Bump version to 3.7.0

Translations update from Weblate

deployment/docker/nginx.conf

@@ -4,7 +4,7 @@ pid /var/run/nginx.pid;
 daemon off;
 
 events {
-	worker_connections 768;
+	worker_connections 4096;
 }
 
 http {
@@ -39,7 +39,7 @@ http {
 	include /etc/nginx/conf.d/*.conf;
 
     server {
-        listen 80 default_server;
+        listen 80 backlog=4096 default_server;
         listen [::]:80 ipv6only=on default_server;
         server_name _;
         index index.php index.html;

doc/admin/installation/docker_smallscale.rst

@@ -182,6 +182,7 @@ named ``/etc/systemd/system/pretix.service`` with the following content::
         -v /var/pretix-data:/data \
         -v /etc/pretix:/etc/pretix \
         -v /var/run/redis:/var/run/redis \
+        --sysctl net.core.somaxconn=4096
         pretix/standalone:stable all
     ExecStop=/usr/bin/docker stop %n
 

doc/api/fundamentals.rst

@@ -170,6 +170,19 @@ Date                  String in ISO 8601 format    ``2017-12-27``
 Multi-lingual string  Object of strings            ``{"en": "red", "de": "rot", "de_Informal": "rot"}``
 Money                 String with decimal number   ``"23.42"``
 Currency              String with ISO 4217 code    ``"EUR"``, ``"USD"``
+Relative datetime     *either* String in ISO 8601  ``"2017-12-27T10:00:00.596934Z"``,
+                      format *or* specification of ``"RELDATE/3/12:00:00/presale_start/"``
+                      a relative datetime,
+                      constructed from a number of
+                      days before the base point,
+                      a time of day, and the base
+                      point.
+Relative date         *either* String in ISO 8601  ``"2017-12-27"``,
+                      format *or* specification of ``"RELDATE/3/-/presale_start/"``
+                      a relative date,
+                      constructed from a number of
+                      days before the base point
+                      and the base point.
 ===================== ============================ ===================================
 
 Query parameters

doc/api/oauth.rst

@@ -61,7 +61,7 @@ access to the API. The ``token`` endpoint expects you to authenticate using `HTT
 ID as a username and your client secret as a password. You are also required to again supply the same ``redirect_uri``
 parameter that you used for the authorization.
 
-.. http:get:: /api/v1/oauth/token
+.. http:post:: /api/v1/oauth/token
 
    Request a new access token
 

doc/api/resources/billing_var.rst

@@ -0,0 +1,148 @@
+pretix Hosted reseller API
+==========================
+
+This API is only accessible to our `value-added reseller partners`_ on pretix Hosted.
+
+.. note:: This API is only accessible with user-level permissions, not with API tokens. Therefore, you will need to
+          create an :ref:`OAuth application <rest-oauth>` and obtain an OAuth access token for a user account that has
+          permission to your reseller account.
+
+Reseller account resource
+-------------------------
+
+The resource contains the following public fields:
+
+.. rst-class:: rest-resource-table
+
+===================================== ========================== =======================================================
+Field                                 Type                       Description
+===================================== ========================== =======================================================
+id                                    integer                    Your reseller ID
+name                                  string                     Internal name of your reseller account
+public_name                           string                     Public name of your reseller account
+public_url                            string                     Public URL of your company
+support_email                         string                     Your support email address
+support_phone                         string                     Your support phone number
+communication_language                string                     Language code we use to communicate with you
+===================================== ========================== =======================================================
+
+
+Endpoints
+---------
+
+.. http:get:: /api/v1/var/
+
+   Returns a list of all reseller accounts you have access to.
+
+   **Example request**:
+
+   .. sourcecode:: http
+
+      GET /api/v1/var/ HTTP/1.1
+      Host: pretix.eu
+      Accept: application/json, text/javascript
+
+   **Example response**:
+
+   .. sourcecode:: http
+
+      HTTP/1.1 200 OK
+      Vary: Accept
+      Content-Type: application/json
+
+      {
+        "count": 1,
+        "next": null,
+        "previous": null,
+        "results": [
+          {
+            "id": 1,
+            "name": "ticketshop.live Ltd & Co. KG",
+            "public_name": "ticketshop.live",
+            "public_url": "https://ticketshop.live",
+            "support_email": "support@ticketshop.live",
+            "support_phone": "+4962213217750",
+            "communication_language": "de"
+          }
+        ]
+      }
+
+   :query integer page: The page number in case of a multi-page result set, default is 1
+   :statuscode 200: no error
+   :statuscode 401: Authentication failure
+
+.. http:get:: /api/v1/var/(id)/
+
+   Returns information on one reseller account, identified by its ID.
+
+   **Example request**:
+
+   .. sourcecode:: http
+
+      GET /api/v1/var/1/ HTTP/1.1
+      Host: pretix.eu
+      Accept: application/json, text/javascript
+
+   **Example response**:
+
+   .. sourcecode:: http
+
+      HTTP/1.1 200 OK
+      Vary: Accept
+      Content-Type: application/json
+
+      {
+        "id": 1,
+        "name": "ticketshop.live Ltd & Co. KG",
+        "public_name": "ticketshop.live",
+        "public_url": "https://ticketshop.live",
+        "support_email": "support@ticketshop.live",
+        "support_phone": "+4962213217750",
+        "communication_language": "de"
+      }
+
+   :param id: The ``id`` field of the reseller account to fetch
+   :statuscode 200: no error
+   :statuscode 401: Authentication failure
+   :statuscode 404: The requested account does not exist **or** you have no permission to view this resource.
+
+.. http:post:: /api/v1/var/(id)/create_organizer/
+
+   Creates a new organizer account that will be associated with a given reseller account.
+
+   **Example request**:
+
+   .. sourcecode:: http
+
+      POST /api/v1/var/1/create_organizer/ HTTP/1.1
+      Host: pretix.eu
+      Accept: application/json, text/javascript
+      Content-Type: application/json
+      Content-Length: 123
+
+      {
+        "name": "My new client",
+        "slug": "New client"
+      }
+
+   **Example response**:
+
+   .. sourcecode:: http
+
+      HTTP/1.1 201 Created
+      Vary: Accept
+      Content-Type: application/json
+
+      {
+        "id": 1,
+        "name": "My new client",
+        "slug": "New client"
+      }
+
+   :param id: The ``id`` field of the reseller account to fetch
+   :statuscode 201: no error
+   :statuscode 400: Invalid request body, usually the slug is invalid or already taken.
+   :statuscode 401: Authentication failure
+   :statuscode 404: The requested account does not exist **or** you have no permission to view this resource.
+
+.. _value-added reseller partners: https://pretix.eu/about/en/var

doc/api/resources/events.rst

@@ -43,6 +43,7 @@ seating_plan                          integer                    If reserved sea
 seat_category_mapping                 object                     An object mapping categories of the seating plan
                                                                  (strings) to items in the event (integers or ``null``).
 timezone                              string                     Event timezone name
+item_meta_properties                  object                     Item-specific meta data parameters and default values.
 ===================================== ========================== =======================================================
 
 
@@ -79,6 +80,10 @@ timezone                              string                     Event timezone
 
    The attribute ``timezone`` has been added.
 
+.. versionchanged:: 3.7
+
+   The attribute ``item_meta_properties`` has been added.
+
 Endpoints
 ---------
 
@@ -133,6 +138,7 @@ Endpoints
             "seating_plan": null,
             "seat_category_mapping": {},
             "timezone": "Europe/Berlin",
+            "item_meta_properties": {},
             "plugins": [
               "pretix.plugins.banktransfer"
               "pretix.plugins.stripe"
@@ -204,6 +210,7 @@ Endpoints
         "seat_category_mapping": {},
         "meta_data": {},
         "timezone": "Europe/Berlin",
+        "item_meta_properties": {},
         "plugins": [
           "pretix.plugins.banktransfer"
           "pretix.plugins.stripe"
@@ -256,6 +263,7 @@ Endpoints
         "has_subevents": false,
         "meta_data": {},
         "timezone": "Europe/Berlin",
+        "item_meta_properties": {},
         "plugins": [
           "pretix.plugins.stripe",
           "pretix.plugins.paypal"
@@ -290,6 +298,7 @@ Endpoints
         "has_subevents": false,
         "meta_data": {},
         "timezone": "Europe/Berlin",
+        "item_meta_properties": {},
         "plugins": [
           "pretix.plugins.stripe",
           "pretix.plugins.paypal"
@@ -344,6 +353,7 @@ Endpoints
         "has_subevents": false,
         "meta_data": {},
         "timezone": "Europe/Berlin",
+        "item_meta_properties": {},
         "plugins": [
           "pretix.plugins.stripe",
           "pretix.plugins.paypal"
@@ -378,6 +388,7 @@ Endpoints
         "seat_category_mapping": {},
         "meta_data": {},
         "timezone": "Europe/Berlin",
+        "item_meta_properties": {},
         "plugins": [
           "pretix.plugins.stripe",
           "pretix.plugins.paypal"
@@ -444,6 +455,7 @@ Endpoints
         "seat_category_mapping": {},
         "meta_data": {},
         "timezone": "Europe/Berlin",
+        "item_meta_properties": {},
         "plugins": [
           "pretix.plugins.banktransfer",
           "pretix.plugins.stripe",
@@ -486,3 +498,123 @@ Endpoints
    :statuscode 204: no error
    :statuscode 401: Authentication failure
    :statuscode 403: The requested organizer/event does not exist **or** you have no permission to delete this resource.
+
+Event settings
+--------------
+
+pretix events have lots and lots of parameters of different types that are stored in a key-value store on our system.
+Since many of these settings depend on each other in complex ways, we can not give direct access to all of these
+settings through the API. However, we do expose many of the simple and useful flags through the API.
+
+Please note that the available settings flags change between pretix versions and also between events, depending on the
+installed plugins, and we do not give a guarantee on backwards-compatibility like with other parts of the API.
+Therefore, we're also not including a list of the options here, but instead recommend to look at the endpoint output
+to see available options. The ``explain=true`` flag enables a verbose mode that provides you with human-readable
+information about the properties.
+
+.. note:: Please note that this is not a complete representation of all event settings. You will find more settings
+          in the web interface.
+
+.. warning:: This API is intended for advanced users. Even though we take care to validate your input, you will be
+             able to break your event using this API by creating situations of conflicting settings. Please take care.
+
+.. versionchanged:: 3.6
+
+   Initial support for settings has been added to the API.
+
+.. http:get:: /api/v1/organizers/(organizer)/events/(event)/settings/
+
+   Get current values of event settings.
+
+   Permission required: "Can change event settings"
+
+   **Example request**:
+
+   .. sourcecode:: http
+
+      GET /api/v1/organizers/bigevents/events/sampleconf/settings/ HTTP/1.1
+      Host: pretix.eu
+      Accept: application/json, text/javascript
+
+   **Example standard response**:
+
+   .. sourcecode:: http
+
+      HTTP/1.1 200 OK
+      Vary: Accept
+      Content-Type: application/json
+
+      {
+        "imprint_url": "https://pretix.eu",
+        …
+      }
+
+   **Example verbose response**:
+
+   .. sourcecode:: http
+
+      HTTP/1.1 200 OK
+      Vary: Accept
+      Content-Type: application/json
+
+      {
+        "imprint_url":
+          {
+            "value": "https://pretix.eu",
+            "label": "Imprint URL",
+            "help_text": "This should point e.g. to a part of your website that has your contact details and legal information."
+          }
+        },
+        …
+      }
+
+   :param organizer: The ``slug`` field of the organizer of the event to access
+   :param event: The ``slug`` field of the event to access
+   :query explain: Set to ``true`` to enable verbose response mode
+   :statuscode 200: no error
+   :statuscode 401: Authentication failure
+   :statuscode 403: The requested organizer/event does not exist **or** you have no permission to view this resource.
+
+.. http:patch:: /api/v1/organizers/(organizer)/events/(event)/settings/
+
+   Updates event settings. Note that ``PUT`` is not allowed here, only ``PATCH``.
+
+    .. warning::
+
+       Settings can be stored at different levels in pretix. If a value is not set on event level, a default setting
+       from a higher level (organizer, global) will be returned. If you explicitly set a setting on event level, it
+       will no longer be inherited from the higher levels. Therefore, we recommend you to send only settings that you
+       explicitly want to set on event level. To unset a settings, pass ``null``.
+
+   **Example request**:
+
+   .. sourcecode:: http
+
+      PATCH /api/v1/organizers/bigevents/events/sampleconf/settings/ HTTP/1.1
+      Host: pretix.eu
+      Accept: application/json, text/javascript
+      Content-Type: application/json
+
+      {
+        "imprint_url": "https://example.org/imprint/"
+      }
+
+   **Example response**:
+
+   .. sourcecode:: http
+
+      HTTP/1.1 200 OK
+      Vary: Accept
+      Content-Type: application/json
+
+      {
+        "imprint_url": "https://example.org/imprint/",
+        …
+      }
+
+   :param organizer: The ``slug`` field of the organizer of the event to update
+   :param event: The ``slug`` field of the event to update
+   :statuscode 200: no error
+   :statuscode 400: The event could not be updated due to invalid submitted data.
+   :statuscode 401: Authentication failure
+   :statuscode 403: The requested organizer/event does not exist **or** you have no permission to create this resource.

doc/api/resources/giftcards.rst

@@ -59,6 +59,9 @@ Endpoints
       }
 
    :query integer page: The page number in case of a multi-page result set, default is 1
+   :query string secret: Only show gift cards with the given secret.
+   :query boolean testmode: Filter for gift cards that are (not) in test mode.
+   :query boolean include_accepted: Also show gift cards issued by other organizers that are accepted by this organizer.
    :param organizer: The ``slug`` field of the organizer to fetch
    :statuscode 200: no error
    :statuscode 401: Authentication failure
@@ -94,6 +97,7 @@ Endpoints
 
    :param organizer: The ``slug`` field of the organizer to fetch
    :param id: The ``id`` field of the gift card to fetch
+   :query boolean include_accepted: Also show gift cards issued by other organizers that are accepted by this organizer.
    :statuscode 200: no error
    :statuscode 401: Authentication failure
    :statuscode 403: The requested organizer does not exist **or** you have no permission to view this resource.
@@ -227,6 +231,7 @@ Endpoints
 
    :param organizer: The ``slug`` field of the organizer to modify
    :param id: The ``id`` field of the gift card to modify
+   :query boolean include_accepted: Also show gift cards issued by other organizers that are accepted by this organizer.
    :statuscode 200: no error
    :statuscode 400: The gift card could not be modified due to invalid submitted data
    :statuscode 401: Authentication failure

doc/api/resources/index.rst

@@ -23,6 +23,8 @@ Resources and endpoints
    waitinglist
    giftcards
    carts
+   teams
    webhooks
    seatingplans
    billing_invoices
+   billing_var

doc/api/resources/items.rst

@@ -114,6 +114,7 @@ bundles                               list of objects            Definition of b
 └ designated_price                    money (string)             Designated price of the bundled product. This will be
                                                                  used to split the price of the base item e.g. for mixed
                                                                  taxation. This is not added to the price.
+meta_data                             object                     Values set for event-specific meta data parameters.
 ===================================== ========================== =======================================================
 
 .. versionchanged:: 2.7
@@ -154,6 +155,10 @@ bundles                               list of objects            Definition of b
 
    The ``show_quota_left``, ``allow_waitinglist``, and ``hidden_if_available`` attributes have been added.
 
+.. versionchanged:: 3.7
+
+   The attribute ``meta_data`` has been added.
+
 Notes
 -----
 
@@ -208,6 +213,7 @@ Endpoints
             "tax_rule": 1,
             "admission": false,
             "issue_giftcard": false,
+            "meta_data": {},
             "position": 0,
             "picture": null,
             "available_from": null,
@@ -303,6 +309,7 @@ Endpoints
         "tax_rule": 1,
         "admission": false,
         "issue_giftcard": false,
+        "meta_data": {},
         "position": 0,
         "picture": null,
         "available_from": null,
@@ -379,6 +386,7 @@ Endpoints
         "tax_rule": 1,
         "admission": false,
         "issue_giftcard": false,
+        "meta_data": {},
         "position": 0,
         "picture": null,
         "available_from": null,
@@ -442,6 +450,7 @@ Endpoints
         "tax_rule": 1,
         "admission": false,
         "issue_giftcard": false,
+        "meta_data": {},
         "position": 0,
         "picture": null,
         "available_from": null,
@@ -537,6 +546,7 @@ Endpoints
         "tax_rule": 1,
         "admission": false,
         "issue_giftcard": false,
+        "meta_data": {},
         "position": 0,
         "picture": null,
         "available_from": null,

doc/api/resources/orders.rst

@@ -891,6 +891,13 @@ Creating orders
    IDs in the ``addon_to`` field of another position. Note that all add_ons for a specific position need to come
    immediately after the position itself.
 
+   Starting with pretix 3.7, you can add ``"simulate": true`` to the body to do a "dry run" of your order. This will
+   validate your order and return you an order object with the resulting prices, but will not create an actual order.
+   You can use this for testing or to look up prices. In this case, some attributes are ignored, such as whether
+   to send an email or what payment provider will be used. Note that some returned fields will contain empty values
+   (e.g. all ``id`` fields of positions will be zero) and some will contain fake values (e.g. the order code will
+   always be ``PREVIEW``). pretix plugins will not be triggered, so some special behavior might be missing as well.
+
    **Example request**:
 
    .. sourcecode:: http
@@ -1621,6 +1628,10 @@ Order payment endpoints
 
   These endpoints have been added.
 
+.. versionchanged:: 3.6
+
+   Payments can now be created through the API.
+
 .. http:get:: /api/v1/organizers/(organizer)/events/(event)/orders/(code)/payments/
 
    Returns a list of all payments for an order.
@@ -1829,6 +1840,61 @@ Order payment endpoints
    :statuscode 403: The requested organizer/event does not exist **or** you have no permission to view this resource.
    :statuscode 404: The requested order or payment does not exist.
 
+.. http:post:: /api/v1/organizers/(organizer)/events/(event)/orders/(code)/payments/
+
+   Creates a new payment.
+
+   Be careful with the ``info`` parameter: You can pass a nested JSON object that will be set as the internal ``info``
+   value of the payment object that will be created. How this value is handled is up to the payment provider and you
+   should only use this if you know the specific payment provider in detail. Please keep in mind that the payment
+   provider will not be called to do anything about this (i.e. if you pass a bank account to a debit provider, *no*
+   charge will be created), this is just informative in case you *handled the payment already*.
+
+   **Example request**:
+
+   .. sourcecode:: http
+
+      POST /api/v1/organizers/bigevents/events/sampleconf/orders/ABC12/payments/ HTTP/1.1
+      Host: pretix.eu
+      Accept: application/json, text/javascript
+      Content-Type: application/json
+
+      {
+        "state": "confirmed",
+        "amount": "23.00",
+        "payment_date": "2017-12-04T12:13:12Z",
+        "info": {},
+        "provider": "banktransfer"
+      }
+
+
+   **Example response**:
+
+   .. sourcecode:: http
+
+      HTTP/1.1 201 Created
+      Vary: Accept
+      Content-Type: application/json
+
+      {
+        "local_id": 1,
+        "state": "confirmed",
+        "amount": "23.00",
+        "created": "2017-12-01T10:00:00Z",
+        "payment_date": "2017-12-04T12:13:12Z",
+        "payment_url": null,
+        "details": {},
+        "provider": "banktransfer"
+      }
+
+   :param organizer: The ``slug`` field of the organizer to access
+   :param event: The ``slug`` field of the event to access
+   :param order: The ``code`` field of the order to access
+   :statuscode 201: no error
+   :statuscode 401: Authentication failure
+   :statuscode 403: The requested organizer/event does not exist **or** you have no permission to view this resource.
+   :statuscode 404: The requested order does not exist.
+
 
 Order refund endpoints
 ----------------------
@@ -1947,7 +2013,8 @@ Order refund endpoints
         "payment": 1,
         "execution_date": null,
         "provider": "manual",
-        "mark_canceled": false
+        "mark_canceled": false,
+        "mark_pending": true
       }
 
    **Example response**:

doc/api/resources/teams.rst

@@ -0,0 +1,671 @@
+.. spelling:: fullname
+
+.. _`rest-teams`:
+
+Teams
+=====
+
+.. warning:: Unlike our user interface, the team API **does** allow you to lock yourself out by deleting or modifying
+             the team your user or API key belongs to. Be careful around here!
+
+Team resource
+-------------
+
+The team resource contains the following public fields:
+
+.. rst-class:: rest-resource-table
+
+===================================== ========================== =======================================================
+Field                                 Type                       Description
+===================================== ========================== =======================================================
+id                                    integer                    Internal ID of the team
+name                                  string                     Team name
+all_events                            boolean                    Whether this team has access to all events
+limit_events                          list                       List of event slugs this team has access to
+can_create_events                     boolean
+can_change_teams                      boolean
+can_change_organizer_settings         boolean
+can_manage_gift_cards                 boolean
+can_change_event_settings             boolean
+can_change_items                      boolean
+can_view_orders                       boolean
+can_change_orders                     boolean
+can_view_vouchers                     boolean
+can_change_vouchers                   boolean
+===================================== ========================== =======================================================
+
+Team member resource
+--------------------
+
+The team member resource contains the following public fields:
+
+.. rst-class:: rest-resource-table
+
+===================================== ========================== =======================================================
+Field                                 Type                       Description
+===================================== ========================== =======================================================
+id                                    integer                    Internal ID of the user
+email                                 string                     The user's email address
+fullname                              string                     The user's full name (or ``null``)
+require_2fa                           boolean                    Whether this user uses two-factor-authentication
+===================================== ========================== =======================================================
+
+Team invite resource
+--------------------
+
+The team invite resource contains the following public fields:
+
+.. rst-class:: rest-resource-table
+
+===================================== ========================== =======================================================
+Field                                 Type                       Description
+===================================== ========================== =======================================================
+id                                    integer                    Internal ID of the invite
+email                                 string                     The invitee's email address
+===================================== ========================== =======================================================
+
+Team API token resource
+-----------------------
+
+The team API token resource contains the following public fields:
+
+.. rst-class:: rest-resource-table
+
+===================================== ========================== =======================================================
+Field                                 Type                       Description
+===================================== ========================== =======================================================
+id                                    integer                    Internal ID of the invite
+name                                  string                     Name of this API token
+active                                boolean                    Whether this API token is active (can never be set to
+                                                                 ``true`` again once ``false``)
+token                                 string                     The actual API token. Will only be sent back during
+                                                                 token creation.
+===================================== ========================== =======================================================
+
+Team endpoints
+--------------
+
+.. http:get:: /api/v1/organizers/(organizer)/teams/
+
+   Returns a list of all teams within a given organizer.
+
+   **Example request**:
+
+   .. sourcecode:: http
+
+      GET /api/v1/organizers/bigevents/teams/ HTTP/1.1
+      Host: pretix.eu
+      Accept: application/json, text/javascript
+
+   **Example response**:
+
+   .. sourcecode:: http
+
+      HTTP/1.1 200 OK
+      Vary: Accept
+      Content-Type: application/json
+
+      {
+        "count": 1,
+        "next": null,
+        "previous": null,
+        "results": [
+          {
+            "id": 1,
+            "name": "Admin team",
+            "all_events": true,
+            "limit_events": [],
+            "can_create_events": true,
+            ...
+          }
+        ]
+      }
+
+   :query integer page: The page number in case of a multi-page result set, default is 1
+   :param organizer: The ``slug`` field of the organizer to fetch
+   :statuscode 200: no error
+   :statuscode 401: Authentication failure
+   :statuscode 403: The requested organizer does not exist **or** you have no permission to view this resource.
+
+.. http:get:: /api/v1/organizers/(organizer)/teams/(id)/
+
+   Returns information on one team, identified by its ID.
+
+   **Example request**:
+
+   .. sourcecode:: http
+
+      GET /api/v1/organizers/bigevents/teams/1/ HTTP/1.1
+      Host: pretix.eu
+      Accept: application/json, text/javascript
+
+   **Example response**:
+
+   .. sourcecode:: http
+
+      HTTP/1.1 200 OK
+      Vary: Accept
+      Content-Type: application/json
+
+      {
+        "id": 1,
+        "name": "Admin team",
+        "all_events": true,
+        "limit_events": [],
+        "can_create_events": true,
+        ...
+      }
+
+   :param organizer: The ``slug`` field of the organizer to fetch
+   :param id: The ``id`` field of the team to fetch
+   :statuscode 200: no error
+   :statuscode 401: Authentication failure
+   :statuscode 403: The requested organizer does not exist **or** you have no permission to view this resource.
+
+.. http:post:: /api/v1/organizers/(organizer)/teams/
+
+   Creates a new team
+
+   **Example request**:
+
+   .. sourcecode:: http
+
+      POST /api/v1/organizers/bigevents/teams/ HTTP/1.1
+      Host: pretix.eu
+      Accept: application/json, text/javascript
+      Content-Type: application/json
+
+      {
+        "name": "Admin team",
+        "all_events": true,
+        "limit_events": [],
+        "can_create_events": true,
+        ...
+      }
+
+   **Example response**:
+
+   .. sourcecode:: http
+
+      HTTP/1.1 201 Created
+      Vary: Accept
+      Content-Type: application/json
+
+      {
+        "id": 2,
+        "name": "Admin team",
+        "all_events": true,
+        "limit_events": [],
+        "can_create_events": true,
+        ...
+      }
+
+   :param organizer: The ``slug`` field of the organizer to create a team for
+   :statuscode 201: no error
+   :statuscode 400: The team could not be created due to invalid submitted data.
+   :statuscode 401: Authentication failure
+   :statuscode 403: The requested organizer does not exist **or** you have no permission to create this resource.
+
+.. http:patch:: /api/v1/organizers/(organizer)/teams/(id)/
+
+   Update a team. You can also use ``PUT`` instead of ``PATCH``. With ``PUT``, you have to provide all fields of
+   the resource, other fields will be reset to default. With ``PATCH``, you only need to provide the fields that you
+   want to change.
+
+   **Example request**:
+
+   .. sourcecode:: http
+
+      PATCH /api/v1/organizers/bigevents/teams/1/ HTTP/1.1
+      Host: pretix.eu
+      Accept: application/json, text/javascript
+      Content-Type: application/json
+      Content-Length: 94
+
+      {
+        "can_create_events": true
+      }
+
+   **Example response**:
+
+   .. sourcecode:: http
+
+      HTTP/1.1 200 OK
+      Vary: Accept
+      Content-Type: application/json
+
+      {
+        "id": 1,
+        "name": "Admin team",
+        "all_events": true,
+        "limit_events": [],
+        "can_create_events": true,
+        ...
+      }
+
+   :param organizer: The ``slug`` field of the organizer to modify
+   :param id: The ``id`` field of the team to modify
+   :statuscode 200: no error
+   :statuscode 400: The team could not be modified due to invalid submitted data
+   :statuscode 401: Authentication failure
+   :statuscode 403: The requested organizer does not exist **or** you have no permission to change this resource.
+
+.. http:delete:: /api/v1/organizers/(organizer)/teams/(id)/
+
+   Deletes a team.
+
+   **Example request**:
+
+   .. sourcecode:: http
+
+      DELETE /api/v1/organizers/bigevents/teams/1/ HTTP/1.1
+      Host: pretix.eu
+      Accept: application/json, text/javascript
+
+   **Example response**:
+
+   .. sourcecode:: http
+
+      HTTP/1.1 204 No Content
+
+   :param organizer: The ``slug`` field of the organizer to modify
+   :param id: The ``id`` field of the team to delete
+   :statuscode 204: no error
+   :statuscode 401: Authentication failure
+   :statuscode 403: The requested organizer does not exist **or** you have no permission to change this resource.
+
+Team member endpoints
+---------------------
+
+.. http:get:: /api/v1/organizers/(organizer)/teams/(team)/members/
+
+   Returns a list of all members of a team.
+
+   **Example request**:
+
+   .. sourcecode:: http
+
+      GET /api/v1/organizers/bigevents/teams/1/members/ HTTP/1.1
+      Host: pretix.eu
+      Accept: application/json, text/javascript
+
+   **Example response**:
+
+   .. sourcecode:: http
+
+      HTTP/1.1 200 OK
+      Vary: Accept
+      Content-Type: application/json
+
+      {
+        "count": 1,
+        "next": null,
+        "previous": null,
+        "results": [
+          {
+            "id": 1,
+            "fullname": "John Doe",
+            "email": "john@example.com",
+            "require_2fa": true
+          }
+        ]
+      }
+
+   :query integer page: The page number in case of a multi-page result set, default is 1
+   :param organizer: The ``slug`` field of the organizer to fetch
+   :param team: The ``id`` field of the team to fetch
+   :statuscode 200: no error
+   :statuscode 401: Authentication failure
+   :statuscode 403: The requested organizer does not exist **or** you have no permission to view this resource.
+   :statuscode 404: The requested team does not exist
+
+.. http:get:: /api/v1/organizers/(organizer)/teams/(team)/members/(id)/
+
+   Returns information on one team member, identified by their ID.
+
+   **Example request**:
+
+   .. sourcecode:: http
+
+      GET /api/v1/organizers/bigevents/teams/1/members/1/ HTTP/1.1
+      Host: pretix.eu
+      Accept: application/json, text/javascript
+
+   **Example response**:
+
+   .. sourcecode:: http
+
+      HTTP/1.1 200 OK
+      Vary: Accept
+      Content-Type: application/json
+
+      {
+        "id": 1,
+        "fullname": "John Doe",
+        "email": "john@example.com",
+        "require_2fa": true
+      }
+
+   :param organizer: The ``slug`` field of the organizer to fetch
+   :param team: The ``id`` field of the team to fetch
+   :param id: The ``id`` field of the member to fetch
+   :statuscode 200: no error
+   :statuscode 401: Authentication failure
+   :statuscode 403: The requested organizer does not exist **or** you have no permission to view this resource.
+   :statuscode 404: The requested team or member does not exist
+
+.. http:delete:: /api/v1/organizers/(organizer)/teams/(team)/members/(id)/
+
+   Removes a member from the team.
+
+   **Example request**:
+
+   .. sourcecode:: http
+
+      DELETE /api/v1/organizers/bigevents/teams/1/members/1/ HTTP/1.1
+      Host: pretix.eu
+
+   **Example response**:
+
+   .. sourcecode:: http
+
+      HTTP/1.1 204 No Content
+
+   :param organizer: The ``slug`` field of the organizer to modify
+   :param team: The ``id`` field of the team to modify
+   :param id: The ``id`` field of the member to delete
+   :statuscode 204: no error
+   :statuscode 401: Authentication failure
+   :statuscode 403: The requested organizer does not exist **or** you have no permission to create this resource.
+   :statuscode 404: The requested team or member does not exist
+
+Team invite endpoints
+---------------------
+
+.. http:get:: /api/v1/organizers/(organizer)/teams/(team)/invites/
+
+   Returns a list of all invitations to a team.
+
+   **Example request**:
+
+   .. sourcecode:: http
+
+      GET /api/v1/organizers/bigevents/teams/1/invites/ HTTP/1.1
+      Host: pretix.eu
+      Accept: application/json, text/javascript
+
+   **Example response**:
+
+   .. sourcecode:: http
+
+      HTTP/1.1 200 OK
+      Vary: Accept
+      Content-Type: application/json
+
+      {
+        "count": 1,
+        "next": null,
+        "previous": null,
+        "results": [
+          {
+            "id": 1,
+            "email": "john@example.com"
+          }
+        ]
+      }
+
+   :query integer page: The page number in case of a multi-page result set, default is 1
+   :param organizer: The ``slug`` field of the organizer to fetch
+   :param team: The ``id`` field of the team to fetch
+   :statuscode 200: no error
+   :statuscode 401: Authentication failure
+   :statuscode 403: The requested organizer does not exist **or** you have no permission to view this resource.
+   :statuscode 404: The requested team does not exist
+
+.. http:get:: /api/v1/organizers/(organizer)/teams/(team)/invites/(id)/
+
+   Returns information on one invite, identified by its ID.
+
+   **Example request**:
+
+   .. sourcecode:: http
+
+      GET /api/v1/organizers/bigevents/teams/1/invites/1/ HTTP/1.1
+      Host: pretix.eu
+      Accept: application/json, text/javascript
+
+   **Example response**:
+
+   .. sourcecode:: http
+
+      HTTP/1.1 200 OK
+      Vary: Accept
+      Content-Type: application/json
+
+      {
+        "id": 1,
+        "email": "john@example.org"
+      }
+
+   :param organizer: The ``slug`` field of the organizer to fetch
+   :param team: The ``id`` field of the team to fetch
+   :param id: The ``id`` field of the invite to fetch
+   :statuscode 200: no error
+   :statuscode 401: Authentication failure
+   :statuscode 403: The requested organizer does not exist **or** you have no permission to view this resource.
+   :statuscode 404: The requested team or invite does not exist
+
+.. http:post:: /api/v1/organizers/(organizer)/teams/(team)/invites/
+
+   Invites someone into the team. Note that if the user already has a pretix account, you will receive a response without
+   an ``id`` and instead of an invite being created, the user will be directly added to the team.
+
+   **Example request**:
+
+   .. sourcecode:: http
+
+      POST /api/v1/organizers/bigevents/teams/1/invites/ HTTP/1.1
+      Host: pretix.eu
+      Accept: application/json, text/javascript
+      Content-Type: application/json
+      Content-Length: 94
+
+      {
+        "email": "mark@example.org"
+      }
+
+   **Example response**:
+
+   .. sourcecode:: http
+
+      HTTP/1.1 201 Created
+      Vary: Accept
+      Content-Type: application/json
+
+      {
+        "id": 1,
+        "email": "mark@example.org"
+      }
+
+   :param organizer: The ``slug`` field of the organizer to modify
+   :param team: The ``id`` field of the team to modify
+   :statuscode 204: no error
+   :statuscode 401: Authentication failure
+   :statuscode 403: The requested organizer does not exist **or** you have no permission to create this resource.
+   :statuscode 404: The requested team does not exist
+
+.. http:delete:: /api/v1/organizers/(organizer)/teams/(team)/invites/(id)/
+
+   Revokes an invite.
+
+   **Example request**:
+
+   .. sourcecode:: http
+
+      DELETE /api/v1/organizers/bigevents/teams/1/invites/1/ HTTP/1.1
+      Host: pretix.eu
+
+   **Example response**:
+
+   .. sourcecode:: http
+
+      HTTP/1.1 204 No Content
+
+   :param organizer: The ``slug`` field of the organizer to modify
+   :param team: The ``id`` field of the team to modify
+   :param id: The ``id`` field of the invite to delete
+   :statuscode 204: no error
+   :statuscode 401: Authentication failure
+   :statuscode 403: The requested organizer does not exist **or** you have no permission to create this resource.
+   :statuscode 404: The requested team or invite does not exist
+
+Team API token endpoints
+------------------------
+
+.. http:get:: /api/v1/organizers/(organizer)/teams/(team)/tokens/
+
+   Returns a list of all API tokens of a team.
+
+   **Example request**:
+
+   .. sourcecode:: http
+
+      GET /api/v1/organizers/bigevents/teams/1/tokens/ HTTP/1.1
+      Host: pretix.eu
+      Accept: application/json, text/javascript
+
+   **Example response**:
+
+   .. sourcecode:: http
+
+      HTTP/1.1 200 OK
+      Vary: Accept
+      Content-Type: application/json
+
+      {
+        "count": 1,
+        "next": null,
+        "previous": null,
+        "results": [
+          {
+            "id": 1,
+            "active": true,
+            "name": "Test token"
+          }
+        ]
+      }
+
+   :query integer page: The page number in case of a multi-page result set, default is 1
+   :param organizer: The ``slug`` field of the organizer to fetch
+   :param team: The ``id`` field of the team to fetch
+   :statuscode 200: no error
+   :statuscode 401: Authentication failure
+   :statuscode 403: The requested organizer does not exist **or** you have no permission to view this resource.
+   :statuscode 404: The requested team does not exist
+
+.. http:get:: /api/v1/organizers/(organizer)/teams/(team)/tokens/(id)/
+
+   Returns information on one token, identified by its ID.
+
+   **Example request**:
+
+   .. sourcecode:: http
+
+      GET /api/v1/organizers/bigevents/teams/1/tokens/1/ HTTP/1.1
+      Host: pretix.eu
+      Accept: application/json, text/javascript
+
+   **Example response**:
+
+   .. sourcecode:: http
+
+      HTTP/1.1 200 OK
+      Vary: Accept
+      Content-Type: application/json
+
+      {
+        "id": 1,
+        "active": true,
+        "name": "Test token"
+      }
+
+   :param organizer: The ``slug`` field of the organizer to fetch
+   :param team: The ``id`` field of the team to fetch
+   :param id: The ``id`` field of the token to fetch
+   :statuscode 200: no error
+   :statuscode 401: Authentication failure
+   :statuscode 403: The requested organizer does not exist **or** you have no permission to view this resource.
+   :statuscode 404: The requested team or token does not exist
+
+.. http:post:: /api/v1/organizers/(organizer)/teams/(team)/tokens/
+
+   Creates a new token.
+
+   **Example request**:
+
+   .. sourcecode:: http
+
+      POST /api/v1/organizers/bigevents/teams/1/tokens/ HTTP/1.1
+      Host: pretix.eu
+      Accept: application/json, text/javascript
+      Content-Type: application/json
+      Content-Length: 94
+
+      {
+        "name": "New token"
+      }
+
+   **Example response**:
+
+   .. sourcecode:: http
+
+      HTTP/1.1 201 Created
+      Vary: Accept
+      Content-Type: application/json
+
+      {
+        "id": 2,
+        "name": "New token",
+        "active": true,
+        "token": "",
+      }
+
+   :param organizer: The ``slug`` field of the organizer to modify
+   :param team: The ``id`` field of the team to create a token for
+   :statuscode 204: no error
+   :statuscode 401: Authentication failure
+   :statuscode 403: The requested organizer does not exist **or** you have no permission to create this resource.
+   :statuscode 404: The requested team does not exist
+
+.. http:delete:: /api/v1/organizers/(organizer)/teams/(team)/tokens/(id)/
+
+   Disables a token.
+
+   **Example request**:
+
+   .. sourcecode:: http
+
+      DELETE /api/v1/organizers/bigevents/teams/1/tokens/1/ HTTP/1.1
+      Host: pretix.eu
+
+   **Example response**:
+
+   .. sourcecode:: http
+
+      HTTP/1.1 200 OK
+      Vary: Accept
+      Content-Type: application/json
+
+      {
+        "id": 1,
+        "name": "My token",
+        "active": false
+      }
+
+   :param organizer: The ``slug`` field of the organizer to modify
+   :param team: The ``id`` field of the team to modify
+   :param id: The ``id`` field of the token to delete
+   :statuscode 200: no error
+   :statuscode 401: Authentication failure
+   :statuscode 403: The requested organizer does not exist **or** you have no permission to create this resource.
+   :statuscode 404: The requested team or token does not exist

doc/development/api/general.rst

@@ -22,6 +22,13 @@ There are multiple signals that will be sent out in the ordering cycle:
 .. automodule:: pretix.base.signals
    :members: validate_cart, validate_cart_addons, validate_order, order_fee_calculation, order_paid, order_placed, order_canceled, order_expired, order_modified, order_changed, order_approved, order_denied, order_fee_type_name, allow_ticket_download, order_split, order_gracefully_delete, invoice_line_text
 
+Check-ins
+"""""""""
+
+.. automodule:: pretix.base.signals
+   :members: checkin_created
+
+
 Frontend
 --------
 
@@ -81,3 +88,9 @@ Ticket designs
 
 .. automodule:: pretix.plugins.ticketoutputpdf.signals
    :members: override_layout
+
+API
+---
+
+.. automodule:: pretix.base.signals
+   :members: validate_event_settings, api_event_settings_fields

doc/development/api/payment.rst

@@ -114,6 +114,8 @@ The provider class
 
    .. automethod:: api_payment_details
 
+   .. automethod:: matching_id
+
    .. automethod:: shred_payment_info
 
    .. automethod:: cancel_payment

doc/development/api/plugins.rst

@@ -46,6 +46,9 @@ name               string               The human-readable name of your plugin
 author             string               Your name
 version            string               A human-readable version code of your plugin
 description        string               A more verbose description of what your plugin does.
+category           string               Category of a plugin. Either one of ``"FEATURE"``, ``"PAYMENT"``,
+                                        ``"INTEGRATION"``, ``"CUSTOMIZATION"``, ``"FORMAT"``, or ``"API"``,
+                                        or any other string.
 visible            boolean (optional)   ``True`` by default, can hide a plugin so it cannot be normally activated.
 restricted         boolean (optional)   ``False`` by default, restricts a plugin such that it can only be enabled
                                         for an event by system administrators / superusers.
@@ -69,6 +72,7 @@ A working example would be::
             name = _("PayPal")
             author = _("the pretix team")
             version = '1.0.0'
+            category = 'PAYMENT
             visible = True
             restricted = False
             description = _("This plugin allows you to receive payments via PayPal")

doc/plugins/campaigns.rst

@@ -0,0 +1,224 @@
+Campaigns
+=========
+
+The campaigns plugin provides a HTTP API that allows you to create new campaigns.
+
+Resource description
+--------------------
+
+The campaign resource contains the following public fields:
+
+.. rst-class:: rest-resource-table
+
+===================================== ========================== =======================================================
+Field                                 Type                       Description
+===================================== ========================== =======================================================
+id                                    integer                    Internal campaign ID
+code                                  string                     The URL component of the campaign, e.g. with code ``BAR``
+                                                                 the campaign URL would to be ``https://<server>/<organizer>/<event>/c/BAR/``.
+                                                                 This value needs to be *globally unique* and we do not
+                                                                 recommend setting it manually. If you omit it, a random
+                                                                 value will be chosen.
+description                           string                     An internal, human-readable name of the campaign.
+external_target                       string                     An URL to redirect to from the tracking link. To redirect to
+                                                                 the ticket shop, use an empty string.
+order_count                           integer                    Number of orders tracked on this campaign (read-only)
+click_count                           integer                    Number of clicks tracked on this campaign (read-only)
+===================================== ========================== =======================================================
+
+Endpoints
+---------
+
+.. http:get:: /api/v1/organizers/(organizer)/events/(event)/campaigns/
+
+   Returns a list of all campaigns configured for an event.
+
+   **Example request**:
+
+   .. sourcecode:: http
+
+      GET /api/v1/organizers/bigevents/events/sampleconf/campaigns/ HTTP/1.1
+      Host: pretix.eu
+      Accept: application/json, text/javascript
+
+   **Example response**:
+
+   .. sourcecode:: http
+
+      HTTP/1.1 200 OK
+      Vary: Accept
+      Content-Type: application/json
+
+      {
+        "count": 1,
+        "next": null,
+        "previous": null,
+        "results": [
+          {
+            "id": 1,
+            "code": "wZnL11fjq",
+            "description": "Facebook",
+            "external_target": "",
+            "order_count:" 0,
+            "click_count:" 0
+          }
+        ]
+      }
+
+   :query page: The page number in case of a multi-page result set, default is 1
+   :param organizer: The ``slug`` field of a valid organizer
+   :param event: The ``slug`` field of the event to fetch
+   :statuscode 200: no error
+   :statuscode 401: Authentication failure
+   :statuscode 403: The requested organizer or event does not exist **or** you have no permission to view it.
+
+.. http:get:: /api/v1/organizers/(organizer)/events/(event)/campaigns/(id)/
+
+   Returns information on one campaign, identified by its ID.
+
+   **Example request**:
+
+   .. sourcecode:: http
+
+      GET /api/v1/organizers/bigevents/events/sampleconf/campaigns/1/ HTTP/1.1
+      Host: pretix.eu
+      Accept: application/json, text/javascript
+
+   **Example response**:
+
+   .. sourcecode:: http
+
+      HTTP/1.1 200 OK
+      Vary: Accept
+      Content-Type: application/json
+
+      {
+        "id": 1,
+        "code": "wZnL11fjq",
+        "description": "Facebook",
+        "external_target": "",
+        "order_count:" 0,
+        "click_count:" 0
+      }
+
+   :param organizer: The ``slug`` field of the organizer to fetch
+   :param event: The ``slug`` field of the event to fetch
+   :param id: The ``id`` field of the campaign to fetch
+   :statuscode 200: no error
+   :statuscode 401: Authentication failure
+   :statuscode 403: The requested organizer/event/campaign does not exist **or** you have no permission to view it.
+
+.. http:post:: /api/v1/organizers/(organizer)/events/(event)/campaigns/
+
+   Create a new campaign.
+
+   **Example request**:
+
+   .. sourcecode:: http
+
+      POST /api/v1/organizers/bigevents/events/sampleconf/campaigns/ HTTP/1.1
+      Host: pretix.eu
+      Accept: application/json, text/javascript
+      Content-Type: application/json
+      Content-Length: 166
+
+      {
+        "description": "Twitter"
+      }
+
+   **Example response**:
+
+   .. sourcecode:: http
+
+      HTTP/1.1 201 Created
+      Vary: Accept
+      Content-Type: application/json
+
+      {
+        "id": 2,
+        "code": "IfVJQzSBL",
+        "description": "Twitter",
+        "external_target": "",
+        "order_count:" 0,
+        "click_count:" 0
+      }
+
+   :param organizer: The ``slug`` field of the organizer to create a campaign for
+   :param event: The ``slug`` field of the event to create a campaign for
+   :statuscode 201: no error
+   :statuscode 400: The campaign could not be created due to invalid submitted data.
+   :statuscode 401: Authentication failure
+   :statuscode 403: The requested organizer/event does not exist **or** you have no permission to create campaigns.
+
+
+.. http:patch:: /api/v1/organizers/(organizer)/events/(event)/campaigns/(id)/
+
+   Update a campaign. You can also use ``PUT`` instead of ``PATCH``. With ``PUT``, you have to provide all fields of
+   the resource, other fields will be reset to default. With ``PATCH``, you only need to provide the fields that you
+   want to change.
+
+   **Example request**:
+
+   .. sourcecode:: http
+
+      PATCH /api/v1/organizers/bigevents/events/sampleconf/campaigns/1/ HTTP/1.1
+      Host: pretix.eu
+      Accept: application/json, text/javascript
+      Content-Type: application/json
+      Content-Length: 34
+
+      {
+        "external_target": "https://mywebsite.com"
+      }
+
+   **Example response**:
+
+   .. sourcecode:: http
+
+      HTTP/1.1 200 OK
+      Vary: Accept
+      Content-Type: text/javascript
+
+      {
+        "id": 2,
+        "code": "IfVJQzSBL",
+        "description": "Twitter",
+        "external_target": "https://mywebsite.com",
+        "order_count:" 0,
+        "click_count:" 0
+      }
+
+   :param organizer: The ``slug`` field of the organizer to modify
+   :param event: The ``slug`` field of the event to modify
+   :param id: The ``id`` field of the campaign to modify
+   :statuscode 200: no error
+   :statuscode 400: The campaign could not be modified due to invalid submitted data.
+   :statuscode 401: Authentication failure
+   :statuscode 403: The requested organizer/event/campaign does not exist **or** you have no permission to change it.
+
+
+.. http:delete:: /api/v1/organizers/(organizer)/events/(event)/campaigns/(id)/
+
+   Delete a campaign and all associated data.
+
+   **Example request**:
+
+   .. sourcecode:: http
+
+      DELETE /api/v1/organizers/bigevents/events/sampleconf/campaigns/1/ HTTP/1.1
+      Host: pretix.eu
+      Accept: application/json, text/javascript
+
+   **Example response**:
+
+   .. sourcecode:: http
+
+      HTTP/1.1 204 No Content
+      Vary: Accept
+
+   :param organizer: The ``slug`` field of the organizer to modify
+   :param event: The ``slug`` field of the event to modify
+   :param id: The ``id`` field of the campaign to delete
+   :statuscode 204: no error
+   :statuscode 401: Authentication failure
+   :statuscode 403: The requested organizer/event/campaign does not exist **or** you have no permission to change it

doc/plugins/index.rst

@@ -14,3 +14,4 @@ If you want to **create** a plugin, please go to the
    banktransfer
    ticketoutputpdf
    badges
+   campaigns

doc/requirements.txt

@@ -1,8 +1,9 @@
 -r ../src/requirements.txt
-sphinx==1.6.*
+sphinx==2.3.*
 sphinx-rtd-theme
 sphinxcontrib-httpdomain
 sphinxcontrib-images
 sphinxcontrib-spelling
+pygments-markdown-lexer
 # See https://github.com/rfk/pyenchant/pull/130
 git+https://github.com/raphaelm/pyenchant.git@patch-1#egg=pyenchant

doc/spelling_wordlist.txt

@@ -103,6 +103,7 @@ regex
 renderer
 renderers
 reportlab
+reseller
 SaaS
 scalability
 screenshot
@@ -110,9 +111,10 @@ scss
 searchable
 selectable
 serializable
-serializers
+serializer
 serializers
 sexualized
+SQL
 startup
 stdout
 stylesheet
@@ -139,6 +141,7 @@ untrusted
 uptime
 username
 url
+validator
 versa
 versioning
 viewable

doc/user/events/widget.rst

@@ -114,6 +114,17 @@ If you want to disable voucher input in the widget, you can pass the ``disable-v
 
    <pretix-widget event="https://pretix.eu/demo/democon/" disable-vouchers></pretix-widget>
 
+Filtering products
+------------------
+
+You can filter the products shown in the widget by passing in a list of product IDs::
+
+   <pretix-widget event="https://pretix.eu/demo/democon/" items="23,42"></pretix-widget>
+
+Alternatively, you can select one or more categories to be shown::
+
+   <pretix-widget event="https://pretix.eu/demo/democon/" categories="12,25"></pretix-widget>
+
 Multi-event selection
 ---------------------
 
@@ -183,6 +194,24 @@ Just as the widget, the button supports the optional attributes ``voucher`` and
 
 You can style the button using the ``pretix-button`` CSS class.
 
+Dynamically opening the widget
+------------------------------
+
+You can get the behavior of the pretix Button without a button at all, so you can trigger it from your own code in
+response to a user action. Usually, this will open an overlay with your ticket shop, however in some cases, such as
+missing HTTPS encryption on your case or a really small screen (mobile), it will open a new tab instead of an overlay.
+Therefore, make sure you call this *in direct response to a user action*, otherwise most browser will block it as an
+unwanted pop-up.
+
+.. js:function:: window.PretixWidget.open(target_url [, voucher [, subevent [, items, [, widget_data [, skip_ssl_check ]]]]])
+
+   :param string target_url: The URL of the ticket shop.
+   :param string voucher: A voucher code to be pre-selected, or ``null``.
+   :param string subevent: A subevent to be pre-selected, or ``null``.
+   :param array items: A collection of items to be put in the cart, of the form ``[{"item": "item_3", "count": 1}, {"item": "variation_5_6", "count": 4}]``
+   :param object widget_data: Additional data to be passed to the shop, see below.
+   :param boolean skip_ssl_check: Whether to ignore the check for HTTPS. Only to be used during development.
+
 Dynamically loading the widget
 ------------------------------
 
@@ -238,7 +267,8 @@ with that information::
         data-question-L9G8NG9M="Foobar">
     </pretix-widget>
 
-This works for the pretix Button as well. Currently, the following attributes are understood by pretix itself:
+This works for the pretix Button as well, if you also specify a product.
+Currently, the following attributes are understood by pretix itself:
 
 * ``data-email`` will pre-fill the order email field as well as the attendee email field (if enabled).
 
@@ -303,4 +333,8 @@ Hosted or pretix Enterprise are active, you can pass the following fields:
    Data passing options have been added in pretix 2.3. If you use a self-hosted version of pretix, they only work
    fully if you configured a redis server.
 
+.. versionchanged:: 3.6
+
+   Dynamically opening the widget has been added in pretix 3.6.
+
 .. _Let's Encrypt: https://letsencrypt.org/

doc/user/faq.rst

@@ -40,6 +40,24 @@ If you created a product and it doesn't show up, please follow the following ste
 6. If the sale period has not started yet or is already over, check the "Show items outside presale period" setting of
    your event.
 
+Can I have different payment deadlines for different payment methods?
+---------------------------------------------------------------------
+
+No. We do not think it makes a lot of sense, for a number of reasons. First of all we believe it is not very
+customer-friendly. You might for example want to configure a 1-day deadline for credit card payments and 2 weeks for
+bank transfers. However, think for example of a customer who wants to pay by card and then the payment fails because
+the bank locked the card or refused the payment. The customer now needs to worry about not getting their ticket, or
+needs to create a new order with a different payment method. A payment deadline is a guarantee to your customer to hold
+the ticket if it is paid for within a certain time frame. If you give a two-week guarantee to some of your customers,
+why not to others?
+
+There are some other issues with it as well. pretix allows customers to switch payment methods as long as their payment
+has not been started or if it has failed. For example, a customer who selected bank transfer can later switch to credit
+card if they haven't sent the money yet, or a customer with a failed credit card payment can switch to a different
+method without creating a new order. If payment deadlines were dependent on the payment method, switching back and
+forth could either allow someone to extend their deadline forever, or render someones order invalid by moving the date
+back in the past.
+
 How can I revert a check-in?
 ----------------------------
 

src/pretix/__init__.py

@@ -1 +1 @@
-__version__ = "3.5.0"
+__version__ = "3.7.0"

src/pretix/api/serializers/event.py

@@ -4,7 +4,9 @@ from django.db import transaction
 from django.utils.functional import cached_property
 from django.utils.translation import ugettext as _
 from django_countries.serializers import CountryFieldMixin
+from hierarkey.proxy import HierarkeyProxy
 from pytz import common_timezones
+from rest_framework import serializers
 from rest_framework.fields import ChoiceField, Field
 from rest_framework.relations import SlugRelatedField
 
@@ -15,6 +17,8 @@ from pretix.base.models.items import SubEventItem, SubEventItemVariation
 from pretix.base.services.seating import (
     SeatProtected, generate_seats, validate_plan_change,
 )
+from pretix.base.settings import DEFAULTS, validate_settings
+from pretix.base.signals import api_event_settings_fields
 
 
 class MetaDataField(Field):
@@ -30,6 +34,19 @@ class MetaDataField(Field):
         }
 
 
+class MetaPropertyField(Field):
+
+    def to_representation(self, value):
+        return {
+            v.name: v.default for v in value.item_meta_properties.all()
+        }
+
+    def to_internal_value(self, data):
+        return {
+            'item_meta_properties': data
+        }
+
+
 class SeatCategoryMappingField(Field):
 
     def to_representation(self, value):
@@ -73,6 +90,7 @@ class TimeZoneField(ChoiceField):
 
 class EventSerializer(I18nAwareModelSerializer):
     meta_data = MetaDataField(required=False, source='*')
+    item_meta_properties = MetaPropertyField(required=False, source='*')
     plugins = PluginsField(required=False, source='*')
     seat_category_mapping = SeatCategoryMappingField(source='*', required=False)
     timezone = TimeZoneField(required=False, choices=[(a, a) for a in common_timezones])
@@ -82,7 +100,7 @@ class EventSerializer(I18nAwareModelSerializer):
         fields = ('name', 'slug', 'live', 'testmode', 'currency', 'date_from',
                   'date_to', 'date_admission', 'is_public', 'presale_start',
                   'presale_end', 'location', 'geo_lat', 'geo_lon', 'has_subevents', 'meta_data', 'seating_plan',
-                  'plugins', 'seat_category_mapping', 'timezone')
+                  'plugins', 'seat_category_mapping', 'timezone', 'item_meta_properties')
 
     def validate(self, data):
         data = super().validate(data)
@@ -127,6 +145,12 @@ class EventSerializer(I18nAwareModelSerializer):
                 raise ValidationError(_('Meta data property \'{name}\' does not exist.').format(name=key))
         return value
 
+    @cached_property
+    def item_meta_props(self):
+        return {
+            p.name: p for p in self.context['request'].event.item_meta_properties.all()
+        }
+
     def validate_seating_plan(self, value):
         if value and value.organizer != self.context['request'].organizer:
             raise ValidationError('Invalid seating plan.')
@@ -138,8 +162,11 @@ class EventSerializer(I18nAwareModelSerializer):
         return value
 
     def validate_seat_category_mapping(self, value):
-        if value and value['seat_category_mapping'] and (not self.instance or not self.instance.pk):
-            raise ValidationError('You cannot specify seat category mappings on event creation.')
+        if not self.instance or not self.instance.pk:
+            if value and value['seat_category_mapping']:
+                raise ValidationError('You cannot specify seat category mappings on event creation.')
+            else:
+                return {'seat_category_mapping': {}}
         item_cache = {i.pk: i for i in self.instance.items.all()}
         result = {}
         for k, item in value['seat_category_mapping'].items():
@@ -165,6 +192,7 @@ class EventSerializer(I18nAwareModelSerializer):
     @transaction.atomic
     def create(self, validated_data):
         meta_data = validated_data.pop('meta_data', None)
+        item_meta_properties = validated_data.pop('item_meta_properties', None)
         validated_data.pop('seat_category_mapping', None)
         plugins = validated_data.pop('plugins', settings.PRETIX_PLUGINS_DEFAULT.split(','))
         tz = validated_data.pop('timezone', None)
@@ -181,6 +209,15 @@ class EventSerializer(I18nAwareModelSerializer):
                     value=value
                 )
 
+        # Item Meta properties
+        if item_meta_properties is not None:
+            for key, value in item_meta_properties.items():
+                event.item_meta_properties.create(
+                    name=key,
+                    default=value,
+                    event=event
+                )
+
         # Seats
         if event.seating_plan:
             generate_seats(event, None, event.seating_plan, {})
@@ -195,6 +232,7 @@ class EventSerializer(I18nAwareModelSerializer):
     @transaction.atomic
     def update(self, instance, validated_data):
         meta_data = validated_data.pop('meta_data', None)
+        item_meta_properties = validated_data.pop('item_meta_properties', None)
         plugins = validated_data.pop('plugins', None)
         seat_category_mapping = validated_data.pop('seat_category_mapping', None)
         tz = validated_data.pop('timezone', None)
@@ -221,6 +259,26 @@ class EventSerializer(I18nAwareModelSerializer):
                 if prop.name not in meta_data:
                     current_object.delete()
 
+        # Item Meta properties
+        if item_meta_properties is not None:
+            current = [imp for imp in event.item_meta_properties.all()]
+            for key, value in item_meta_properties.items():
+                prop = self.item_meta_props.get(key)
+                if prop in current:
+                    prop.default = value
+                    prop.save()
+                else:
+                    prop = event.item_meta_properties.create(
+                        name=key,
+                        default=value,
+                        event=event
+                    )
+                    current.append(prop)
+
+            for prop in current:
+                if prop.name not in list(item_meta_properties.keys()):
+                    prop.delete()
+
         # Seats
         if seat_category_mapping is not None or ('seating_plan' in validated_data and validated_data['seating_plan'] is None):
             current_mappings = {
@@ -466,3 +524,127 @@ class TaxRuleSerializer(CountryFieldMixin, I18nAwareModelSerializer):
     class Meta:
         model = TaxRule
         fields = ('id', 'name', 'rate', 'price_includes_tax', 'eu_reverse_charge', 'home_country')
+
+
+class EventSettingsSerializer(serializers.Serializer):
+    default_fields = [
+        'imprint_url',
+        'checkout_email_helptext',
+        'presale_has_ended_text',
+        'voucher_explanation_text',
+        'show_date_to',
+        'show_times',
+        'show_items_outside_presale_period',
+        'display_net_prices',
+        'presale_start_show_date',
+        'locales',
+        'locale',
+        'last_order_modification_date',
+        'show_quota_left',
+        'waiting_list_enabled',
+        'waiting_list_hours',
+        'waiting_list_auto',
+        'max_items_per_order',
+        'reservation_time',
+        'contact_mail',
+        'show_variations_expanded',
+        'hide_sold_out',
+        'meta_noindex',
+        'redirect_to_checkout_directly',
+        'frontpage_subevent_ordering',
+        'frontpage_text',
+        'attendee_names_asked',
+        'attendee_names_required',
+        'attendee_emails_asked',
+        'attendee_emails_required',
+        'confirm_text',
+        'order_email_asked_twice',
+        'payment_term_days',
+        'payment_term_last',
+        'payment_term_weekdays',
+        'payment_term_expire_automatically',
+        'payment_term_accept_late',
+        'payment_explanation',
+        'ticket_download',
+        'ticket_download_date',
+        'ticket_download_addons',
+        'ticket_download_nonadm',
+        'ticket_download_pending',
+        'mail_prefix',
+        'mail_from',
+        'mail_from_name',
+        'mail_attach_ical',
+        'invoice_address_asked',
+        'invoice_address_required',
+        'invoice_address_vatid',
+        'invoice_address_company_required',
+        'invoice_address_beneficiary',
+        'invoice_address_custom_field',
+        'invoice_name_required',
+        'invoice_address_not_asked_free',
+        'invoice_show_payments',
+        'invoice_reissue_after_modify',
+        'invoice_include_free',
+        'invoice_generate',
+        'invoice_numbers_consecutive',
+        'invoice_numbers_prefix',
+        'invoice_numbers_prefix_cancellations',
+        'invoice_attendee_name',
+        'invoice_include_expire_date',
+        'invoice_address_explanation_text',
+        'invoice_email_attachment',
+        'invoice_address_from_name',
+        'invoice_address_from',
+        'invoice_address_from_zipcode',
+        'invoice_address_from_city',
+        'invoice_address_from_country',
+        'invoice_address_from_tax_id',
+        'invoice_address_from_vat_id',
+        'invoice_introductory_text',
+        'invoice_additional_text',
+        'invoice_footer_text',
+        'cancel_allow_user',
+        'cancel_allow_user_until',
+        'cancel_allow_user_paid',
+        'cancel_allow_user_paid_until',
+        'cancel_allow_user_paid_keep',
+        'cancel_allow_user_paid_keep_fees',
+        'cancel_allow_user_paid_keep_percentage',
+    ]
+
+    def __init__(self, *args, **kwargs):
+        self.event = kwargs.pop('event')
+        super().__init__(*args, **kwargs)
+        for fname in self.default_fields:
+            kwargs = DEFAULTS[fname].get('serializer_kwargs', {})
+            kwargs.setdefault('required', False)
+            kwargs.setdefault('allow_null', True)
+            form_kwargs = DEFAULTS[fname].get('form_kwargs', {})
+            if 'serializer_class' not in DEFAULTS[fname]:
+                raise ValidationError('{} has no serializer class'.format(fname))
+            f = DEFAULTS[fname]['serializer_class'](
+                **kwargs
+            )
+            f._label = form_kwargs.get('label', fname)
+            f._help_text = form_kwargs.get('help_text')
+            self.fields[fname] = f
+
+        for recv, resp in api_event_settings_fields.send(sender=self.event):
+            for fname, field in resp.items():
+                field.required = False
+                self.fields[fname] = field
+
+    def update(self, instance: HierarkeyProxy, validated_data):
+        for attr, value in validated_data.items():
+            if value is None:
+                instance.delete(attr)
+            elif instance.get(attr, as_type=type(value)) != value:
+                instance.set(attr, value)
+        return instance
+
+    def validate(self, data):
+        data = super().validate(data)
+        settings_dict = self.instance.freeze()
+        settings_dict.update(data)
+        validate_settings(self.event, settings_dict)
+        return data

src/pretix/api/serializers/item.py

@@ -2,13 +2,15 @@ from decimal import Decimal
 
 from django.core.exceptions import ValidationError
 from django.db import transaction
+from django.utils.functional import cached_property
 from django.utils.translation import ugettext_lazy as _
 from rest_framework import serializers
 
+from pretix.api.serializers.event import MetaDataField
 from pretix.api.serializers.i18n import I18nAwareModelSerializer
 from pretix.base.models import (
-    Item, ItemAddOn, ItemBundle, ItemCategory, ItemVariation, Question,
-    QuestionOption, Quota,
+    Item, ItemAddOn, ItemBundle, ItemCategory, ItemMetaValue, ItemVariation,
+    Question, QuestionOption, Quota,
 )
 
 
@@ -110,6 +112,7 @@ class ItemSerializer(I18nAwareModelSerializer):
     bundles = InlineItemBundleSerializer(many=True, required=False)
     variations = InlineItemVariationSerializer(many=True, required=False)
     tax_rate = ItemTaxRateField(source='*', read_only=True)
+    meta_data = MetaDataField(required=False, source='*')
 
     class Meta:
         model = Item
@@ -119,7 +122,7 @@ class ItemSerializer(I18nAwareModelSerializer):
                   'require_voucher', 'hide_without_voucher', 'allow_cancel', 'require_bundling',
                   'min_per_order', 'max_per_order', 'checkin_attention', 'has_variations', 'variations',
                   'addons', 'bundles', 'original_price', 'require_approval', 'generate_tickets',
-                  'show_quota_left', 'hidden_if_available', 'allow_waitinglist', 'issue_giftcard')
+                  'show_quota_left', 'hidden_if_available', 'allow_waitinglist', 'issue_giftcard', 'meta_data')
         read_only_fields = ('has_variations', 'picture')
 
     def validate(self, data):
@@ -167,18 +170,65 @@ class ItemSerializer(I18nAwareModelSerializer):
                 ItemAddOn.clean_max_min_count(addon_data['max_count'], addon_data['min_count'])
         return value
 
+    @cached_property
+    def item_meta_properties(self):
+        return {
+            p.name: p for p in self.context['request'].event.item_meta_properties.all()
+        }
+
+    def validate_meta_data(self, value):
+        for key in value['meta_data'].keys():
+            if key not in self.item_meta_properties:
+                raise ValidationError(_('Item meta data property \'{name}\' does not exist.').format(name=key))
+        return value
+
     @transaction.atomic
     def create(self, validated_data):
         variations_data = validated_data.pop('variations') if 'variations' in validated_data else {}
         addons_data = validated_data.pop('addons') if 'addons' in validated_data else {}
         bundles_data = validated_data.pop('bundles') if 'bundles' in validated_data else {}
+        meta_data = validated_data.pop('meta_data', None)
         item = Item.objects.create(**validated_data)
+
         for variation_data in variations_data:
             ItemVariation.objects.create(item=item, **variation_data)
         for addon_data in addons_data:
             ItemAddOn.objects.create(base_item=item, **addon_data)
         for bundle_data in bundles_data:
             ItemBundle.objects.create(base_item=item, **bundle_data)
+
+        # Meta data
+        if meta_data is not None:
+            for key, value in meta_data.items():
+                ItemMetaValue.objects.create(
+                    property=self.item_meta_properties.get(key),
+                    value=value,
+                    item=item
+                )
+        return item
+
+    def update(self, instance, validated_data):
+        meta_data = validated_data.pop('meta_data', None)
+        item = super().update(instance, validated_data)
+
+        # Meta data
+        if meta_data is not None:
+            current = {mv.property: mv for mv in item.meta_values.select_related('property')}
+            for key, value in meta_data.items():
+                prop = self.item_meta_properties.get(key)
+                if prop in current:
+                    current[prop].value = value
+                    current[prop].save()
+                else:
+                    item.meta_values.create(
+                        property=self.item_meta_properties.get(key),
+                        value=value
+                    )
+
+            for prop, current_object in current.items():
+                if prop.name not in meta_data:
+                    current_object.delete()
+
         return item
 
 

src/pretix/api/serializers/order.py

@@ -25,6 +25,7 @@ from pretix.base.models.orders import (
 )
 from pretix.base.pdf import get_variables
 from pretix.base.services.cart import error_messages
+from pretix.base.services.locking import NoLockManager
 from pretix.base.services.pricing import get_price
 from pretix.base.settings import COUNTRIES_WITH_STATE_IN_ADDRESS
 from pretix.base.signals import register_ticket_outputs
@@ -96,6 +97,11 @@ class AnswerQuestionOptionsIdentifierField(serializers.Field):
         return [o.identifier for o in instance.options.all()]
 
 
+class AnswerQuestionOptionsField(serializers.Field):
+    def to_representation(self, instance: QuestionAnswer):
+        return [o.pk for o in instance.options.all()]
+
+
 class InlineSeatSerializer(I18nAwareModelSerializer):
 
     class Meta:
@@ -106,6 +112,7 @@ class InlineSeatSerializer(I18nAwareModelSerializer):
 class AnswerSerializer(I18nAwareModelSerializer):
     question_identifier = AnswerQuestionIdentifierField(source='*', read_only=True)
     option_identifiers = AnswerQuestionOptionsIdentifierField(source='*', read_only=True)
+    options = AnswerQuestionOptionsField(source='*', read_only=True)
 
     class Meta:
         model = QuestionAnswer
@@ -189,6 +196,11 @@ class PdfDataSerializer(serializers.Field):
             for k, v in ev._cached_meta_data.items():
                 res['meta:' + k] = v
 
+            if not hasattr(instance.item, '_cached_meta_data'):
+                instance.item._cached_meta_data = instance.item.meta_data
+            for k, v in instance.item._cached_meta_data.items():
+                res['itemmeta:' + k] = v
+
         return res
 
 
@@ -580,6 +592,28 @@ class CompatibleJSONField(serializers.JSONField):
         return value
 
 
+class WrappedList:
+    def __init__(self, data):
+        self._data = data
+
+    def all(self):
+        return self._data
+
+
+class WrappedModel:
+    def __init__(self, model):
+        self._wrapped = model
+
+    def __getattr__(self, item):
+        return getattr(self._wrapped, item)
+
+    def save(self, *args, **kwargs):
+        raise NotImplementedError
+
+    def delete(self, *args, **kwargs):
+        raise NotImplementedError
+
+
 class OrderCreateSerializer(I18nAwareModelSerializer):
     invoice_address = InvoiceAddressSerializer(required=False)
     positions = OrderPositionCreateSerializer(many=True, required=True)
@@ -600,6 +634,7 @@ class OrderCreateSerializer(I18nAwareModelSerializer):
     force = serializers.BooleanField(default=False, required=False)
     payment_date = serializers.DateTimeField(required=False, allow_null=True)
     send_mail = serializers.BooleanField(default=False, required=False)
+    simulate = serializers.BooleanField(default=False, required=False)
 
     def __init__(self, *args, **kwargs):
         super().__init__(*args, **kwargs)
@@ -609,7 +644,7 @@ class OrderCreateSerializer(I18nAwareModelSerializer):
         model = Order
         fields = ('code', 'status', 'testmode', 'email', 'locale', 'payment_provider', 'fees', 'comment', 'sales_channel',
                   'invoice_address', 'positions', 'checkin_attention', 'payment_info', 'payment_date', 'consume_carts',
-                  'force', 'send_mail')
+                  'force', 'send_mail', 'simulate')
 
     def validate_payment_provider(self, pp):
         if pp is None:
@@ -701,6 +736,7 @@ class OrderCreateSerializer(I18nAwareModelSerializer):
         payment_info = validated_data.pop('payment_info', '{}')
         payment_date = validated_data.pop('payment_date', now())
         force = validated_data.pop('force', False)
+        simulate = validated_data.pop('simulate', False)
         self._send_mail = validated_data.pop('send_mail', False)
 
         if 'invoice_address' in validated_data:
@@ -714,7 +750,10 @@ class OrderCreateSerializer(I18nAwareModelSerializer):
         else:
             ia = None
 
-        with self.context['event'].lock() as now_dt:
+        lockfn = self.context['event'].lock
+        if simulate:
+            lockfn = NoLockManager
+        with lockfn() as now_dt:
             free_seats = set()
             seats_seen = set()
             consume_carts = validated_data.pop('consume_carts', [])
@@ -864,11 +903,20 @@ class OrderCreateSerializer(I18nAwareModelSerializer):
             order.set_expires(subevents=[p.get('subevent') for p in positions_data])
             order.meta_info = "{}"
             order.total = Decimal('0.00')
-            order.save()
+            if simulate:
+                order = WrappedModel(order)
+                order.last_modified = now()
+                order.code = 'PREVIEW'
+            else:
+                order.save()
 
             if ia:
-                ia.order = order
-                ia.save()
+                if not simulate:
+                    ia.order = order
+                    ia.save()
+                else:
+                    order.invoice_address = ia
+                    ia.last_modified = now()
 
             pos_map = {}
             for pos_data in positions_data:
@@ -880,7 +928,10 @@ class OrderCreateSerializer(I18nAwareModelSerializer):
                         '_legacy': attendee_name
                     }
                 pos = OrderPosition(**pos_data)
-                pos.order = order
+                if simulate:
+                    pos.order = order._wrapped
+                else:
+                    pos.order = order
                 if addon_to:
                     pos.addon_to = pos_map[addon_to]
 
@@ -911,19 +962,33 @@ class OrderCreateSerializer(I18nAwareModelSerializer):
                     invoice_address=ia,
                 ).gross
 
-                if pos.voucher:
-                    Voucher.objects.filter(pk=pos.voucher.pk).update(redeemed=F('redeemed') + 1)
-                pos.save()
+                if simulate:
+                    pos = WrappedModel(pos)
+                    pos.id = 0
+                    answers = []
+                    for answ_data in answers_data:
+                        options = answ_data.pop('options', [])
+                        answ = WrappedModel(QuestionAnswer(**answ_data))
+                        answ.options = WrappedList(options)
+                        answers.append(answ)
+                    pos.answers = answers
+                    pos.pseudonymization_id = "PREVIEW"
+                else:
+                    if pos.voucher:
+                        Voucher.objects.filter(pk=pos.voucher.pk).update(redeemed=F('redeemed') + 1)
+                    pos.save()
+                    for answ_data in answers_data:
+                        options = answ_data.pop('options', [])
+                        answ = pos.answers.create(**answ_data)
+                        answ.options.add(*options)
                 pos_map[pos.positionid] = pos
-                for answ_data in answers_data:
-                    options = answ_data.pop('options', [])
-                    answ = pos.answers.create(**answ_data)
-                    answ.options.add(*options)
 
-            for cp in delete_cps:
-                cp.delete()
+            if not simulate:
+                for cp in delete_cps:
+                    cp.delete()
 
-        order.total = sum([p.price for p in order.positions.all()])
+        order.total = sum([p.price for p in pos_map.values()])
+        fees = []
         for fee_data in fees_data:
             is_percentage = fee_data.pop('_treat_value_as_percentage', False)
             if is_percentage:
@@ -955,17 +1020,26 @@ class OrderCreateSerializer(I18nAwareModelSerializer):
                     fee_data['tax_rule'] = tr
                     fee_data['value'] = val
                     f = OrderFee(**fee_data)
-                    f.order = order
+                    f.order = order._wrapped if simulate else order
                     f._calculate_tax()
-                    f.save()
+                    fees.append(f)
+                    if not simulate:
+                        f.save()
             else:
                 f = OrderFee(**fee_data)
-                f.order = order
+                f.order = order._wrapped if simulate else order
                 f._calculate_tax()
-                f.save()
+                fees.append(f)
+                if not simulate:
+                    f.save()
 
-        order.total += sum([f.value for f in order.fees.all()])
-        order.save(update_fields=['total'])
+        order.total += sum([f.value for f in fees])
+        if simulate:
+            order.fees = fees
+            order.positions = pos_map.values()
+            return order  # ignore payments
+        else:
+            order.save(update_fields=['total'])
 
         if order.total == Decimal('0.00') and validated_data.get('status') == Order.STATUS_PAID and not payment_provider:
             payment_provider = 'free'
@@ -1034,6 +1108,20 @@ class InvoiceSerializer(I18nAwareModelSerializer):
                   'internal_reference')
 
 
+class OrderPaymentCreateSerializer(I18nAwareModelSerializer):
+    provider = serializers.CharField(required=True, allow_null=False, allow_blank=False)
+    info = CompatibleJSONField(required=False)
+
+    class Meta:
+        model = OrderPayment
+        fields = ('state', 'amount', 'payment_date', 'provider', 'info')
+
+    def create(self, validated_data):
+        order = OrderPayment(order=self.context['order'], **validated_data)
+        order.save()
+        return order
+
+
 class OrderRefundCreateSerializer(I18nAwareModelSerializer):
     payment = serializers.IntegerField(required=False, allow_null=True)
     provider = serializers.CharField(required=True, allow_null=False, allow_blank=False)

src/pretix/api/serializers/organizer.py

@@ -1,14 +1,19 @@
 from decimal import Decimal
 
 from django.db.models import Q
-from django.utils.translation import ugettext_lazy as _
+from django.utils.translation import get_language, ugettext_lazy as _
 from rest_framework import serializers
 from rest_framework.exceptions import ValidationError
 
 from pretix.api.serializers.i18n import I18nAwareModelSerializer
 from pretix.api.serializers.order import CompatibleJSONField
-from pretix.base.models import GiftCard, Organizer, SeatingPlan
+from pretix.base.auth import get_auth_backends
+from pretix.base.models import (
+    GiftCard, Organizer, SeatingPlan, Team, TeamAPIToken, TeamInvite, User,
+)
 from pretix.base.models.seating import SeatingPlanLayoutValidator
+from pretix.base.services.mail import SendMailException, mail
+from pretix.helpers.urls import build_absolute_uri
 
 
 class OrganizerSerializer(I18nAwareModelSerializer):
@@ -36,16 +41,129 @@ class GiftCardSerializer(I18nAwareModelSerializer):
         qs = GiftCard.objects.filter(
             secret=s
         ).filter(
-            Q(issuer=self.context["organizer"]) | Q(issuer__gift_card_collector_acceptance__collector=self.context["organizer"])
+            Q(issuer=self.context["organizer"]) | Q(
+                issuer__gift_card_collector_acceptance__collector=self.context["organizer"])
         )
         if self.instance:
             qs = qs.exclude(pk=self.instance.pk)
         if qs.exists():
             raise ValidationError(
-                {'secret': _('A gift card with the same secret already exists in your or an affiliated organizer account.')}
+                {'secret': _(
+                    'A gift card with the same secret already exists in your or an affiliated organizer account.')}
             )
         return data
 
     class Meta:
         model = GiftCard
         fields = ('id', 'secret', 'issuance', 'value', 'currency', 'testmode')
+
+
+class EventSlugField(serializers.SlugRelatedField):
+    def get_queryset(self):
+        return self.context['organizer'].events.all()
+
+
+class TeamSerializer(serializers.ModelSerializer):
+    limit_events = EventSlugField(slug_field='slug', many=True)
+
+    def __init__(self, *args, **kwargs):
+        super().__init__(*args, **kwargs)
+
+    class Meta:
+        model = Team
+        fields = (
+            'id', 'name', 'all_events', 'limit_events', 'can_create_events', 'can_change_teams',
+            'can_change_organizer_settings', 'can_manage_gift_cards', 'can_change_event_settings',
+            'can_change_items', 'can_view_orders', 'can_change_orders', 'can_view_vouchers',
+            'can_change_vouchers'
+        )
+
+    def validate(self, data):
+        full_data = self.to_internal_value(self.to_representation(self.instance)) if self.instance else {}
+        full_data.update(data)
+        if full_data.get('limit_events') and full_data.get('all_events'):
+            raise ValidationError('Do not set both limit_events and all_events.')
+        return data
+
+
+class TeamInviteSerializer(serializers.ModelSerializer):
+    class Meta:
+        model = TeamInvite
+        fields = (
+            'id', 'email'
+        )
+
+    def _send_invite(self, instance):
+        try:
+            mail(
+                instance.email,
+                _('pretix account invitation'),
+                'pretixcontrol/email/invitation.txt',
+                {
+                    'user': self,
+                    'organizer': self.context['organizer'].name,
+                    'team': instance.team.name,
+                    'url': build_absolute_uri('control:auth.invite', kwargs={
+                        'token': instance.token
+                    })
+                },
+                event=None,
+                locale=get_language()  # TODO: expose?
+            )
+        except SendMailException:
+            pass  # Already logged
+
+    def create(self, validated_data):
+        if 'email' in validated_data:
+            try:
+                user = User.objects.get(email__iexact=validated_data['email'])
+            except User.DoesNotExist:
+                if self.context['team'].invites.filter(email__iexact=validated_data['email']).exists():
+                    raise ValidationError(_('This user already has been invited for this team.'))
+                if 'native' not in get_auth_backends():
+                    raise ValidationError('Users need to have a pretix account before they can be invited.')
+
+                invite = self.context['team'].invites.create(email=validated_data['email'])
+                self._send_invite(invite)
+                invite.team.log_action(
+                    'pretix.team.invite.created',
+                    data={
+                        'email': validated_data['email']
+                    },
+                    **self.context['log_kwargs']
+                )
+                return invite
+            else:
+                if self.context['team'].members.filter(pk=user.pk).exists():
+                    raise ValidationError(_('This user already has permissions for this team.'))
+
+                self.context['team'].members.add(user)
+                self.context['team'].log_action(
+                    'pretix.team.member.added',
+                    data={
+                        'email': user.email,
+                        'user': user.pk,
+                    },
+                    **self.context['log_kwargs']
+                )
+                return TeamInvite(email=user.email)
+        else:
+            raise ValidationError('No email address given.')
+
+
+class TeamAPITokenSerializer(serializers.ModelSerializer):
+    active = serializers.BooleanField(default=True, read_only=True)
+
+    class Meta:
+        model = TeamAPIToken
+        fields = (
+            'id', 'name', 'active'
+        )
+
+
+class TeamMemberSerializer(serializers.ModelSerializer):
+    class Meta:
+        model = User
+        fields = (
+            'id', 'email', 'fullname', 'require_2fa'
+        )

src/pretix/api/urls.py

@@ -7,8 +7,8 @@ from rest_framework import routers
 from pretix.api.views import cart
 
 from .views import (
-    checkin, device, event, item, oauth, order, organizer, user, voucher,
-    waitinglist, webhooks,
+    checkin, device, event, item, oauth, order, organizer, user, version,
+    voucher, waitinglist, webhooks,
 )
 
 router = routers.DefaultRouter()
@@ -20,6 +20,12 @@ orga_router.register(r'subevents', event.SubEventViewSet)
 orga_router.register(r'webhooks', webhooks.WebHookViewSet)
 orga_router.register(r'seatingplans', organizer.SeatingPlanViewSet)
 orga_router.register(r'giftcards', organizer.GiftCardViewSet)
+orga_router.register(r'teams', organizer.TeamViewSet)
+
+team_router = routers.DefaultRouter()
+team_router.register(r'members', organizer.TeamMemberViewSet)
+team_router.register(r'invites', organizer.TeamInviteViewSet)
+team_router.register(r'tokens', organizer.TeamAPITokenViewSet)
 
 event_router = routers.DefaultRouter()
 event_router.register(r'subevents', event.SubEventViewSet)
@@ -61,7 +67,10 @@ for app in apps.get_app_configs():
 urlpatterns = [
     url(r'^', include(router.urls)),
     url(r'^organizers/(?P<organizer>[^/]+)/', include(orga_router.urls)),
+    url(r'^organizers/(?P<organizer>[^/]+)/events/(?P<event>[^/]+)/settings/$', event.EventSettingsView.as_view(),
+        name="event.settings"),
     url(r'^organizers/(?P<organizer>[^/]+)/events/(?P<event>[^/]+)/', include(event_router.urls)),
+    url(r'^organizers/(?P<organizer>[^/]+)/teams/(?P<team>[^/]+)/', include(team_router.urls)),
     url(r'^organizers/(?P<organizer>[^/]+)/events/(?P<event>[^/]+)/items/(?P<item>[^/]+)/', include(item_router.urls)),
     url(r'^organizers/(?P<organizer>[^/]+)/events/(?P<event>[^/]+)/questions/(?P<question>[^/]+)/',
         include(question_router.urls)),
@@ -76,4 +85,5 @@ urlpatterns = [
     url(r"^device/roll$", device.RollKeyView.as_view(), name="device.roll"),
     url(r"^device/revoke$", device.RevokeKeyView.as_view(), name="device.revoke"),
     url(r"^me$", user.MeView.as_view(), name="user.me"),
+    url(r"^version$", version.VersionView.as_view(), name="version"),
 ]

src/pretix/api/views/event.py

@@ -4,13 +4,14 @@ from django.db.models import ProtectedError, Q
 from django.utils.timezone import now
 from django_filters.rest_framework import DjangoFilterBackend, FilterSet
 from django_scopes import scopes_disabled
-from rest_framework import filters, viewsets
+from rest_framework import filters, views, viewsets
 from rest_framework.exceptions import PermissionDenied
+from rest_framework.response import Response
 
 from pretix.api.auth.permission import EventCRUDPermission
 from pretix.api.serializers.event import (
-    CloneEventSerializer, EventSerializer, SubEventSerializer,
-    TaxRuleSerializer,
+    CloneEventSerializer, EventSerializer, EventSettingsSerializer,
+    SubEventSerializer, TaxRuleSerializer,
 )
 from pretix.api.views import ConditionalListView
 from pretix.base.models import (
@@ -333,3 +334,33 @@ class TaxRuleViewSet(ConditionalListView, viewsets.ModelViewSet):
             auth=self.request.auth,
         )
         super().perform_destroy(instance)
+
+
+class EventSettingsView(views.APIView):
+    permission = 'can_change_event_settings'
+
+    def get(self, request, *args, **kwargs):
+        s = EventSettingsSerializer(instance=request.event.settings, event=request.event)
+        if 'explain' in request.GET:
+            return Response({
+                fname: {
+                    'value': s.data[fname],
+                    'label': getattr(field, '_label', fname),
+                    'help_text': getattr(field, '_help_text', None)
+                } for fname, field in s.fields.items()
+            })
+        return Response(s.data)
+
+    def patch(self, request, *wargs, **kwargs):
+        s = EventSettingsSerializer(instance=request.event.settings, data=request.data, partial=True,
+                                    event=request.event)
+        s.is_valid(raise_exception=True)
+        with transaction.atomic():
+            s.save()
+            self.request.event.log_action(
+                'pretix.event.settings', user=self.request.user, auth=self.request.auth, data={
+                    k: v for k, v in s.validated_data.items()
+                }
+            )
+        s = EventSettingsSerializer(instance=request.event.settings, event=request.event)
+        return Response(s.data)

src/pretix/api/views/order.py

@@ -23,9 +23,10 @@ from rest_framework.response import Response
 
 from pretix.api.models import OAuthAccessToken
 from pretix.api.serializers.order import (
-    InvoiceSerializer, OrderCreateSerializer, OrderPaymentSerializer,
-    OrderPositionSerializer, OrderRefundCreateSerializer,
-    OrderRefundSerializer, OrderSerializer, PriceCalcSerializer,
+    InvoiceSerializer, OrderCreateSerializer, OrderPaymentCreateSerializer,
+    OrderPaymentSerializer, OrderPositionSerializer,
+    OrderRefundCreateSerializer, OrderRefundSerializer, OrderSerializer,
+    PriceCalcSerializer,
 )
 from pretix.base.i18n import language
 from pretix.base.models import (
@@ -465,6 +466,9 @@ class OrderViewSet(viewsets.ModelViewSet):
             send_mail = serializer._send_mail
             order = serializer.instance
             serializer = OrderSerializer(order, context=serializer.context)
+            if not order.pk:
+                # Simulation
+                return Response(serializer.data, status=status.HTTP_201_CREATED)
 
             order.log_action(
                 'pretix.event.order.placed',
@@ -825,17 +829,62 @@ class OrderPositionViewSet(mixins.DestroyModelMixin, viewsets.ReadOnlyModelViewS
             raise ValidationError(str(e))
 
 
-class PaymentViewSet(viewsets.ReadOnlyModelViewSet):
+class PaymentViewSet(CreateModelMixin, viewsets.ReadOnlyModelViewSet):
     serializer_class = OrderPaymentSerializer
     queryset = OrderPayment.objects.none()
     permission = 'can_view_orders'
     write_permission = 'can_change_orders'
     lookup_field = 'local_id'
 
+    def get_serializer_context(self):
+        ctx = super().get_serializer_context()
+        ctx['order'] = get_object_or_404(Order, code=self.kwargs['order'], event=self.request.event)
+        return ctx
+
     def get_queryset(self):
         order = get_object_or_404(Order, code=self.kwargs['order'], event=self.request.event)
         return order.payments.all()
 
+    def create(self, request, *args, **kwargs):
+        serializer = OrderPaymentCreateSerializer(data=request.data, context=self.get_serializer_context())
+        serializer.is_valid(raise_exception=True)
+        with transaction.atomic():
+            mark_confirmed = False
+            if serializer.validated_data['state'] == OrderPayment.PAYMENT_STATE_CONFIRMED:
+                serializer.validated_data['state'] = OrderPayment.PAYMENT_STATE_PENDING
+                mark_confirmed = True
+            self.perform_create(serializer)
+            r = serializer.instance
+            if mark_confirmed:
+                try:
+                    r.confirm(
+                        user=self.request.user if self.request.user.is_authenticated else None,
+                        auth=self.request.auth,
+                        count_waitinglist=False,
+                        force=request.data.get('force', False)
+                    )
+                except Quota.QuotaExceededException:
+                    pass
+                except SendMailException:
+                    pass
+
+            serializer = OrderPaymentSerializer(r, context=serializer.context)
+
+            r.order.log_action(
+                'pretix.event.order.payment.started', {
+                    'local_id': r.local_id,
+                    'provider': r.provider,
+                },
+                user=request.user if request.user.is_authenticated else None,
+                auth=request.auth
+            )
+
+        headers = self.get_success_headers(serializer.data)
+        return Response(serializer.data, status=status.HTTP_201_CREATED, headers=headers)
+
+    def perform_create(self, serializer):
+        serializer.save()
+
     @action(detail=True, methods=['POST'])
     def confirm(self, request, **kwargs):
         payment = self.get_object()
@@ -1015,6 +1064,7 @@ class RefundViewSet(CreateModelMixin, viewsets.ReadOnlyModelViewSet):
             mark_refunded = request.data.pop('mark_refunded', False)
         else:
             mark_refunded = request.data.pop('mark_canceled', False)
+        mark_pending = request.data.pop('mark_pending', False)
         serializer = OrderRefundCreateSerializer(data=request.data, context=self.get_serializer_context())
         serializer.is_valid(raise_exception=True)
         with transaction.atomic():
@@ -1031,11 +1081,23 @@ class RefundViewSet(CreateModelMixin, viewsets.ReadOnlyModelViewSet):
                 auth=request.auth
             )
             if mark_refunded:
-                mark_order_refunded(
-                    r.order,
-                    user=request.user if request.user.is_authenticated else None,
-                    auth=(request.auth if request.auth else None),
-                )
+                try:
+                    mark_order_refunded(
+                        r.order,
+                        user=request.user if request.user.is_authenticated else None,
+                        auth=(request.auth if request.auth else None),
+                    )
+                except OrderError as e:
+                    raise ValidationError(str(e))
+            elif mark_pending:
+                if r.order.status == Order.STATUS_PAID and r.order.pending_sum > 0:
+                    r.order.status = Order.STATUS_PENDING
+                    r.order.set_expires(
+                        now(),
+                        r.order.event.subevents.filter(
+                            id__in=r.order.positions.values_list('subevent_id', flat=True))
+                    )
+                    r.order.save(update_fields=['status', 'expires'])
 
         headers = self.get_success_headers(serializer.data)
         return Response(serializer.data, status=status.HTTP_201_CREATED, headers=headers)

src/pretix/api/views/organizer.py

@@ -1,16 +1,26 @@
 from decimal import Decimal
 
+import django_filters
 from django.db import transaction
+from django.shortcuts import get_object_or_404
+from django.utils.functional import cached_property
+from django_filters.rest_framework import DjangoFilterBackend, FilterSet
+from django_scopes import scopes_disabled
 from rest_framework import filters, serializers, status, viewsets
 from rest_framework.decorators import action
 from rest_framework.exceptions import MethodNotAllowed, PermissionDenied
+from rest_framework.mixins import CreateModelMixin, DestroyModelMixin
 from rest_framework.response import Response
 
 from pretix.api.models import OAuthAccessToken
 from pretix.api.serializers.organizer import (
     GiftCardSerializer, OrganizerSerializer, SeatingPlanSerializer,
+    TeamAPITokenSerializer, TeamInviteSerializer, TeamMemberSerializer,
+    TeamSerializer,
+)
+from pretix.base.models import (
+    GiftCard, Organizer, SeatingPlan, Team, TeamAPIToken, TeamInvite, User,
 )
-from pretix.base.models import GiftCard, Organizer, SeatingPlan
 from pretix.helpers.dicts import merge_dicts
 
 
@@ -55,6 +65,7 @@ class SeatingPlanViewSet(viewsets.ModelViewSet):
         ctx['organizer'] = self.request.organizer
         return ctx
 
+    @transaction.atomic()
     def perform_create(self, serializer):
         inst = serializer.save(organizer=self.request.organizer)
         self.request.organizer.log_action(
@@ -64,6 +75,7 @@ class SeatingPlanViewSet(viewsets.ModelViewSet):
             data=merge_dicts(self.request.data, {'id': inst.pk})
         )
 
+    @transaction.atomic()
     def perform_update(self, serializer):
         if serializer.instance.events.exists() or serializer.instance.subevents.exists():
             raise PermissionDenied('This plan can not be changed while it is in use for an event.')
@@ -76,6 +88,7 @@ class SeatingPlanViewSet(viewsets.ModelViewSet):
         )
         return inst
 
+    @transaction.atomic()
     def perform_destroy(self, instance):
         if instance.events.exists() or instance.subevents.exists():
             raise PermissionDenied('This plan can not be deleted while it is in use for an event.')
@@ -88,14 +101,29 @@ class SeatingPlanViewSet(viewsets.ModelViewSet):
         instance.delete()
 
 
+with scopes_disabled():
+    class GiftCardFilter(FilterSet):
+        secret = django_filters.CharFilter(field_name='secret', lookup_expr='iexact')
+
+        class Meta:
+            model = GiftCard
+            fields = ['secret', 'testmode']
+
+
 class GiftCardViewSet(viewsets.ModelViewSet):
     serializer_class = GiftCardSerializer
     queryset = GiftCard.objects.none()
     permission = 'can_manage_gift_cards'
     write_permission = 'can_manage_gift_cards'
+    filter_backends = (DjangoFilterBackend,)
+    filterset_class = GiftCardFilter
 
     def get_queryset(self):
-        return self.request.organizer.issued_gift_cards.all()
+        if self.request.GET.get('include_accepted') == 'true':
+            qs = self.request.organizer.accepted_gift_cards
+        else:
+            qs = self.request.organizer.issued_gift_cards.all()
+        return qs
 
     def get_serializer_context(self):
         ctx = super().get_serializer_context()
@@ -116,6 +144,8 @@ class GiftCardViewSet(viewsets.ModelViewSet):
 
     @transaction.atomic()
     def perform_update(self, serializer):
+        if 'include_accepted' in self.request.GET:
+            raise PermissionDenied("Accepted gift cards cannot be updated, use transact instead.")
         GiftCard.objects.select_for_update().get(pk=self.get_object().pk)
         old_value = serializer.instance.value
         value = serializer.validated_data.pop('value')
@@ -138,18 +168,187 @@ class GiftCardViewSet(viewsets.ModelViewSet):
         value = serializers.DecimalField(max_digits=10, decimal_places=2).to_internal_value(
             request.data.get('value')
         )
+        text = serializers.CharField(allow_blank=True, allow_null=True).to_internal_value(
+            request.data.get('text', '')
+        )
         if gc.value + value < Decimal('0.00'):
             return Response({
                 'value': ['The gift card does not have sufficient credit for this operation.']
             }, status=status.HTTP_409_CONFLICT)
-        gc.transactions.create(value=value)
+        gc.transactions.create(value=value, text=text)
         gc.log_action(
             'pretix.giftcards.transaction.manual',
             user=self.request.user,
             auth=self.request.auth,
-            data={'value': value}
+            data={'value': value, 'text': text}
         )
         return Response(GiftCardSerializer(gc).data, status=status.HTTP_200_OK)
 
     def perform_destroy(self, instance):
         raise MethodNotAllowed("Gift cards cannot be deleted.")
+
+
+class TeamViewSet(viewsets.ModelViewSet):
+    serializer_class = TeamSerializer
+    queryset = Team.objects.none()
+    permission = 'can_change_teams'
+    write_permission = 'can_change_teams'
+
+    def get_queryset(self):
+        return self.request.organizer.teams.all()
+
+    def get_serializer_context(self):
+        ctx = super().get_serializer_context()
+        ctx['organizer'] = self.request.organizer
+        return ctx
+
+    @transaction.atomic()
+    def perform_create(self, serializer):
+        inst = serializer.save(organizer=self.request.organizer)
+        inst.log_action(
+            'pretix.team.created',
+            user=self.request.user,
+            auth=self.request.auth,
+            data=merge_dicts(self.request.data, {'id': inst.pk})
+        )
+
+    @transaction.atomic()
+    def perform_update(self, serializer):
+        inst = serializer.save()
+        inst.log_action(
+            'pretix.team.changed',
+            user=self.request.user,
+            auth=self.request.auth,
+            data=self.request.data
+        )
+        return inst
+
+    def perform_destroy(self, instance):
+        instance.log_action('pretix.team.deleted', user=self.request.user, auth=self.request.auth)
+        instance.delete()
+
+
+class TeamMemberViewSet(DestroyModelMixin, viewsets.ReadOnlyModelViewSet):
+    serializer_class = TeamMemberSerializer
+    queryset = User.objects.none()
+    permission = 'can_change_teams'
+    write_permission = 'can_change_teams'
+
+    @cached_property
+    def team(self):
+        return get_object_or_404(self.request.organizer.teams, pk=self.kwargs.get('team'))
+
+    def get_queryset(self):
+        return self.team.members.all()
+
+    def get_serializer_context(self):
+        ctx = super().get_serializer_context()
+        ctx['organizer'] = self.request.organizer
+        return ctx
+
+    @transaction.atomic()
+    def perform_destroy(self, instance):
+        self.team.members.remove(instance)
+        self.team.log_action(
+            'pretix.team.member.removed', user=self.request.user, auth=self.request.auth, data={
+                'email': instance.email,
+                'user': instance.pk
+            }
+        )
+
+
+class TeamInviteViewSet(CreateModelMixin, DestroyModelMixin, viewsets.ReadOnlyModelViewSet):
+    serializer_class = TeamInviteSerializer
+    queryset = TeamInvite.objects.none()
+    permission = 'can_change_teams'
+    write_permission = 'can_change_teams'
+
+    @cached_property
+    def team(self):
+        return get_object_or_404(self.request.organizer.teams, pk=self.kwargs.get('team'))
+
+    def get_queryset(self):
+        return self.team.invites.all()
+
+    def get_serializer_context(self):
+        ctx = super().get_serializer_context()
+        ctx['organizer'] = self.request.organizer
+        ctx['team'] = self.team
+        ctx['log_kwargs'] = {
+            'user': self.request.user,
+            'auth': self.request.auth,
+        }
+        return ctx
+
+    @transaction.atomic()
+    def perform_destroy(self, instance):
+        self.team.log_action(
+            'pretix.team.invite.deleted', user=self.request.user, auth=self.request.auth, data={
+                'email': instance.email,
+            }
+        )
+        instance.delete()
+
+    @transaction.atomic()
+    def perform_create(self, serializer):
+        serializer.save(team=self.team)
+
+
+class TeamAPITokenViewSet(CreateModelMixin, DestroyModelMixin, viewsets.ReadOnlyModelViewSet):
+    serializer_class = TeamAPITokenSerializer
+    queryset = TeamAPIToken.objects.none()
+    permission = 'can_change_teams'
+    write_permission = 'can_change_teams'
+
+    @cached_property
+    def team(self):
+        return get_object_or_404(self.request.organizer.teams, pk=self.kwargs.get('team'))
+
+    def get_queryset(self):
+        return self.team.tokens.all()
+
+    def get_serializer_context(self):
+        ctx = super().get_serializer_context()
+        ctx['organizer'] = self.request.organizer
+        ctx['team'] = self.team
+        ctx['log_kwargs'] = {
+            'user': self.request.user,
+            'auth': self.request.auth,
+        }
+        return ctx
+
+    @transaction.atomic()
+    def perform_destroy(self, instance):
+        instance.active = False
+        instance.save()
+        self.team.log_action(
+            'pretix.team.token.deleted', user=self.request.user, auth=self.request.auth, data={
+                'name': instance.name,
+            }
+        )
+
+    @transaction.atomic()
+    def perform_create(self, serializer):
+        instance = serializer.save(team=self.team)
+        self.team.log_action(
+            'pretix.team.token.created', auth=self.request.auth, user=self.request.user, data={
+                'name': instance.name,
+                'id': instance.pk
+            }
+        )
+
+    def create(self, request, *args, **kwargs):
+        serializer = self.get_serializer(data=request.data)
+        serializer.is_valid(raise_exception=True)
+        self.perform_create(serializer)
+        headers = self.get_success_headers(serializer.data)
+        d = serializer.data
+        d['token'] = serializer.instance.token
+        return Response(d, status=status.HTTP_201_CREATED, headers=headers)
+
+    def destroy(self, request, *args, **kwargs):
+        instance = self.get_object()
+        self.perform_destroy(instance)
+        serializer = self.get_serializer_class()(instance)
+        headers = self.get_success_headers(serializer.data)
+        return Response(serializer.data, status=status.HTTP_200_OK, headers=headers)

src/pretix/api/views/version.py

@@ -0,0 +1,56 @@
+from oauth2_provider.contrib.rest_framework import OAuth2Authentication
+from packaging import version
+from rest_framework.authentication import SessionAuthentication
+from rest_framework.response import Response
+from rest_framework.views import APIView
+
+from pretix import __version__
+from pretix.api.auth.device import DeviceTokenAuthentication
+from pretix.api.auth.token import TeamTokenAuthentication
+
+
+def numeric_version(v):
+    # Converts a pretix version to a large int
+    # e.g. 30060001000
+    #      |--------------------- Major version
+    #       |-|------------------ Minor version
+    #          |-|--------------- Patch version
+    #             ||------------- Stage (10 dev, 20 alpha, 30 beta, 40 rc, 50 release, 60 post)
+    #               ||----------- Stage version (number of dev/alpha/beta/rc/post release)
+    v = version.parse(v)
+    phases = {
+        'dev': 10,
+        'a': 20,
+        'b': 30,
+        'rc': 40,
+        'release': 50,
+        'post': 60
+    }
+    vnum = 0
+
+    if v.is_postrelease:
+        vnum += v.post
+        vnum += phases['post'] * 100
+    elif v.dev is not None:
+        vnum += v.dev
+        vnum += phases['dev'] * 100
+    elif v.is_prerelease and v.pre:
+        vnum += v.pre[0]
+        vnum += phases[v.pre[1]] * 100
+    else:
+        vnum += phases['release'] * 100
+    for i, part in enumerate(reversed(v.release)):
+        vnum += part * (1000 ** i) * 10000
+    return vnum
+
+
+class VersionView(APIView):
+    authentication_classes = (
+        SessionAuthentication, OAuth2Authentication, DeviceTokenAuthentication, TeamTokenAuthentication
+    )
+
+    def get(self, request, format=None):
+        return Response({
+            'pretix': __version__,
+            'pretix_numeric': numeric_version(__version__),
+        })

src/pretix/base/__init__.py

@@ -1,5 +1,4 @@
 from django.apps import AppConfig
-from django.conf import settings
 
 
 class PretixBaseConfig(AppConfig):
@@ -14,6 +13,7 @@ class PretixBaseConfig(AppConfig):
         from . import notifications  # NOQA
         from . import email  # NOQA
         from .services import auth, checkin, export, mail, tickets, cart, orderimport, orders, invoices, cleanup, update_check, quotas, notifications, vouchers  # NOQA
+        from django.conf import settings
 
         try:
             from .celery_app import app as celery_app  # NOQA

src/pretix/base/email.py

@@ -136,15 +136,22 @@ class TemplateBasedMailRenderer(BaseHTMLMailRenderer):
 
 
 class ClassicMailRenderer(TemplateBasedMailRenderer):
-    verbose_name = _('pretix default')
+    verbose_name = _('Default')
     identifier = 'classic'
     thumbnail_filename = 'pretixbase/email/thumb.png'
     template_name = 'pretixbase/email/plainwrapper.html'
 
 
+class UnembellishedMailRenderer(TemplateBasedMailRenderer):
+    verbose_name = _('Simple with logo')
+    identifier = 'simple_logo'
+    thumbnail_filename = 'pretixbase/email/thumb_simple_logo.png'
+    template_name = 'pretixbase/email/simple_logo.html'
+
+
 @receiver(register_html_mail_renderers, dispatch_uid="pretixbase_email_renderers")
 def base_renderers(sender, **kwargs):
-    return [ClassicMailRenderer]
+    return [ClassicMailRenderer, UnembellishedMailRenderer]
 
 
 class BaseMailTextPlaceholder:
@@ -260,6 +267,10 @@ def base_placeholders(sender, **kwargs):
         SimpleFunctionalMailTextPlaceholder(
             'event', ['event'], lambda event: event.name, lambda event: event.name
         ),
+        SimpleFunctionalMailTextPlaceholder(
+            'event', ['event_or_subevent'], lambda event_or_subevent: event_or_subevent.name,
+            lambda event_or_subevent: event_or_subevent.name
+        ),
         SimpleFunctionalMailTextPlaceholder(
             'event_slug', ['event'], lambda event: event.slug, lambda event: event.slug
         ),
@@ -272,6 +283,11 @@ def base_placeholders(sender, **kwargs):
         SimpleFunctionalMailTextPlaceholder(
             'currency', ['event'], lambda event: event.currency, lambda event: event.currency
         ),
+        SimpleFunctionalMailTextPlaceholder(
+            'refund_amount', ['event_or_subevent', 'refund_amount'],
+            lambda event_or_subevent, refund_amount: LazyCurrencyNumber(refund_amount, event_or_subevent.currency),
+            lambda event_or_subevent: LazyCurrencyNumber(Decimal('42.23'), event_or_subevent.currency)
+        ),
         SimpleFunctionalMailTextPlaceholder(
             'total_with_currency', ['event', 'order'], lambda event, order: LazyCurrencyNumber(order.total,
                                                                                                event.currency),

src/pretix/base/exporter.py

@@ -1,10 +1,12 @@
 import io
 import tempfile
 from collections import OrderedDict
+from decimal import Decimal
 from typing import Tuple
 
 from defusedcsv import csv
 from django import forms
+from django.utils.formats import localize
 from django.utils.translation import ugettext, ugettext_lazy as _
 from openpyxl import Workbook
 from openpyxl.cell.cell import KNOWN_TYPES
@@ -117,12 +119,20 @@ class ListExporter(BaseExporter):
         if output_file:
             writer = csv.writer(output_file, **kwargs)
             for line in self.iterate_list(form_data):
+                line = [
+                    localize(f) if isinstance(f, Decimal) else f
+                    for f in line
+                ]
                 writer.writerow(line)
             return self.get_filename() + '.csv', 'text/csv', None
         else:
             output = io.StringIO()
             writer = csv.writer(output, **kwargs)
             for line in self.iterate_list(form_data):
+                line = [
+                    localize(f) if isinstance(f, Decimal) else f
+                    for f in line
+                ]
                 writer.writerow(line)
             return self.get_filename() + '.csv', 'text/csv', output.getvalue().encode("utf-8")
 
@@ -196,12 +206,20 @@ class MultiSheetListExporter(ListExporter):
         if output_file:
             writer = csv.writer(output_file, **kwargs)
             for line in self.iterate_sheet(form_data, sheet):
+                line = [
+                    localize(f) if isinstance(f, Decimal) else f
+                    for f in line
+                ]
                 writer.writerow(line)
             return self.get_filename() + '.csv', 'text/csv', None
         else:
             output = io.StringIO()
             writer = csv.writer(output, **kwargs)
             for line in self.iterate_sheet(form_data, sheet):
+                line = [
+                    localize(f) if isinstance(f, Decimal) else f
+                    for f in line
+                ]
                 writer.writerow(line)
             return self.get_filename() + '.csv', 'text/csv', output.getvalue().encode("utf-8")
 

src/pretix/base/exporters/orderlist.py

@@ -3,9 +3,11 @@ from decimal import Decimal
 
 import pytz
 from django import forms
-from django.db.models import DateTimeField, F, Max, OuterRef, Subquery, Sum
+from django.db.models import (
+    Count, DateTimeField, F, IntegerField, Max, OuterRef, Subquery, Sum,
+)
 from django.dispatch import receiver
-from django.utils.formats import date_format, localize
+from django.utils.formats import date_format
 from django.utils.translation import pgettext, ugettext as _, ugettext_lazy
 
 from pretix.base.models import (
@@ -80,8 +82,12 @@ class OrderListExporter(MultiSheetListExporter):
             'm'
         ).order_by()
 
+        s = OrderPosition.objects.filter(
+            order=OuterRef('pk')
+        ).order_by().values('order').annotate(k=Count('id')).values('k')
         qs = self.event.orders.annotate(
-            payment_date=Subquery(p_date, output_field=DateTimeField())
+            payment_date=Subquery(p_date, output_field=DateTimeField()),
+            pcnt=Subquery(s, output_field=IntegerField())
         ).select_related('invoice_address').prefetch_related('invoices')
         if form_data['paid_only']:
             qs = qs.filter(status=Order.STATUS_PAID)
@@ -111,6 +117,7 @@ class OrderListExporter(MultiSheetListExporter):
         headers.append(_('Sales channel'))
         headers.append(_('Requires special attention'))
         headers.append(_('Comment'))
+        headers.append(_('Positions'))
 
         yield headers
 
@@ -134,7 +141,7 @@ class OrderListExporter(MultiSheetListExporter):
         for order in qs.order_by('datetime'):
             row = [
                 order.code,
-                localize(order.total),
+                order.total,
                 order.get_status_display(),
                 order.email,
                 order.datetime.astimezone(tz).strftime('%Y-%m-%d'),
@@ -163,7 +170,7 @@ class OrderListExporter(MultiSheetListExporter):
 
             row += [
                 order.payment_date.astimezone(tz).strftime('%Y-%m-%d') if order.payment_date else '',
-                localize(full_fee_sum_cache.get(order.id) or Decimal('0.00')),
+                full_fee_sum_cache.get(order.id) or Decimal('0.00'),
                 order.locale,
             ]
 
@@ -173,16 +180,19 @@ class OrderListExporter(MultiSheetListExporter):
                                                        {'grosssum': Decimal('0.00'), 'taxsum': Decimal('0.00')})
 
                 row += [
-                    localize(taxrate_values['grosssum'] + fee_taxrate_values['grosssum']),
-                    localize(taxrate_values['grosssum'] - taxrate_values['taxsum']
-                             + fee_taxrate_values['grosssum'] - fee_taxrate_values['taxsum']),
-                    localize(taxrate_values['taxsum'] + fee_taxrate_values['taxsum']),
+                    taxrate_values['grosssum'] + fee_taxrate_values['grosssum'],
+                    (
+                        taxrate_values['grosssum'] - taxrate_values['taxsum'] +
+                        fee_taxrate_values['grosssum'] - fee_taxrate_values['taxsum']
+                    ),
+                    taxrate_values['taxsum'] + fee_taxrate_values['taxsum'],
                 ]
 
             row.append(', '.join([i.number for i in order.invoices.all()]))
             row.append(order.sales_channel)
             row.append(_('Yes') if order.checkin_attention else _('No'))
             row.append(order.comment or "")
+            row.append(order.pcnt)
             yield row
 
     def iterate_fees(self, form_data: dict):
@@ -264,7 +274,7 @@ class OrderListExporter(MultiSheetListExporter):
             'order', 'order__invoice_address', 'item', 'variation',
             'voucher', 'tax_rule'
         ).prefetch_related(
-            'answers', 'answers__question'
+            'answers', 'answers__question', 'answers__options'
         )
         if form_data['paid_only']:
             qs = qs.filter(order__status=Order.STATUS_PAID)
@@ -299,8 +309,15 @@ class OrderListExporter(MultiSheetListExporter):
             _('Pseudonymization ID'),
         ]
         questions = list(self.event.questions.all())
+        options = {}
         for q in questions:
-            headers.append(str(q.question))
+            if q.type == Question.TYPE_CHOICE_MULTIPLE:
+                options[q.pk] = []
+                for o in q.options.all():
+                    headers.append(str(q.question) + ' – ' + str(o.answer))
+                    options[q.pk].append(o)
+            else:
+                headers.append(str(q.question))
         headers += [
             _('Company'),
             _('Invoice address name'),
@@ -354,12 +371,19 @@ class OrderListExporter(MultiSheetListExporter):
             for a in op.answers.all():
                 # We do not want to localize Date, Time and Datetime question answers, as those can lead
                 # to difficulties parsing the data (for example 2019-02-01 may become Février, 2019 01 in French).
-                if a.question.type in Question.UNLOCALIZED_TYPES:
+                if a.question.type == Question.TYPE_CHOICE_MULTIPLE:
+                    acache[a.question_id] = set(o.pk for o in a.options.all())
+                elif a.question.type in Question.UNLOCALIZED_TYPES:
                     acache[a.question_id] = a.answer
                 else:
                     acache[a.question_id] = str(a)
             for q in questions:
-                row.append(acache.get(q.pk, ''))
+                if q.type == Question.TYPE_CHOICE_MULTIPLE:
+                    for o in options[q.pk]:
+                        row.append(_('Yes') if o.pk in acache.get(q.pk, set()) else _('No'))
+                else:
+                    row.append(acache.get(q.pk, ''))
+
             try:
                 row += [
                     order.invoice_address.company,
@@ -450,7 +474,7 @@ class PaymentListExporter(ListExporter):
                 d2,
                 obj.get_state_display(),
                 obj.state,
-                localize(obj.amount * (-1 if isinstance(obj, OrderRefund) else 1)),
+                obj.amount * (-1 if isinstance(obj, OrderRefund) else 1),
                 provider_names.get(obj.provider, obj.provider)
             ]
             yield row
@@ -531,10 +555,11 @@ class InvoiceDataExporter(MultiSheetListExporter):
                 _('Foreign currency rate'),
                 _('Total value (with taxes)'),
                 _('Total value (without taxes)'),
+                _('Payment matching IDs'),
             ]
             qs = self.event.invoices.order_by('full_invoice_no').select_related(
                 'order', 'refers'
-            ).annotate(
+            ).prefetch_related('order__payments').annotate(
                 total_gross=Subquery(
                     InvoiceLine.objects.filter(
                         invoice=OuterRef('pk')
@@ -551,6 +576,16 @@ class InvoiceDataExporter(MultiSheetListExporter):
                 )
             )
             for i in qs:
+                pmis = []
+                for p in i.order.payments.all():
+                    if p.state in (OrderPayment.PAYMENT_STATE_CONFIRMED, OrderPayment.PAYMENT_STATE_CREATED,
+                                   OrderPayment.PAYMENT_STATE_PENDING, OrderPayment.PAYMENT_STATE_REFUNDED):
+                        pprov = p.payment_provider
+                        if pprov:
+                            mid = pprov.matching_id(p)
+                            if mid:
+                                pmis.append(mid)
+                pmi = '\n'.join(pmis)
                 yield [
                     i.full_invoice_no,
                     date_format(i.date, "SHORT_DATE_FORMAT"),
@@ -581,6 +616,7 @@ class InvoiceDataExporter(MultiSheetListExporter):
                     i.foreign_currency_rate,
                     i.total_gross if i.total_gross else Decimal('0.00'),
                     Decimal(i.total_net if i.total_net else '0.00').quantize(Decimal('0.01')),
+                    pmi
                 ]
         elif sheet == 'lines':
             yield [

src/pretix/base/forms/__init__.py

@@ -8,7 +8,6 @@ from django.utils.crypto import get_random_string
 from formtools.wizard.views import SessionWizardView
 from hierarkey.forms import HierarkeyForm
 
-from pretix.base.models import Event
 from pretix.base.reldate import RelativeDateField, RelativeDateTimeField
 
 from .validators import PlaceholderValidator  # NOQA
@@ -51,19 +50,33 @@ class I18nInlineFormSet(i18nfield.forms.I18nInlineFormSet):
 
 
 class SettingsForm(i18nfield.forms.I18nFormMixin, HierarkeyForm):
+    auto_fields = []
 
     def __init__(self, *args, **kwargs):
+        from pretix.base.settings import DEFAULTS
+
         self.obj = kwargs.get('obj', None)
         self.locales = self.obj.settings.get('locales') if self.obj else kwargs.pop('locales', None)
         kwargs['attribute_name'] = 'settings'
         kwargs['locales'] = self.locales
         kwargs['initial'] = self.obj.settings.freeze()
         super().__init__(*args, **kwargs)
+        for fname in self.auto_fields:
+            kwargs = DEFAULTS[fname].get('form_kwargs', {})
+            kwargs.setdefault('required', False)
+            field = DEFAULTS[fname]['form_class'](
+                **kwargs
+            )
+            if isinstance(field, i18nfield.forms.I18nFormField):
+                field.widget.enabled_locales = self.locales
+            self.fields[fname] = field
         for k, f in self.fields.items():
             if isinstance(f, (RelativeDateTimeField, RelativeDateField)):
                 f.set_event(self.obj)
 
     def get_new_filename(self, name: str) -> str:
+        from pretix.base.models import Event
+
         nonce = get_random_string(length=8)
         if isinstance(self.obj, Event):
             fname = '%s/%s/%s.%s.%s' % (

src/pretix/base/forms/questions.py

@@ -457,7 +457,7 @@ class BaseInvoiceAddressForm(forms.ModelForm):
     class Meta:
         model = InvoiceAddress
         fields = ('is_business', 'company', 'name_parts', 'street', 'zipcode', 'city', 'country', 'state',
-                  'vat_id', 'internal_reference', 'beneficiary')
+                  'vat_id', 'internal_reference', 'beneficiary', 'custom_field')
         widgets = {
             'is_business': BusinessBooleanRadio,
             'street': forms.Textarea(attrs={
@@ -561,6 +561,11 @@ class BaseInvoiceAddressForm(forms.ModelForm):
         if not event.settings.invoice_address_beneficiary:
             del self.fields['beneficiary']
 
+        if event.settings.invoice_address_custom_field:
+            self.fields['custom_field'].label = event.settings.invoice_address_custom_field
+        else:
+            del self.fields['custom_field']
+
         for k, v in self.fields.items():
             if v.widget.attrs.get('autocomplete') or k == 'name_parts':
                 v.widget.attrs['autocomplete'] = 'section-invoice billing ' + v.widget.attrs.get('autocomplete', '')

src/pretix/base/forms/widgets.py

@@ -6,9 +6,6 @@ from django.utils.functional import lazy
 from django.utils.timezone import now
 from django.utils.translation import ugettext_lazy as _
 
-from pretix.base.models import OrderPosition
-from pretix.multidomain.urlreverse import eventreverse
-
 
 class DatePickerWidget(forms.DateInput):
     def __init__(self, attrs=None, date_format=None):
@@ -71,6 +68,9 @@ class UploadedFileWidget(forms.ClearableFileInput):
 
         @property
         def url(self):
+            from pretix.base.models import OrderPosition
+            from pretix.multidomain.urlreverse import eventreverse
+
             if isinstance(self.position, OrderPosition):
                 return eventreverse(self.event, 'presale:event.order.download.answer', kwargs={
                     'order': self.position.order.code,

src/pretix/base/invoice.py

@@ -28,7 +28,7 @@ from reportlab.platypus import (
 )
 
 from pretix.base.decimal import round_decimal
-from pretix.base.models import Event, Invoice
+from pretix.base.models import Event, Invoice, Order
 from pretix.base.signals import register_invoice_renderers
 from pretix.base.templatetags.money import money_filter
 
@@ -459,6 +459,12 @@ class ClassicInvoiceRenderer(BaseReportlabInvoiceRenderer):
 
     def _get_intro(self):
         story = []
+        if self.invoice.custom_field:
+            story.append(Paragraph(
+                '{}: {}'.format(self.invoice.event.settings.invoice_address_custom_field, self.invoice.custom_field),
+                self.stylesheet['Normal']
+            ))
+
         if self.invoice.internal_reference:
             story.append(Paragraph(
                 pgettext('invoice', 'Customer reference: {reference}').format(reference=self.invoice.internal_reference),
@@ -559,6 +565,20 @@ class ClassicInvoiceRenderer(BaseReportlabInvoiceRenderer):
             ])
             colwidths = [a * doc.width for a in (.65, .05, .30)]
 
+        if self.invoice.event.settings.invoice_show_payments and not self.invoice.is_cancellation and \
+                self.invoice.order.status == Order.STATUS_PENDING:
+            pending_sum = self.invoice.order.pending_sum
+            if pending_sum != total:
+                tdata.append([pgettext('invoice', 'Received payments')] + (['', '', ''] if has_taxes else ['']) + [
+                    money_filter(pending_sum - total, self.invoice.event.currency)
+                ])
+                tdata.append([pgettext('invoice', 'Outstanding payments')] + (['', '', ''] if has_taxes else ['']) + [
+                    money_filter(pending_sum, self.invoice.event.currency)
+                ])
+                tstyledata += [
+                    ('FONTNAME', (0, len(tdata) - 3), (-1, len(tdata) - 3), self.font_bold),
+                ]
+
         table = Table(tdata, colWidths=colwidths, repeatRows=1)
         table.setStyle(TableStyle(tstyledata))
         story.append(table)

src/pretix/base/management/commands/shell_scoped.py

@@ -13,11 +13,17 @@ class Command(BaseCommand):
         return parser
 
     def handle(self, *args, **options):
+        try:
+            from django_extensions.management.commands import shell_plus  # noqa
+            cmd = 'shell_plus'
+        except ImportError:
+            cmd = 'shell'
+
         parser = self.create_parser(sys.argv[0], sys.argv[1])
         flags = parser.parse_known_args(sys.argv[2:])[1]
         if "--override" in flags:
             with scopes_disabled():
-                return call_command("shell_plus", *args, **options)
+                return call_command(cmd, *args, **options)
 
         lookups = {}
         for flag in flags:
@@ -36,4 +42,4 @@ class Command(BaseCommand):
             for app_name, app_value in lookups.items()
         }
         with scope(**scope_options):
-            return call_command("shell_plus", *args, **options)
+            return call_command(cmd, *args, **options)

src/pretix/base/migrations/0143_auto_20200217_1211.py

@@ -0,0 +1,28 @@
+# Generated by Django 2.2.4 on 2020-02-17 12:11
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('pretixbase', '0142_auto_20191215_1522'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='seat',
+            name='row_label',
+            field=models.CharField(max_length=190, null=True),
+        ),
+        migrations.AddField(
+            model_name='seat',
+            name='seat_label',
+            field=models.CharField(max_length=190, null=True),
+        ),
+        migrations.AlterField(
+            model_name='giftcard',
+            name='secret',
+            field=models.CharField(db_index=True, max_length=190),
+        ),
+    ]

src/pretix/base/migrations/0144_invoiceaddress_custom_field.py

@@ -0,0 +1,22 @@
+# Generated by Django 2.2.9 on 2020-02-18 08:06
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+    dependencies = [
+        ('pretixbase', '0143_auto_20200217_1211'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='invoiceaddress',
+            name='custom_field',
+            field=models.CharField(max_length=255, null=True, blank=True),
+        ),
+        migrations.AddField(
+            model_name='invoice',
+            name='custom_field',
+            field=models.CharField(max_length=255, null=True),
+        ),
+    ]

src/pretix/base/migrations/0145_auto_20200210_1038.py

@@ -0,0 +1,42 @@
+# Generated by Django 2.2.8 on 2020-02-10 10:38
+
+import django.db.models.deletion
+from django.db import migrations, models
+
+import pretix.base.models.base
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('pretixbase', '0144_invoiceaddress_custom_field'),
+    ]
+
+    operations = [
+        migrations.CreateModel(
+            name='ItemMetaProperty',
+            fields=[
+                ('id', models.AutoField(auto_created=True, primary_key=True, serialize=False)),
+                ('name', models.CharField(db_index=True, max_length=50)),
+                ('default', models.TextField()),
+                ('event', models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, related_name='item_meta_properties', to='pretixbase.Event')),
+            ],
+            options={
+                'abstract': False,
+            },
+            bases=(models.Model, pretix.base.models.base.LoggingMixin),
+        ),
+        migrations.CreateModel(
+            name='ItemMetaValue',
+            fields=[
+                ('id', models.AutoField(auto_created=True, primary_key=True, serialize=False)),
+                ('value', models.TextField()),
+                ('item', models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, related_name='meta_values', to='pretixbase.Item')),
+                ('property', models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, related_name='item_values', to='pretixbase.ItemMetaProperty')),
+            ],
+            options={
+                'unique_together': {('item', 'property')},
+            },
+            bases=(models.Model, pretix.base.models.base.LoggingMixin),
+        ),
+    ]

src/pretix/base/migrations/0146_giftcardtransaction_text.py

@@ -0,0 +1,18 @@
+# Generated by Django 2.2.4 on 2020-03-02 11:28
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('pretixbase', '0145_auto_20200210_1038'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='giftcardtransaction',
+            name='text',
+            field=models.TextField(null=True),
+        ),
+    ]

src/pretix/base/models/__init__.py

@@ -10,9 +10,9 @@ from .event import (
 from .giftcards import GiftCard, GiftCardAcceptance, GiftCardTransaction
 from .invoices import Invoice, InvoiceLine, invoice_filename
 from .items import (
-    Item, ItemAddOn, ItemBundle, ItemCategory, ItemVariation, Question,
-    QuestionOption, Quota, SubEventItem, SubEventItemVariation,
-    itempicture_upload_to,
+    Item, ItemAddOn, ItemBundle, ItemCategory, ItemMetaProperty, ItemMetaValue,
+    ItemVariation, Question, QuestionOption, Quota, SubEventItem,
+    SubEventItemVariation, itempicture_upload_to,
 )
 from .log import LogEntry
 from .notifications import NotificationSetting

src/pretix/base/models/devices.py

@@ -94,6 +94,7 @@ class Device(LoggedModel):
         return {
             'can_view_orders',
             'can_change_orders',
+            'can_manage_gift_cards'
         }
 
     def get_event_permission_set(self, organizer, event) -> set:

src/pretix/base/models/event.py

@@ -293,7 +293,7 @@ class Event(EventMixin, LoggedModel):
             "This will be used in URLs, order codes, invoice numbers, and bank transfer references."),
         validators=[
             RegexValidator(
-                regex="^[a-zA-Z0-9.-]+$",
+                regex="^[a-zA-Z0-9][a-zA-Z0-9.-]+$",
                 message=_("The slug may only contain letters, numbers, dots and dashes."),
             ),
             EventSlugBanlistValidator()
@@ -515,7 +515,7 @@ class Event(EventMixin, LoggedModel):
         ), tz)
 
     def copy_data_from(self, other):
-        from . import ItemAddOn, ItemCategory, Item, Question, Quota
+        from . import ItemAddOn, ItemCategory, Item, Question, Quota, ItemMetaValue
         from ..signals import event_copy_data
 
         self.plugins = other.plugins
@@ -540,6 +540,14 @@ class Event(EventMixin, LoggedModel):
             c.save()
             c.log_action('pretix.object.cloned')
 
+        item_meta_properties_map = {}
+        for imp in other.item_meta_properties.all():
+            item_meta_properties_map[imp.pk] = imp
+            imp.pk = None
+            imp.event = self
+            imp.save()
+            imp.log_action('pretix.object.cloned')
+
         item_map = {}
         variation_map = {}
         for i in Item.objects.filter(event=other).prefetch_related('variations'):
@@ -561,6 +569,12 @@ class Event(EventMixin, LoggedModel):
                 v.item = i
                 v.save()
 
+        for imv in ItemMetaValue.objects.filter(item__event=other).prefetch_related('item', 'property'):
+            imv.pk = None
+            imv.property = item_meta_properties_map[imv.property.pk]
+            imv.item = item_map[imv.item.pk]
+            imv.save()
+
         for ia in ItemAddOn.objects.filter(base_item__event=other).prefetch_related('base_item', 'addon_category'):
             ia.pk = None
             ia.base_item = item_map[ia.base_item.pk]
@@ -633,6 +647,8 @@ class Event(EventMixin, LoggedModel):
         for s in other.seats.filter(subevent__isnull=True):
             s.pk = None
             s.event = self
+            if s.product_id:
+                s.product = item_map[s.product_id]
             s.save()
 
         for s in other.settings._objects.all():

src/pretix/base/models/giftcards.py

@@ -1,6 +1,7 @@
 from decimal import Decimal
 
 from django.conf import settings
+from django.core.validators import RegexValidator
 from django.db import models
 from django.db.models import Sum
 from django.utils.crypto import get_random_string
@@ -10,7 +11,7 @@ from pretix.base.banlist import banned
 from pretix.base.models import LoggedModel
 
 
-def gen_giftcard_secret(length):
+def gen_giftcard_secret(length=8):
     charset = list('ABCDEFGHJKLMNPQRSTUVWXYZ3789')
     while True:
         code = get_random_string(length=length, allowed_chars=charset)
@@ -50,6 +51,12 @@ class GiftCard(LoggedModel):
         max_length=190,
         db_index=True,
         verbose_name=_('Gift card code'),
+        validators=[
+            RegexValidator(
+                regex="^[a-zA-Z0-9][a-zA-Z0-9.-]+$",
+                message=_("The giftcard code may only contain letters, numbers, dots and dashes."),
+            )
+        ],
     )
     testmode = models.BooleanField(
         verbose_name=_('Test mode card'),
@@ -112,6 +119,7 @@ class GiftCardTransaction(models.Model):
         blank=True,
         on_delete=models.PROTECT
     )
+    text = models.TextField(blank=True, null=True)
 
     class Meta:
         ordering = ("datetime",)

src/pretix/base/models/invoices.py

@@ -111,6 +111,7 @@ class Invoice(models.Model):
 
     file = models.FileField(null=True, blank=True, upload_to=invoice_filename, max_length=255)
     internal_reference = models.TextField(blank=True)
+    custom_field = models.CharField(max_length=255, null=True)
 
     objects = ScopedManager(organizer='event__organizer')
 
@@ -120,13 +121,19 @@ class Invoice(models.Model):
 
     @property
     def full_invoice_from(self):
+        taxidrow = ""
+        if self.invoice_from_tax_id:
+            if str(self.invoice_from_country) == "AU":
+                taxidrow = "ABN: %s" % self.invoice_from_tax_id
+            else:
+                taxidrow = pgettext("invoice", "Tax ID: %s") % self.invoice_from_tax_id
         parts = [
             self.invoice_from_name,
             self.invoice_from,
             (self.invoice_from_zipcode or "") + " " + (self.invoice_from_city or ""),
             self.invoice_from_country.name if self.invoice_from_country else "",
             pgettext("invoice", "VAT-ID: %s") % self.invoice_from_vat_id if self.invoice_from_vat_id else "",
-            pgettext("invoice", "Tax ID: %s") % self.invoice_from_tax_id if self.invoice_from_tax_id else "",
+            taxidrow,
         ]
         return '\n'.join([p.strip() for p in parts if p and p.strip()])
 

src/pretix/base/models/items.py

@@ -1,6 +1,6 @@
 import sys
 import uuid
-from collections import Counter
+from collections import Counter, OrderedDict
 from datetime import date, datetime, time
 from decimal import Decimal, DecimalException
 from typing import Tuple
@@ -9,6 +9,7 @@ import dateutil.parser
 import pytz
 from django.conf import settings
 from django.core.exceptions import ValidationError
+from django.core.validators import RegexValidator
 from django.db import models
 from django.db.models import F, Func, Q, Sum
 from django.utils import formats
@@ -591,6 +592,16 @@ class Item(LoggedModel):
             if from_date > until_date:
                 raise ValidationError(_('The item\'s availability cannot end before it starts.'))
 
+    @property
+    def meta_data(self):
+        data = {p.name: p.default for p in self.event.item_meta_properties.all()}
+        if hasattr(self, 'meta_values_cached'):
+            data.update({v.property.name: v.value for v in self.meta_values_cached})
+        else:
+            data.update({v.property.name: v.value for v in self.meta_values.select_related('property').all()})
+
+        return OrderedDict((k, v) for k, v in sorted(data.items(), key=lambda k: k[0]))
+
 
 class ItemVariation(models.Model):
     """
@@ -1541,3 +1552,57 @@ class Quota(LoggedModel):
         else:
             if subevent:
                 raise ValidationError(_('The subevent does not belong to this event.'))
+
+
+class ItemMetaProperty(LoggedModel):
+    """
+    An event can have ItemMetaProperty objects attached to define meta information fields
+    for its items. This information can be re-used for example in ticket layouts.
+
+    :param event: The event this property is defined for.
+    :type event: Event
+    :param name: Name
+    :type name: Name of the property, used in various places
+    :param default: Default value
+    :type default: str
+    """
+    event = models.ForeignKey(Event, related_name="item_meta_properties", on_delete=models.CASCADE)
+    name = models.CharField(
+        max_length=50, db_index=True,
+        help_text=_(
+            "Can not contain spaces or special characters except underscores"
+        ),
+        validators=[
+            RegexValidator(
+                regex="^[a-zA-Z0-9_]+$",
+                message=_("The property name may only contain letters, numbers and underscores."),
+            ),
+        ],
+        verbose_name=_("Name"),
+    )
+    default = models.TextField(blank=True)
+
+
+class ItemMetaValue(LoggedModel):
+    """
+    A meta-data value assigned to an item.
+
+    :param item: The item this metadata is valid for
+    :type item: Item
+    :param property: The property this value belongs to
+    :type property: ItemMetaProperty
+    :param value: The actual value
+    :type value: str
+    """
+    item = models.ForeignKey('Item', on_delete=models.CASCADE, related_name='meta_values')
+    property = models.ForeignKey('ItemMetaProperty', on_delete=models.CASCADE, related_name='item_values')
+    value = models.TextField()
+
+    class Meta:
+        unique_together = ('item', 'property')
+
+    def delete(self, *args, **kwargs):
+        super().delete(*args, **kwargs)
+
+    def save(self, *args, **kwargs):
+        super().save(*args, **kwargs)

src/pretix/base/models/orders.py

@@ -400,10 +400,13 @@ class Order(LockModel, LoggedModel):
         term_last = self.event.settings.get('payment_term_last', as_type=RelativeDateWrapper)
         if term_last:
             if self.event.has_subevents and subevents:
-                term_last = min([
+                terms = [
                     term_last.datetime(se).date()
                     for se in subevents
-                ])
+                ]
+                if not terms:
+                    return
+                term_last = min(terms)
             else:
                 term_last = term_last.datetime(self.event).date()
             term_last = make_aware(datetime.combine(
@@ -423,7 +426,7 @@ class Order(LockModel, LoggedModel):
 
     def cancel_allowed(self):
         return (
-            self.status in (Order.STATUS_PENDING, Order.STATUS_PAID) and self.count_positions
+            self.status in (Order.STATUS_PENDING, Order.STATUS_PAID, Order.STATUS_EXPIRED) and self.count_positions
         )
 
     @cached_property
@@ -434,26 +437,28 @@ class Order(LockModel, LoggedModel):
             until = self.event.settings.get('cancel_allow_user_until', as_type=RelativeDateWrapper)
         if until:
             if self.event.has_subevents:
-                return min([
+                terms = [
                     until.datetime(se)
                     for se in self.event.subevents.filter(id__in=self.positions.values_list('subevent', flat=True))
-                ])
+                ]
+                return min(terms) if terms else None
             else:
                 return until.datetime(self.event)
 
     @cached_property
     def user_cancel_fee(self):
         fee = Decimal('0.00')
-        if self.event.settings.cancel_allow_user_paid_keep:
-            fee += self.event.settings.cancel_allow_user_paid_keep
-        if self.event.settings.cancel_allow_user_paid_keep_percentage:
-            fee += self.event.settings.cancel_allow_user_paid_keep_percentage / Decimal('100.0') * self.total
         if self.event.settings.cancel_allow_user_paid_keep_fees:
             fee += self.fees.filter(
-                fee_type__in=(OrderFee.FEE_TYPE_PAYMENT, OrderFee.FEE_TYPE_SHIPPING, OrderFee.FEE_TYPE_SERVICE)
+                fee_type__in=(OrderFee.FEE_TYPE_PAYMENT, OrderFee.FEE_TYPE_SHIPPING, OrderFee.FEE_TYPE_SERVICE,
+                              OrderFee.FEE_TYPE_CANCELLATION)
             ).aggregate(
                 s=Sum('value')
             )['s'] or 0
+        if self.event.settings.cancel_allow_user_paid_keep_percentage:
+            fee += self.event.settings.cancel_allow_user_paid_keep_percentage / Decimal('100.0') * (self.total - fee)
+        if self.event.settings.cancel_allow_user_paid_keep:
+            fee += self.event.settings.cancel_allow_user_paid_keep
         return round_decimal(fee, self.event.currency)
 
     @property
@@ -586,10 +591,11 @@ class Order(LockModel, LoggedModel):
 
         modify_deadline = self.event.settings.get('last_order_modification_date', as_type=RelativeDateWrapper)
         if self.event.has_subevents and modify_deadline:
-            modify_deadline = min([
+            dates = [
                 modify_deadline.datetime(se)
                 for se in self.event.subevents.filter(id__in=self.positions.values_list('subevent', flat=True))
-            ])
+            ]
+            modify_deadline = min(dates) if dates else None
         elif modify_deadline:
             modify_deadline = modify_deadline.datetime(self.event)
 
@@ -620,10 +626,11 @@ class Order(LockModel, LoggedModel):
         dl_date = self.event.settings.get('ticket_download_date', as_type=RelativeDateWrapper)
         if dl_date:
             if self.event.has_subevents:
-                dl_date = min([
+                dates = [
                     dl_date.datetime(se)
                     for se in self.event.subevents.filter(id__in=self.positions.values_list('subevent', flat=True))
-                ])
+                ]
+                dl_date = min(dates) if dates else None
             else:
                 dl_date = dl_date.datetime(self.event)
         return dl_date
@@ -648,10 +655,14 @@ class Order(LockModel, LoggedModel):
         term_last = self.event.settings.get('payment_term_last', as_type=RelativeDateWrapper)
         if term_last:
             if self.event.has_subevents:
-                term_last = min([
+                terms = [
                     term_last.datetime(se).date()
                     for se in self.event.subevents.filter(id__in=self.positions.values_list('subevent', flat=True))
-                ])
+                ]
+                if terms:
+                    term_last = min(terms)
+                else:
+                    term_last = None
             else:
                 term_last = term_last.datetime(self.event).date()
             term_last = make_aware(datetime.combine(
@@ -900,7 +911,7 @@ class QuestionAnswer(models.Model):
 
     @property
     def is_image(self):
-        return any(self.file.name.endswith(e) for e in ('.jpg', '.png', '.gif', '.tiff', '.bmp', '.jpeg'))
+        return any(self.file.name.lower().endswith(e) for e in ('.jpg', '.png', '.gif', '.tiff', '.bmp', '.jpeg'))
 
     @property
     def file_name(self):
@@ -1258,6 +1269,36 @@ class OrderPayment(models.Model):
             self.order.log_action('pretix.event.order.overpaid', {}, user=user, auth=auth)
         order_paid.send(self.order.event, order=self.order)
 
+    def fail(self, info=None, user=None, auth=None):
+        """
+        Marks the order as failed and sets info to ``info``, but only if the order is in ``created`` or ``pending``
+        state. This is equivalent to setting ``state`` to ``OrderPayment.PAYMENT_STATE_FAILED`` and logging a failure,
+        but it adds strong database logging since we do not want to report a failure for an order that has just
+        been marked as paid.
+        """
+        with transaction.atomic():
+            locked_instance = OrderPayment.objects.select_for_update().get(pk=self.pk)
+            if locked_instance.state not in (OrderPayment.PAYMENT_STATE_CREATED, OrderPayment.PAYMENT_STATE_PENDING):
+                # Race condition detected, this payment is already confirmed
+                logger.info('Failed payment {} but ignored due to likely race condition.'.format(
+                    self.full_id,
+                ))
+                return
+
+            if isinstance(info, str):
+                locked_instance.info = info
+            elif info:
+                locked_instance.info_data = info
+            locked_instance.state = OrderPayment.PAYMENT_STATE_FAILED
+            locked_instance.save(update_fields=['state', 'info'])
+
+        self.refresh_from_db()
+        self.order.log_action('pretix.event.order.payment.failed', {
+            'local_id': self.local_id,
+            'provider': self.provider,
+            'info': info,
+        }, user=user, auth=auth)
+
     def confirm(self, count_waitinglist=True, send_mail=True, force=False, user=None, auth=None, mail_text='',
                 ignore_date=False, lock=True, payment_date=None):
         """
@@ -1285,6 +1326,9 @@ class OrderPayment(models.Model):
             locked_instance = OrderPayment.objects.select_for_update().get(pk=self.pk)
             if locked_instance.state == self.PAYMENT_STATE_CONFIRMED:
                 # Race condition detected, this payment is already confirmed
+                logger.info('Confirmed payment {} but ignored due to likely race condition.'.format(
+                    self.full_id,
+                ))
                 return
 
             locked_instance.state = self.PAYMENT_STATE_CONFIRMED
@@ -1305,6 +1349,7 @@ class OrderPayment(models.Model):
         }, user=user, auth=auth)
 
         if self.order.status in (Order.STATUS_PAID, Order.STATUS_CANCELED):
+            logger.info('Confirmed payment {} but order is in status {}.'.format(self.full_id, self.order.status))
             return
 
         payment_sum = self.order.payments.filter(
@@ -1315,6 +1360,9 @@ class OrderPayment(models.Model):
                        OrderRefund.REFUND_STATE_CREATED)
         ).aggregate(s=Sum('amount'))['s'] or Decimal('0.00')
         if payment_sum - refund_sum < self.order.total:
+            logger.info('Confirmed payment {} but payment sum is {} and refund sum is.'.format(
+                self.full_id, payment_sum, refund_sum
+            ))
             return
 
         if (self.order.status == Order.STATUS_PENDING and self.order.expires > now() + timedelta(hours=12)) or not lock:
@@ -1873,8 +1921,9 @@ class OrderPosition(AbstractPosition):
         if self.tax_rate is None:
             self._calculate_tax()
         self.order.touch()
-        if self.pk is None:
-            while OrderPosition.all.filter(secret=self.secret).exists():
+        if not self.pk:
+            while OrderPosition.all.filter(secret=self.secret,
+                                           order__event__organizer_id=self.order.event.organizer_id).exists():
                 self.secret = generate_position_secret()
 
         if not self.pseudonymization_id:
@@ -1891,9 +1940,10 @@ class OrderPosition(AbstractPosition):
         charset = list('ABCDEFGHJKLMNPQRSTUVWXYZ3789')
         while True:
             code = get_random_string(length=10, allowed_chars=charset)
-            if not OrderPosition.all.filter(pseudonymization_id=code).exists():
-                self.pseudonymization_id = code
-                return
+            with scopes_disabled():
+                if not OrderPosition.all.filter(pseudonymization_id=code).exists():
+                    self.pseudonymization_id = code
+                    return
 
     @property
     def event(self):
@@ -2045,6 +2095,7 @@ class InvoiceAddress(models.Model):
     vat_id = models.CharField(max_length=255, blank=True, verbose_name=_('VAT ID'),
                               help_text=_('Only for business customers within the EU.'))
     vat_id_validated = models.BooleanField(default=False)
+    custom_field = models.CharField(max_length=255, null=True, blank=True)
     internal_reference = models.TextField(
         verbose_name=_('Internal reference'),
         help_text=_('This reference will be printed on your invoice for your convenience.'),

src/pretix/base/models/organizer.py

@@ -37,7 +37,7 @@ class Organizer(LoggedModel):
             "once. This is being used in URLs to refer to your organizer accounts and your events."),
         validators=[
             RegexValidator(
-                regex="^[a-zA-Z0-9.-]+$",
+                regex="^[a-zA-Z0-9][a-zA-Z0-9.-]+$",
                 message=_("The slug may only contain letters, numbers, dots and dashes.")
             ),
             OrganizerSlugBanlistValidator()

src/pretix/base/models/seating.py

@@ -28,7 +28,8 @@ class SeatingPlanLayoutValidator:
         try:
             jsonschema.validate(val, schema)
         except jsonschema.ValidationError as e:
-            raise ValidationError(_('Your layout file is not a valid seating plan. Error message: {}').format(str(e)))
+            e = str(e).replace('%', '%%')
+            raise ValidationError(_('Your layout file is not a valid seating plan. Error message: {}').format(e))
 
 
 class SeatingPlan(LoggedModel):
@@ -40,7 +41,7 @@ class SeatingPlan(LoggedModel):
     layout = models.TextField(validators=[SeatingPlanLayoutValidator()])
 
     Category = namedtuple('Categrory', 'name')
-    RawSeat = namedtuple('Seat', 'name guid number row category zone sorting_rank')
+    RawSeat = namedtuple('Seat', 'name guid number row category zone sorting_rank row_label seat_label')
 
     def __str__(self):
         return self.name
@@ -69,11 +70,17 @@ class SeatingPlan(LoggedModel):
         # optimization, because this way we do not need to update the rank of very seat if we change a plan a little.
         for zi, z in enumerate(self.layout_data['zones']):
             for ri, r in enumerate(z['rows']):
+                row_label = None
+                if r.get('row_label'):
+                    row_label = r['row_label'].replace("%s", r.get('row_number', str(ri)))
                 try:
                     row_rank = int(r['row_number'])
                 except ValueError:
                     row_rank = ri
                 for si, s in enumerate(r['seats']):
+                    seat_label = None
+                    if r.get('seat_label'):
+                        seat_label = r['seat_label'].replace("%s", s.get('seat_number', str(si)))
                     try:
                         seat_rank = int(s['seat_number'])
                     except ValueError:
@@ -87,6 +94,8 @@ class SeatingPlan(LoggedModel):
                         guid=s['seat_guid'],
                         name='{} {}'.format(r['row_number'], s['seat_number']),  # TODO: Zone? Variable scheme?
                         row=r['row_number'],
+                        row_label=row_label,
+                        seat_label=seat_label,
                         zone=z['name'],
                         category=s['category'],
                         sorting_rank=rank
@@ -114,7 +123,9 @@ class Seat(models.Model):
     name = models.CharField(max_length=190)
     zone_name = models.CharField(max_length=190, blank=True, default="")
     row_name = models.CharField(max_length=190, blank=True, default="")
+    row_label = models.CharField(max_length=190, null=True)
     seat_number = models.CharField(max_length=190, blank=True, default="")
+    seat_label = models.CharField(max_length=190, null=True)
     seat_guid = models.CharField(max_length=190, db_index=True)
     product = models.ForeignKey('Item', null=True, blank=True, related_name='seats', on_delete=models.CASCADE)
     blocked = models.BooleanField(default=False)
@@ -127,10 +138,17 @@ class Seat(models.Model):
         parts = []
         if self.zone_name:
             parts.append(self.zone_name)
-        if self.row_name:
+
+        if self.row_label:
+            parts.append(self.row_label)
+        elif self.row_name:
             parts.append(gettext('Row {number}').format(number=self.row_name))
-        if self.seat_number:
+
+        if self.seat_label:
+            parts.append(self.seat_label)
+        elif self.seat_number:
             parts.append(gettext('Seat {number}').format(number=self.seat_number))
+
         if not parts:
             return self.name
         return ', '.join(parts)

src/pretix/base/payment.py

@@ -1,3 +1,4 @@
+import hashlib
 import json
 import logging
 from collections import OrderedDict
@@ -14,6 +15,7 @@ from django.dispatch import receiver
 from django.forms import Form
 from django.http import HttpRequest
 from django.template.loader import get_template
+from django.utils.crypto import get_random_string
 from django.utils.timezone import now
 from django.utils.translation import pgettext_lazy, ugettext_lazy as _
 from django_countries import Countries
@@ -32,7 +34,7 @@ from pretix.base.signals import register_payment_providers
 from pretix.base.templatetags.money import money_filter
 from pretix.base.templatetags.rich_text import rich_text
 from pretix.helpers.money import DecimalTextInput
-from pretix.multidomain.urlreverse import eventreverse
+from pretix.multidomain.urlreverse import build_absolute_uri, eventreverse
 from pretix.presale.views import get_cart, get_cart_total
 from pretix.presale.views.cart import cart_session, get_or_create_cart_id
 
@@ -204,6 +206,13 @@ class BasePaymentProvider:
                      implementation.
         """
         places = settings.CURRENCY_PLACES.get(self.event.currency, 2)
+
+        if not self.settings.get('_hidden_seed'):
+            self.settings.set('_hidden_seed', get_random_string(64))
+        hidden_url = build_absolute_uri(self.event, 'presale:event.payment.unlock', kwargs={
+            'hash': hashlib.sha256((self.settings._hidden_seed + self.event.slug).encode()).hexdigest(),
+        })
+
         d = OrderedDict([
             ('_enabled',
              forms.BooleanField(
@@ -297,7 +306,30 @@ class BasePaymentProvider:
                  widget=forms.CheckboxSelectMultiple,
                  help_text=_(
                      'Only allow the usage of this payment provider in the following sales channels'),
-             ))
+             )),
+            ('_hidden',
+             forms.BooleanField(
+                 label=_('Hide payment method'),
+                 required=False,
+                 help_text=_(
+                     'The payment method will not be shown by default but only to people who enter the shop through '
+                     'a special link.'
+                 ),
+             )),
+            ('_hidden_url',
+             forms.URLField(
+                 label=_('Link to enable payment method'),
+                 widget=forms.TextInput(attrs={
+                     'readonly': 'readonly',
+                     'data-display-dependency': '#id_%s_hidden' % self.settings.get_prefix(),
+                     'value': hidden_url,
+                 }),
+                 required=False,
+                 initial=hidden_url,
+                 help_text=_(
+                     'Share this link with customers who should use this payment method.'
+                 ),
+             )),
         ])
         d['_restricted_countries']._as_type = list
         d['_restrict_to_sales_channels']._as_type = list
@@ -378,28 +410,31 @@ class BasePaymentProvider:
         availability_date = self.settings.get('_availability_date', as_type=RelativeDateWrapper)
         if availability_date:
             if self.event.has_subevents and cart_id:
-                availability_date = min([
+                dates = [
                     availability_date.datetime(se).date()
                     for se in self.event.subevents.filter(
                         id__in=CartPosition.objects.filter(
                             cart_id=cart_id, event=self.event
                         ).values_list('subevent', flat=True)
                     )
-                ])
+                ]
+                availability_date = min(dates) if dates else None
             elif self.event.has_subevents and order:
-                availability_date = min([
+                dates = [
                     availability_date.datetime(se).date()
                     for se in self.event.subevents.filter(
                         id__in=order.positions.values_list('subevent', flat=True)
                     )
-                ])
+                ]
+                availability_date = min(dates) if dates else None
             elif self.event.has_subevents:
                 logger.error('Payment provider is not subevent-ready.')
                 return False
             else:
                 availability_date = availability_date.datetime(self.event).date()
 
-            return availability_date >= now_dt.astimezone(tz).date()
+            if availability_date:
+                return availability_date >= now_dt.astimezone(tz).date()
 
         return True
 
@@ -433,6 +468,11 @@ class BasePaymentProvider:
         if self.settings._total_min is not None:
             pricing = pricing and total >= Decimal(self.settings._total_min)
 
+        if self.settings.get('_hidden', as_type=bool):
+            hashes = request.session.get('pretix_unlock_hashes', [])
+            if hashlib.sha256((self.settings._hidden_seed + self.event.slug).encode()).hexdigest() not in hashes:
+                return False
+
         def get_invoice_address():
             if not hasattr(request, '_checkout_flow_invoice_address'):
                 cs = cart_session(request)
@@ -602,6 +642,9 @@ class BasePaymentProvider:
         if self.settings._total_min is not None and ps < Decimal(self.settings._total_min):
             return False
 
+        if self.settings.get('_hidden', as_type=bool):
+            return False
+
         restricted_countries = self.settings.get('_restricted_countries', as_type=list)
         if restricted_countries:
             try:
@@ -687,7 +730,7 @@ class BasePaymentProvider:
         On failure, you should raise a PaymentException.
         """
         payment.state = OrderPayment.PAYMENT_STATE_CANCELED
-        payment.save()
+        payment.save(update_fields=['state'])
 
     def execute_refund(self, refund: OrderRefund):
         """
@@ -721,6 +764,16 @@ class BasePaymentProvider:
         """
         return {}
 
+    def matching_id(self, payment: OrderPayment):
+        """
+        Will be called to get an ID for a matching this payment when comparing pretix records with records of an external
+        source. This should return the main transaction ID for your API.
+
+        :param payment: The payment in question.
+        :return: A string or None
+        """
+        return None
+
 
 class PaymentException(Exception):
     pass

src/pretix/base/pdf.py

@@ -1,7 +1,7 @@
 import copy
+import itertools
 import logging
 import os
-import re
 import subprocess
 import tempfile
 import uuid
@@ -9,14 +9,13 @@ from collections import OrderedDict
 from functools import partial
 from io import BytesIO
 
-import bleach
 from arabic_reshaper import ArabicReshaper
 from bidi.algorithm import get_display
 from django.conf import settings
 from django.contrib.staticfiles import finders
 from django.dispatch import receiver
 from django.utils.formats import date_format
-from django.utils.html import escape
+from django.utils.html import conditional_escape
 from django.utils.timezone import now
 from django.utils.translation import ugettext_lazy as _
 from PyPDF2 import PdfFileReader
@@ -64,32 +63,32 @@ DEFAULT_VARIABLES = OrderedDict((
     ("item", {
         "label": _("Product name"),
         "editor_sample": _("Sample product"),
-        "evaluate": lambda orderposition, order, event: escape(str(orderposition.item.name))
+        "evaluate": lambda orderposition, order, event: str(orderposition.item.name)
     }),
     ("variation", {
         "label": _("Variation name"),
         "editor_sample": _("Sample variation"),
-        "evaluate": lambda op, order, event: escape(str(op.variation) if op.variation else '')
+        "evaluate": lambda op, order, event: str(op.variation) if op.variation else ''
     }),
     ("item_description", {
         "label": _("Product description"),
         "editor_sample": _("Sample product description"),
-        "evaluate": lambda orderposition, order, event: escape(str(orderposition.item.description))
+        "evaluate": lambda orderposition, order, event: str(orderposition.item.description)
     }),
     ("itemvar", {
         "label": _("Product name and variation"),
         "editor_sample": _("Sample product – sample variation"),
-        "evaluate": lambda orderposition, order, event: escape((
+        "evaluate": lambda orderposition, order, event: (
             '{} - {}'.format(orderposition.item.name, orderposition.variation)
             if orderposition.variation else str(orderposition.item.name)
-        ))
+        )
     }),
     ("item_category", {
         "label": _("Product category"),
         "editor_sample": _("Ticket category"),
-        "evaluate": lambda orderposition, order, event: escape((
+        "evaluate": lambda orderposition, order, event: (
             str(orderposition.item.category.name) if orderposition.item.category else ""
-        ))
+        )
     }),
     ("price", {
         "label": _("Price"),
@@ -108,12 +107,12 @@ DEFAULT_VARIABLES = OrderedDict((
     ("attendee_name", {
         "label": _("Attendee name"),
         "editor_sample": _("John Doe"),
-        "evaluate": lambda op, order, ev: escape(op.attendee_name or (op.addon_to.attendee_name if op.addon_to else ''))
+        "evaluate": lambda op, order, ev: op.attendee_name or (op.addon_to.attendee_name if op.addon_to else '')
     }),
     ("event_name", {
         "label": _("Event name"),
         "editor_sample": _("Sample event name"),
-        "evaluate": lambda op, order, ev: escape(str(ev.name))
+        "evaluate": lambda op, order, ev: str(ev.name)
     }),
     ("event_date", {
         "label": _("Event date"),
@@ -189,27 +188,27 @@ DEFAULT_VARIABLES = OrderedDict((
     ("event_location", {
         "label": _("Event location"),
         "editor_sample": _("Random City"),
-        "evaluate": lambda op, order, ev: str(ev.location).replace("\n", "<br/>\n")
+        "evaluate": lambda op, order, ev: str(ev.location)
     }),
     ("invoice_name", {
         "label": _("Invoice address name"),
         "editor_sample": _("John Doe"),
-        "evaluate": lambda op, order, ev: escape(order.invoice_address.name if getattr(order, 'invoice_address', None) else '')
+        "evaluate": lambda op, order, ev: order.invoice_address.name if getattr(order, 'invoice_address', None) else ''
     }),
     ("invoice_company", {
         "label": _("Invoice address company"),
         "editor_sample": _("Sample company"),
-        "evaluate": lambda op, order, ev: escape(order.invoice_address.company if getattr(order, 'invoice_address', None) else '')
+        "evaluate": lambda op, order, ev: order.invoice_address.company if getattr(order, 'invoice_address', None) else ''
     }),
     ("invoice_city", {
         "label": _("Invoice address city"),
         "editor_sample": _("Sample city"),
-        "evaluate": lambda op, order, ev: escape(order.invoice_address.city if getattr(order, 'invoice_address', None) else '')
+        "evaluate": lambda op, order, ev: order.invoice_address.city if getattr(order, 'invoice_address', None) else ''
     }),
     ("addons", {
         "label": _("List of Add-Ons"),
         "editor_sample": _("Addon 1\nAddon 2"),
-        "evaluate": lambda op, order, ev: "<br/>".join([
+        "evaluate": lambda op, order, ev: "\n".join([
             '{} - {}'.format(p.item, p.variation) if p.variation else str(p.item)
             for p in (
                 op.addons.all() if 'addons' in getattr(op, '_prefetched_objects_cache', {})
@@ -221,7 +220,7 @@ DEFAULT_VARIABLES = OrderedDict((
     ("organizer", {
         "label": _("Organizer name"),
         "editor_sample": _("Event organizer company"),
-        "evaluate": lambda op, order, ev: escape(str(order.event.organizer.name))
+        "evaluate": lambda op, order, ev: str(order.event.organizer.name)
     }),
     ("organizer_info_text", {
         "label": _("Organizer info text"),
@@ -301,7 +300,7 @@ def variables_from_questions(sender, *args, **kwargs):
         if not a:
             return ""
         else:
-            return escape(str(a)).replace("\n", "<br/>\n")
+            return str(a)
 
     d = {}
     for q in sender.questions.all():
@@ -314,11 +313,13 @@ def variables_from_questions(sender, *args, **kwargs):
 
 
 def _get_attendee_name_part(key, op, order, ev):
-    return escape(op.attendee_name_parts.get(key, ''))
+    if isinstance(key, tuple):
+        return ' '.join(p for p in [_get_attendee_name_part(c[0], op, order, ev) for c in key] if p)
+    return op.attendee_name_parts.get(key, '')
 
 
 def _get_ia_name_part(key, op, order, ev):
-    return escape(order.invoice_address.name_parts.get(key, '') if getattr(order, 'invoice_address', None) else '')
+    return order.invoice_address.name_parts.get(key, '') if getattr(order, 'invoice_address', None) else ''
 
 
 def get_variables(event):
@@ -331,6 +332,13 @@ def get_variables(event):
             'editor_sample': scheme['sample'][key],
             'evaluate': partial(_get_attendee_name_part, key)
         }
+    for i in range(2, len(scheme['fields']) + 1):
+        for comb in itertools.combinations(scheme['fields'], i):
+            v['attendee_name_%s' % ('_'.join(c[0] for c in comb))] = {
+                'label': _("Attendee name: {part}").format(part=' + '.join(str(c[1]) for c in comb)),
+                'editor_sample': ' '.join(str(scheme['sample'][c[0]]) for c in comb),
+                'evaluate': partial(_get_attendee_name_part, comb)
+            }
 
     v['invoice_name']['editor_sample'] = scheme['concatenation'](scheme['sample'])
     v['attendee_name']['editor_sample'] = scheme['concatenation'](scheme['sample'])
@@ -422,7 +430,9 @@ class Renderer:
         if not o['content']:
             return '(error)'
         if o['content'] == 'other':
-            return o['text'].replace("\n", "<br/>\n")
+            return o['text']
+        elif o['content'].startswith('itemmeta:'):
+            return op.item.meta_data.get(o['content'][9:]) or ''
         elif o['content'].startswith('meta:'):
             return ev.meta_data.get(o['content'][5:]) or ''
         elif o['content'] in self.variables:
@@ -454,13 +464,9 @@ class Renderer:
             textColor=Color(o['color'][0] / 255, o['color'][1] / 255, o['color'][2] / 255),
             alignment=align_map[o['align']]
         )
-        text = re.sub(
-            "<br[^>]*>", "<br/>",
-            bleach.clean(
-                self._get_text_content(op, order, o) or "",
-                tags=["br"], attributes={}, styles=[], strip=True
-            )
-        )
+        text = conditional_escape(
+            self._get_text_content(op, order, o) or "",
+        ).replace("\n", "<br/>\n")
 
         # reportlab does not support RTL, ligature-heavy scripts like Arabic. Therefore, we use ArabicReshaper
         # to resolve all ligatures and python-bidi to switch RTL texts.
@@ -488,7 +494,7 @@ class Renderer:
             p.drawOn(canvas, 0, -h - ad[1])
         canvas.restoreState()
 
-    def draw_page(self, canvas: Canvas, order: Order, op: OrderPosition):
+    def draw_page(self, canvas: Canvas, order: Order, op: OrderPosition, show_page=True):
         for o in self.layout:
             if o['type'] == "barcodearea":
                 self._draw_barcodearea(canvas, op, o)
@@ -498,7 +504,8 @@ class Renderer:
                 self._draw_poweredby(canvas, op, o)
             if self.bg_pdf:
                 canvas.setPageSize((self.bg_pdf.getPage(0).mediaBox[2], self.bg_pdf.getPage(0).mediaBox[3]))
-        canvas.showPage()
+        if show_page:
+            canvas.showPage()
 
     def render_background(self, buffer, title=_('Ticket')):
         if settings.PDFTK:

src/pretix/base/reldate.py

@@ -8,6 +8,7 @@ from django import forms
 from django.core.exceptions import ValidationError
 from django.db import models
 from django.utils.translation import ugettext_lazy as _
+from rest_framework import serializers
 
 BASE_CHOICES = (
     ('date_from', _('Event start')),
@@ -115,6 +116,8 @@ class RelativeDateWrapper:
                     base_date_name=parts[3],
                     time=time
                 )
+            if data.base_date_name not in [k[0] for k in BASE_CHOICES]:
+                raise ValueError('{} is not a valid base date'.format(data.base_date_name))
         else:
             data = parser.parse(input)
         return RelativeDateWrapper(data)
@@ -330,3 +333,39 @@ class ModelRelativeDateTimeField(models.CharField):
         defaults = {'form_class': self.form_class}
         defaults.update(kwargs)
         return super().formfield(**defaults)
+
+
+class SerializerRelativeDateField(serializers.CharField):
+
+    def to_internal_value(self, data):
+        if data is None:
+            return None
+        try:
+            r = RelativeDateWrapper.from_string(data)
+            if isinstance(r.data, RelativeDate):
+                if r.data.time is not None:
+                    raise ValidationError("Do not specify a time for a date field")
+            return r
+        except:
+            raise ValidationError("Invalid relative date")
+
+    def to_representation(self, value: RelativeDateWrapper):
+        if value is None:
+            return None
+        return value.to_string()
+
+
+class SerializerRelativeDateTimeField(serializers.CharField):
+
+    def to_internal_value(self, data):
+        if data is None:
+            return None
+        try:
+            return RelativeDateWrapper.from_string(data)
+        except:
+            raise ValidationError("Invalid relative date")
+
+    def to_representation(self, value: RelativeDateWrapper):
+        if value is None:
+            return None
+        return value.to_string()

src/pretix/base/services/cancelevent.py

@@ -0,0 +1,223 @@
+import logging
+from decimal import Decimal
+
+from django.db import transaction
+from django.db.models import (
+    Count, Exists, IntegerField, OuterRef, Subquery, Sum,
+)
+from i18nfield.strings import LazyI18nString
+
+from pretix.base.decimal import round_decimal
+from pretix.base.email import get_email_context
+from pretix.base.i18n import language
+from pretix.base.models import (
+    Event, InvoiceAddress, Order, OrderFee, OrderPosition, SubEvent, User,
+    WaitingListEntry,
+)
+from pretix.base.services.locking import LockTimeoutException
+from pretix.base.services.mail import SendMailException, TolerantDict, mail
+from pretix.base.services.orders import (
+    OrderChangeManager, OrderError, _cancel_order, _try_auto_refund,
+)
+from pretix.base.services.tasks import ProfiledEventTask
+from pretix.celery_app import app
+
+logger = logging.getLogger(__name__)
+
+
+def _send_wle_mail(wle: WaitingListEntry, subject: LazyI18nString, message: LazyI18nString, subevent: SubEvent):
+    with language(wle.locale):
+        email_context = get_email_context(event_or_subevent=subevent or wle.event, event=wle.event)
+        try:
+            mail(
+                wle.email,
+                str(subject).format_map(TolerantDict(email_context)),
+                message,
+                email_context,
+                wle.event,
+                locale=wle.locale
+            )
+        except SendMailException:
+            logger.exception('Waiting list canceled email could not be sent')
+
+
+def _send_mail(order: Order, subject: LazyI18nString, message: LazyI18nString, subevent: SubEvent,
+               refund_amount: Decimal, user: User, positions: list):
+    with language(order.locale):
+        try:
+            ia = order.invoice_address
+        except InvoiceAddress.DoesNotExist:
+            ia = InvoiceAddress()
+
+        email_context = get_email_context(event_or_subevent=subevent or order.event, refund_amount=refund_amount,
+                                          order=order, position_or_address=ia, event=order.event)
+        real_subject = str(subject).format_map(TolerantDict(email_context))
+        try:
+            order.send_mail(
+                real_subject, message, email_context,
+                'pretix.event.order.email.event_canceled',
+                user,
+            )
+        except SendMailException:
+            logger.exception('Order canceled email could not be sent')
+
+        for p in positions:
+            if subevent and p.subevent_id != subevent.id:
+                continue
+
+            if p.addon_to_id is None and p.attendee_email and p.attendee_email != order.email:
+                real_subject = str(subject).format_map(TolerantDict(email_context))
+                email_context = get_email_context(event_or_subevent=subevent or order.event,
+                                                  event=order.event,
+                                                  refund_amount=refund_amount,
+                                                  position_or_address=p,
+                                                  order=order, position=p)
+                try:
+                    order.send_mail(
+                        real_subject, message, email_context,
+                        'pretix.event.order.email.event_canceled',
+                        position=p,
+                        user=user
+                    )
+                except SendMailException:
+                    logger.exception('Order canceled email could not be sent to attendee')
+
+
+@app.task(base=ProfiledEventTask, bind=True, max_retries=5, default_retry_delay=1, throws=(OrderError,))
+def cancel_event(self, event: Event, subevent: int, auto_refund: bool, keep_fee_fixed: str,
+                 keep_fee_percentage: str, keep_fees: bool,
+                 send: bool, send_subject: dict, send_message: dict,
+                 send_waitinglist: bool=False, send_waitinglist_subject: dict={}, send_waitinglist_message: dict={},
+                 user: int=None):
+    send_subject = LazyI18nString(send_subject)
+    send_message = LazyI18nString(send_message)
+    send_waitinglist_subject = LazyI18nString(send_waitinglist_subject)
+    send_waitinglist_message = LazyI18nString(send_waitinglist_message)
+    if user:
+        user = User.objects.get(pk=user)
+
+    s = OrderPosition.objects.filter(
+        order=OuterRef('pk')
+    ).order_by().values('order').annotate(k=Count('id')).values('k')
+    orders_to_cancel = event.orders.annotate(pcnt=Subquery(s, output_field=IntegerField())).filter(
+        status__in=[Order.STATUS_PAID, Order.STATUS_PENDING, Order.STATUS_EXPIRED],
+        pcnt__gt=0
+    ).all()
+
+    if subevent:
+        subevent = event.subevents.get(pk=subevent)
+
+        has_subevent = OrderPosition.objects.filter(order_id=OuterRef('pk')).filter(
+            subevent=subevent
+        )
+        has_other_subevent = OrderPosition.objects.filter(order_id=OuterRef('pk')).exclude(
+            subevent=subevent
+        )
+        orders_to_change = orders_to_cancel.annotate(
+            has_subevent=Exists(has_subevent),
+            has_other_subevent=Exists(has_other_subevent),
+        ).filter(
+            has_subevent=True, has_other_subevent=True
+        )
+        orders_to_cancel = orders_to_cancel.annotate(
+            has_subevent=Exists(has_subevent),
+            has_other_subevent=Exists(has_other_subevent),
+        ).filter(
+            has_subevent=True, has_other_subevent=False
+        )
+
+        subevent.log_action(
+            'pretix.subevent.canceled', user=user,
+        )
+        subevent.active = False
+        subevent.save(update_fields=['active'])
+        subevent.log_action(
+            'pretix.subevent.changed', user=user, data={'active': False, '_source': 'cancel_event'}
+        )
+    else:
+        orders_to_change = event.orders.none()
+        event.log_action(
+            'pretix.event.canceled', user=user,
+        )
+
+        for i in event.items.filter(active=True):
+            i.active = False
+            i.save(update_fields=['active'])
+            i.log_action(
+                'pretix.event.item.changed', user=user, data={'active': False, '_source': 'cancel_event'}
+            )
+    failed = 0
+
+    for o in orders_to_cancel.only('id', 'total'):
+        try:
+            fee = Decimal('0.00')
+            if keep_fees:
+                fee += o.fees.filter(
+                    fee_type__in=(OrderFee.FEE_TYPE_PAYMENT, OrderFee.FEE_TYPE_SHIPPING, OrderFee.FEE_TYPE_SERVICE,
+                                  OrderFee.FEE_TYPE_CANCELLATION)
+                ).aggregate(
+                    s=Sum('value')
+                )['s'] or 0
+            if keep_fee_percentage:
+                fee += Decimal(keep_fee_percentage) / Decimal('100.00') * (o.total - fee)
+            if keep_fee_fixed:
+                fee += Decimal(keep_fee_fixed)
+            fee = round_decimal(min(fee, o.payment_refund_sum), event.currency)
+
+            _cancel_order(o.pk, user, send_mail=False, cancellation_fee=fee)
+            refund_amount = o.payment_refund_sum
+
+            if auto_refund:
+                _try_auto_refund(o.pk)
+
+            if send:
+                _send_mail(o, send_subject, send_message, subevent, refund_amount, user, o.positions.all())
+        except LockTimeoutException:
+            logger.exception("Could not cancel order")
+            failed += 1
+        except OrderError:
+            logger.exception("Could not cancel order")
+            failed += 1
+
+    for o in orders_to_change.values_list('id', flat=True):
+        with transaction.atomic():
+            o = event.orders.select_for_update().get(pk=o)
+            total = Decimal('0.00')
+            positions = []
+
+            ocm = OrderChangeManager(o, user=user, notify=False)
+            for p in o.positions.all():
+                if p.subevent == subevent:
+                    total += p.price
+                    ocm.cancel(p)
+                    positions.append(p)
+
+            fee = Decimal('0.00')
+            if keep_fee_fixed:
+                fee += Decimal(keep_fee_fixed)
+            if keep_fee_percentage:
+                fee += Decimal(keep_fee_percentage) / Decimal('100.00') * total
+            fee = round_decimal(min(fee, o.payment_refund_sum), event.currency)
+            if fee:
+                f = OrderFee(
+                    fee_type=OrderFee.FEE_TYPE_CANCELLATION,
+                    value=fee,
+                    order=o,
+                    tax_rule=o.event.settings.tax_rate_default,
+                )
+                f._calculate_tax()
+                ocm.add_fee(f)
+
+            ocm.commit()
+            refund_amount = o.payment_refund_sum - o.total
+
+            if auto_refund:
+                _try_auto_refund(o.pk)
+
+            if send:
+                _send_mail(o, send_subject, send_message, subevent, refund_amount, user, positions)
+
+    for wle in event.waitinglistentries.filter(subevent=subevent, voucher__isnull=True):
+        _send_wle_mail(wle, send_waitinglist_subject, send_waitinglist_message, subevent)
+
+    return failed

src/pretix/base/services/cart.py

@@ -303,32 +303,6 @@ class CartManager:
             if op.item.require_bundling and not op.addon_to == 'FAKE':
                 raise CartError(error_messages['bundled_only'])
 
-            if op.item.max_per_order or op.item.min_per_order:
-                new_total = (
-                    len([1 for p in self.positions if p.item_id == op.item.pk]) +
-                    sum([_op.count for _op in self._operations + current_ops
-                         if isinstance(_op, self.AddOperation) and _op.item == op.item]) +
-                    op.count -
-                    len([1 for _op in self._operations + current_ops
-                         if isinstance(_op, self.RemoveOperation) and _op.position.item_id == op.item.pk])
-                )
-
-            if op.item.max_per_order and new_total > op.item.max_per_order:
-                raise CartError(
-                    _(error_messages['max_items_per_product']) % {
-                        'max': op.item.max_per_order,
-                        'product': op.item.name
-                    }
-                )
-
-            if op.item.min_per_order and new_total < op.item.min_per_order:
-                raise CartError(
-                    _(error_messages['min_items_per_product']) % {
-                        'min': op.item.min_per_order,
-                        'product': op.item.name
-                    }
-                )
-
     def _get_price(self, item: Item, variation: Optional[ItemVariation],
                    voucher: Optional[Voucher], custom_price: Optional[Decimal],
                    subevent: Optional[SubEvent], cp_is_net: bool=None, force_custom_price=False,
@@ -787,37 +761,48 @@ class CartManager:
 
         return vouchers_ok
 
-    def _check_min_per_product(self):
-        per_product = Counter()
-        min_per_product = {}
+    def _check_min_max_per_product(self):
+        items = Counter()
         for p in self.positions:
-            per_product[p.item_id] += 1
-            min_per_product[p.item.pk] = p.item.min_per_order
-
+            items[p.item] += 1
         for op in self._operations:
             if isinstance(op, self.AddOperation):
-                per_product[op.item.pk] += op.count
-                min_per_product[op.item.pk] = op.item.min_per_order
+                items[op.item] += op.count
             elif isinstance(op, self.RemoveOperation):
-                per_product[op.position.item_id] -= 1
-                min_per_product[op.position.item.pk] = op.position.item.min_per_order
+                items[op.position.item] -= 1
 
         err = None
-        for itemid, num in per_product.items():
-            min_p = min_per_product[itemid]
-            if min_p and num < min_p:
+        for item, count in items.items():
+            if count == 0:
+                continue
+
+            if item.max_per_order and count > item.max_per_order:
+                raise CartError(
+                    _(error_messages['max_items_per_product']) % {
+                        'max': item.max_per_order,
+                        'product': item.name
+                    }
+                )
+
+            if item.min_per_order and count < item.min_per_order:
                 self._operations = [o for o in self._operations if not (
-                    isinstance(o, self.AddOperation) and o.item.pk == itemid
+                    isinstance(o, self.AddOperation) and o.item.pk == item.pk
                 )]
                 removals = [o.position.pk for o in self._operations if isinstance(o, self.RemoveOperation)]
                 for p in self.positions:
-                    if p.item_id == itemid and p.pk not in removals:
+                    if p.item_id == item.pk and p.pk not in removals:
                         self._operations.append(self.RemoveOperation(position=p))
                         err = _(error_messages['min_items_per_product_removed']) % {
-                            'min': min_p,
-                            'product': p.item.name
+                            'min': item.min_per_order,
+                            'product': item.name
                         }
-
+                if not err:
+                    raise CartError(
+                        _(error_messages['min_items_per_product']) % {
+                            'min': item.min_per_order,
+                            'product': item.name
+                        }
+                    )
         return err
 
     def _perform_operations(self):
@@ -826,7 +811,7 @@ class CartManager:
         err = None
         new_cart_positions = []
 
-        err = err or self._check_min_per_product()
+        err = err or self._check_min_max_per_product()
 
         self._operations.sort(key=lambda a: self.order[type(a)])
         seats_seen = set()

src/pretix/base/services/checkin.py

@@ -7,7 +7,7 @@ from django.utils.translation import ugettext as _
 from pretix.base.models import (
     Checkin, CheckinList, Order, OrderPosition, Question, QuestionOption,
 )
-from pretix.base.signals import order_placed
+from pretix.base.signals import checkin_created, order_placed
 
 
 class CheckInError(Exception):
@@ -143,6 +143,7 @@ def perform_checkin(op: OrderPosition, clist: CheckinList, given_answers: dict,
                 'datetime': dt,
                 'list': clist.pk
             }, user=user, auth=auth)
+            checkin_created.send(op.order.event, checkin=ci)
     else:
         if not force:
             raise CheckInError(
@@ -171,4 +172,5 @@ def order_placed(sender, **kwargs):
     for op in order.positions.all():
         for cl in cls:
             if cl.all_products or op.item_id in {i.pk for i in cl.limit_products.all()}:
-                Checkin.objects.create(position=op, list=cl, auto_checked_in=True)
+                ci = Checkin.objects.create(position=op, list=cl, auto_checked_in=True)
+                checkin_created.send(event, checkin=ci)

src/pretix/base/services/invoices.py

@@ -37,6 +37,10 @@ logger = logging.getLogger(__name__)
 
 @transaction.atomic
 def build_invoice(invoice: Invoice) -> Invoice:
+    invoice.locale = invoice.event.settings.get('invoice_language', invoice.event.settings.locale)
+    if invoice.locale == '__user__':
+        invoice.locale = invoice.order.locale or invoice.event.settings.locale
+
     lp = invoice.order.payments.last()
 
     with language(invoice.locale):
@@ -85,6 +89,7 @@ def build_invoice(invoice: Invoice) -> Invoice:
                 ).split("\n") if a.strip()
             )
             invoice.internal_reference = ia.internal_reference
+            invoice.custom_field = ia.custom_field
             invoice.invoice_to_company = ia.company
             invoice.invoice_to_name = ia.name
             invoice.invoice_to_street = ia.street
@@ -249,17 +254,11 @@ def regenerate_invoice(invoice: Invoice):
 
 
 def generate_invoice(order: Order, trigger_pdf=True):
-    locale = order.event.settings.get('invoice_language', order.event.settings.locale)
-    if locale:
-        if locale == '__user__':
-            locale = order.locale or order.event.settings.locale
-
     invoice = Invoice(
         order=order,
         event=order.event,
         organizer=order.event.organizer,
         date=timezone.now().date(),
-        locale=locale
     )
     invoice = build_invoice(invoice)
     if trigger_pdf:
@@ -313,7 +312,7 @@ def build_preview_invoice_pdf(event):
 
     with rolledback_transaction(), language(locale):
         order = event.orders.create(status=Order.STATUS_PENDING, datetime=timezone.now(),
-                                    expires=timezone.now(), code="PREVIEW", total=119)
+                                    expires=timezone.now(), code="PREVIEW", total=100 * event.tax_rules.count())
         invoice = Invoice(
             order=order, event=event, invoice_no="PREVIEW",
             date=timezone.now().date(), locale=locale, organizer=event.organizer
@@ -351,7 +350,7 @@ def build_preview_invoice_pdf(event):
 
         if event.tax_rules.exists():
             for i, tr in enumerate(event.tax_rules.all()):
-                tax = tr.tax(Decimal('100.00'))
+                tax = tr.tax(Decimal('100.00'), base_price_is='gross')
                 InvoiceLine.objects.create(
                     invoice=invoice, description=_("Sample product {}").format(i + 1),
                     gross_value=tax.gross, tax_value=tax.tax,

src/pretix/base/services/mail.py

@@ -126,7 +126,7 @@ def mail(email: str, subject: str, template: Union[str, LazyI18nString],
         renderer = ClassicMailRenderer(None)
         content_plain = body_plain = render_mail(template, context)
         subject = str(subject).format_map(TolerantDict(context))
-        sender = sender or (event.settings.get('mail_from') if event else settings.MAIL_FROM)
+        sender = sender or (event.settings.get('mail_from') if event else settings.MAIL_FROM) or settings.MAIL_FROM
         if event:
             sender_name = event.settings.mail_from_name or str(event.name)
             sender = formataddr((sender_name, sender))

src/pretix/base/services/notifications.py

@@ -1,5 +1,6 @@
 from django.conf import settings
 from django.template.loader import get_template
+from django.utils.timezone import override
 from django_scopes import scope, scopes_disabled
 from inlinestyler.utils import inline_css
 
@@ -79,7 +80,7 @@ def send_notification(logentry_id: int, action_type: str, user_id: int, method:
         if not notification_type:
             return  # Ignore, e.g. plugin not active for this event
 
-        with language(user.locale):
+        with language(user.locale), override(logentry.event.timezone if logentry.event else user.timezone):
             notification = notification_type.build_notification(logentry)
 
             if method == "mail":

src/pretix/base/services/orderimport.py

@@ -43,7 +43,11 @@ def parse_csv(file, length=None):
     if '\r' in data and '\n' not in data:
         data = data.replace('\r', '\n')
 
-    dialect = csv.Sniffer().sniff(data.split("\n")[0], delimiters=";,.#:")
+    try:
+        dialect = csv.Sniffer().sniff(data.split("\n")[0], delimiters=";,.#:")
+    except csv.Error:
+        return None
+
     if dialect is None:
         return None
 

src/pretix/base/services/orders.py

@@ -11,6 +11,7 @@ from django.core.cache import cache
 from django.db import transaction
 from django.db.models import Exists, F, Max, Min, OuterRef, Q, Sum
 from django.db.models.functions import Coalesce, Greatest
+from django.db.transaction import get_connection
 from django.dispatch import receiver
 from django.utils.functional import cached_property
 from django.utils.timezone import make_aware, now
@@ -278,7 +279,7 @@ def _cancel_order(order, user=None, send_mail: bool=True, api_token=None, device
     """
     with transaction.atomic():
         if isinstance(order, int):
-            order = Order.objects.get(pk=order)
+            order = Order.objects.select_for_update().get(pk=order)
         if isinstance(user, int):
             user = User.objects.get(pk=user)
         if isinstance(api_token, int):
@@ -292,9 +293,10 @@ def _cancel_order(order, user=None, send_mail: bool=True, api_token=None, device
 
         if not order.cancel_allowed():
             raise OrderError(_('You cannot cancel this order.'))
-        i = order.invoices.filter(is_cancellation=False, refered__isnull=True).last()
-        if i:
-            generate_cancellation(i)
+        invoices = []
+        i = order.invoices.filter(is_cancellation=False).last()
+        if i and not i.refered.exists():
+            invoices.append(generate_cancellation(i))
 
         for position in order.positions.all():
             for gc in position.issued_gift_cards.all():
@@ -336,7 +338,7 @@ def _cancel_order(order, user=None, send_mail: bool=True, api_token=None, device
                 order.save(update_fields=['status', 'total'])
 
             if i:
-                generate_invoice(order)
+                invoices.append(generate_invoice(order))
         else:
             with order.event.lock():
                 order.status = Order.STATUS_CANCELED
@@ -357,7 +359,8 @@ def _cancel_order(order, user=None, send_mail: bool=True, api_token=None, device
                 try:
                     order.send_mail(
                         email_subject, email_template, email_context,
-                        'pretix.event.order.email.order_canceled', user
+                        'pretix.event.order.email.order_canceled', user,
+                        invoices=invoices if order.event.settings.invoice_email_attachment else []
                     )
                 except SendMailException:
                     logger.exception('Order canceled email could not be sent')
@@ -550,6 +553,8 @@ def _check_positions(event: Event, now_dt: datetime, positions: List[CartPositio
                 bprice = bundle.designated_price or 0
             except ItemBundle.DoesNotExist:
                 bprice = cp.price
+            except ItemBundle.MultipleObjectsReturned:
+                raise OrderError("Invalid product configuration (duplicate bundle)")
             price = get_price(cp.item, cp.variation, cp.voucher, bprice, cp.subevent, custom_price_is_net=False,
                               invoice_address=address, force_custom_price=True, max_discount=max_discount)
             pbv = get_price(cp.item, cp.variation, None, bprice, cp.subevent, custom_price_is_net=False,
@@ -1031,7 +1036,7 @@ def send_download_reminders(sender, **kwargs):
                                 logger.exception('Reminder email could not be sent to attendee')
 
 
-def notify_user_changed_order(order, user=None, auth=None):
+def notify_user_changed_order(order, user=None, auth=None, invoices=[]):
     with language(order.locale):
         email_template = order.event.settings.mail_text_order_changed
         email_context = get_email_context(event=order.event, order=order)
@@ -1039,7 +1044,7 @@ def notify_user_changed_order(order, user=None, auth=None):
         try:
             order.send_mail(
                 email_subject, email_template, email_context,
-                'pretix.event.order.email.order_changed', user, auth=auth
+                'pretix.event.order.email.order_changed', user, auth=auth, invoices=invoices,
             )
         except SendMailException:
             logger.exception('Order changed email could not be sent')
@@ -1072,6 +1077,7 @@ class OrderChangeManager:
     AddOperation = namedtuple('AddOperation', ('item', 'variation', 'price', 'addon_to', 'subevent', 'seat'))
     SplitOperation = namedtuple('SplitOperation', ('position',))
     FeeValueOperation = namedtuple('FeeValueOperation', ('fee', 'value'))
+    AddFeeOperation = namedtuple('AddFeeOperation', ('fee',))
     CancelFeeOperation = namedtuple('CancelFeeOperation', ('fee',))
     RegenerateSecretOperation = namedtuple('RegenerateSecretOperation', ('position',))
 
@@ -1089,6 +1095,7 @@ class OrderChangeManager:
         self._operations = []
         self.notify = notify
         self._invoice_dirty = False
+        self._invoices = []
 
     def change_item(self, position: OrderPosition, item: Item, variation: Optional[ItemVariation]):
         if (not variation and item.has_variations) or (variation and variation.item_id != item.pk):
@@ -1184,6 +1191,11 @@ class OrderChangeManager:
         self._operations.append(self.CancelFeeOperation(fee))
         self._invoice_dirty = True
 
+    def add_fee(self, fee: OrderFee):
+        self._totaldiff += fee.value
+        self._invoice_dirty = True
+        self._operations.append(self.AddFeeOperation(fee))
+
     def change_fee(self, fee: OrderFee, value: Decimal):
         value = (fee.tax_rule or TaxRule.zero()).tax(value, base_price_is='gross')
         self._totaldiff += value.gross - fee.value
@@ -1444,6 +1456,13 @@ class OrderChangeManager:
                             invoice_address=self._invoice_address
                         ).gross
                     )
+            elif isinstance(op, self.AddFeeOperation):
+                self.order.log_action('pretix.event.order.changed.addfee', user=self.user, auth=self.auth, data={
+                    'fee': op.fee.pk,
+                })
+                op.fee.order = self.order
+                op.fee._calculate_tax()
+                op.fee.save()
             elif isinstance(op, self.FeeValueOperation):
                 self.order.log_action('pretix.event.order.changed.feevalue', user=self.user, auth=self.auth, data={
                     'fee': op.fee.pk,
@@ -1705,8 +1724,9 @@ class OrderChangeManager:
     def _reissue_invoice(self):
         i = self.order.invoices.filter(is_cancellation=False).last()
         if self.reissue_invoice and i and self._invoice_dirty:
-            generate_cancellation(i)
-            generate_invoice(self.order)
+            self._invoices.append(generate_cancellation(i))
+            if invoice_qualified(self.order):
+                self._invoices.append(generate_invoice(self.order))
 
     def _check_complete_cancel(self):
         current = self.order.positions.count()
@@ -1752,9 +1772,15 @@ class OrderChangeManager:
         self._check_paid_to_free()
 
         if self.notify:
-            notify_user_changed_order(self.order, self.user, self.auth)
+            notify_user_changed_order(
+                self.order, self.user, self.auth,
+                self._invoices if self.event.settings.invoice_email_attachment else []
+            )
             if self.split_order:
-                notify_user_changed_order(self.split_order, self.user, self.auth)
+                notify_user_changed_order(
+                    self.split_order, self.user, self.auth,
+                    list(self.split_order.invoices.all()) if self.event.settings.invoice_email_attachment else []
+                )
 
         order_changed.send(self.order.event, order=self.order)
 
@@ -1790,6 +1816,61 @@ def perform_order(self, event: Event, payment_provider: str, positions: List[str
             raise OrderError(str(error_messages['busy']))
 
 
+def _try_auto_refund(order):
+    notify_admin = False
+    error = False
+    if isinstance(order, int):
+        order = Order.objects.get(pk=order)
+    refund_amount = order.pending_sum * -1
+    if refund_amount <= Decimal('0.00'):
+        return
+
+    proposals = order.propose_auto_refunds(refund_amount)
+    can_auto_refund = sum(proposals.values()) == refund_amount
+    if can_auto_refund:
+        for p, value in proposals.items():
+            with transaction.atomic():
+                r = order.refunds.create(
+                    payment=p,
+                    source=OrderRefund.REFUND_SOURCE_BUYER,
+                    state=OrderRefund.REFUND_STATE_CREATED,
+                    amount=value,
+                    provider=p.provider
+                )
+                order.log_action('pretix.event.order.refund.created', {
+                    'local_id': r.local_id,
+                    'provider': r.provider,
+                })
+
+            try:
+                r.payment_provider.execute_refund(r)
+            except PaymentException as e:
+                with transaction.atomic():
+                    r.state = OrderRefund.REFUND_STATE_FAILED
+                    r.save()
+                    order.log_action('pretix.event.order.refund.failed', {
+                        'local_id': r.local_id,
+                        'provider': r.provider,
+                        'error': str(e)
+                    })
+                error = True
+                notify_admin = True
+            else:
+                if r.state != OrderRefund.REFUND_STATE_DONE:
+                    notify_admin = True
+    elif refund_amount != Decimal('0.00'):
+        notify_admin = True
+
+    if notify_admin:
+        order.log_action('pretix.event.order.refund.requested')
+    if error:
+        raise OrderError(
+            _(
+                'There was an error while trying to send the money back to you. Please contact the event organizer '
+                'for further information.')
+        )
+
+
 @app.task(base=ProfiledTask, bind=True, max_retries=5, default_retry_delay=1, throws=(OrderError,))
 @scopes_disabled()
 def cancel_order(self, order: int, user: int=None, send_mail: bool=True, api_token=None, oauth_application=None,
@@ -1799,52 +1880,7 @@ def cancel_order(self, order: int, user: int=None, send_mail: bool=True, api_tok
             ret = _cancel_order(order, user, send_mail, api_token, device, oauth_application,
                                 cancellation_fee)
             if try_auto_refund:
-                notify_admin = False
-                error = False
-                order = Order.objects.get(pk=order)
-                refund_amount = order.pending_sum * -1
-                proposals = order.propose_auto_refunds(refund_amount)
-                can_auto_refund = sum(proposals.values()) == refund_amount
-                if can_auto_refund:
-                    for p, value in proposals.items():
-                        with transaction.atomic():
-                            r = order.refunds.create(
-                                payment=p,
-                                source=OrderRefund.REFUND_SOURCE_BUYER,
-                                state=OrderRefund.REFUND_STATE_CREATED,
-                                amount=value,
-                                provider=p.provider
-                            )
-                            order.log_action('pretix.event.order.refund.created', {
-                                'local_id': r.local_id,
-                                'provider': r.provider,
-                            })
-
-                        try:
-                            r.payment_provider.execute_refund(r)
-                        except PaymentException as e:
-                            with transaction.atomic():
-                                r.state = OrderRefund.REFUND_STATE_FAILED
-                                r.save()
-                                order.log_action('pretix.event.order.refund.failed', {
-                                    'local_id': r.local_id,
-                                    'provider': r.provider,
-                                    'error': str(e)
-                                })
-                            error = True
-                            notify_admin = True
-                        else:
-                            if r.state != OrderRefund.REFUND_STATE_DONE:
-                                notify_admin = True
-                elif refund_amount != Decimal('0.00'):
-                    notify_admin = True
-
-                if notify_admin:
-                    order.log_action('pretix.event.order.refund.requested')
-                if error:
-                    raise OrderError(
-                        _('There was an error while trying to send the money back to you. Please contact the event organizer for further information.')
-                    )
+                _try_auto_refund(order)
             return ret
         except LockTimeoutException:
             self.retry()
@@ -1854,6 +1890,9 @@ def cancel_order(self, order: int, user: int=None, send_mail: bool=True, api_tok
 
 def change_payment_provider(order: Order, payment_provider, amount=None, new_payment=None, create_log=True,
                             recreate_invoices=True):
+    if not get_connection().in_atomic_block:
+        raise Exception('change_payment_provider should only be called in atomic transaction!')
+
     oldtotal = order.total
     e = OrderPayment.objects.filter(fee=OuterRef('pk'), state__in=(OrderPayment.PAYMENT_STATE_CONFIRMED,
                                                                    OrderPayment.PAYMENT_STATE_REFUNDED))
@@ -1874,34 +1913,32 @@ def change_payment_provider(order: Order, payment_provider, amount=None, new_pay
     new_fee = payment_provider.calculate_fee(
         order.pending_sum - old_fee if amount is None else amount
     )
-    with transaction.atomic():
-        if new_fee:
-            fee.value = new_fee
-            fee.internal_type = payment_provider.identifier
-            fee._calculate_tax()
-            fee.save()
-        else:
-            if fee.pk:
-                fee.delete()
-            fee = None
+    if new_fee:
+        fee.value = new_fee
+        fee.internal_type = payment_provider.identifier
+        fee._calculate_tax()
+        fee.save()
+    else:
+        if fee.pk:
+            fee.delete()
+        fee = None
 
     open_payment = None
     if new_payment:
-        lp = order.payments.exclude(pk=new_payment.pk).last()
+        lp = order.payments.select_for_update().exclude(pk=new_payment.pk).last()
     else:
-        lp = order.payments.last()
-    if lp and lp.state not in (OrderPayment.PAYMENT_STATE_CONFIRMED, OrderPayment.PAYMENT_STATE_REFUNDED):
+        lp = order.payments.select_for_update().last()
+
+    if lp and lp.state in (OrderPayment.PAYMENT_STATE_PENDING, OrderPayment.PAYMENT_STATE_CREATED):
         open_payment = lp
 
-    if open_payment and open_payment.state in (OrderPayment.PAYMENT_STATE_PENDING,
-                                               OrderPayment.PAYMENT_STATE_CREATED):
+    if open_payment:
         try:
-            with transaction.atomic():
-                open_payment.payment_provider.cancel_payment(open_payment)
-                order.log_action('pretix.event.order.payment.canceled', {
-                    'local_id': open_payment.local_id,
-                    'provider': open_payment.provider,
-                })
+            open_payment.payment_provider.cancel_payment(open_payment)
+            order.log_action('pretix.event.order.payment.canceled', {
+                'local_id': open_payment.local_id,
+                'provider': open_payment.provider,
+            })
         except PaymentException as e:
             order.log_action(
                 'pretix.event.order.payment.canceled.failed',

src/pretix/base/services/seating.py

@@ -65,6 +65,8 @@ def generate_seats(event, subevent, plan, mapping):
                     update(seat, 'seat_number', ss.number),
                     update(seat, 'zone_name', ss.zone),
                     update(seat, 'sorting_rank', ss.sorting_rank),
+                    update(seat, 'row_label', ss.row_label),
+                    update(seat, 'seat_label', ss.seat_label),
                 ])
                 if updated:
                     seat.save()
@@ -78,6 +80,8 @@ def generate_seats(event, subevent, plan, mapping):
                     seat_number=ss.number,
                     zone_name=ss.zone,
                     sorting_rank=ss.sorting_rank,
+                    row_label=ss.row_label,
+                    seat_label=ss.seat_label,
                     product=p,
                 ))
 

src/pretix/base/services/waitinglist.py

@@ -42,6 +42,8 @@ def assign_automatically(event: Event, user_id: int=None, subevent_id: int=None)
                 continue
             if wle.subevent and not wle.subevent.presale_is_running:
                 continue
+            if not wle.item.active or (wle.variation and not wle.variation.active):
+                continue
 
             quotas = (wle.variation.quotas.filter(subevent=wle.subevent)
                       if wle.variation

src/pretix/base/signals.py

@@ -405,6 +405,17 @@ the deletion of the order.
 As with all event-plugin signals, the ``sender`` keyword argument will contain the event.
 """
 
+checkin_created = EventPluginSignal(
+    providing_args=["checkin"],
+)
+"""
+This signal is sent out every time a check-in is created (i.e. an order position is marked as
+checked in). It is not send if the position was already checked in and is force-checked-in a second time.
+The check-in object is given as the first argument
+
+As with all event-plugin signals, the ``sender`` keyword argument will contain the event.
+"""
+
 logentry_display = EventPluginSignal(
     providing_args=["logentry"]
 )
@@ -641,3 +652,27 @@ to define additional columns that can be read during import. You are expected to
 
 As with all event-plugin signals, the ``sender`` keyword argument will contain the event.
 """
+
+validate_event_settings = EventPluginSignal(
+    providing_args=["settings_dict"]
+)
+"""
+This signal is sent out if the user performs an update of event settings through the API or web interface.
+You are passed a ``settings_dict`` dictionary with the new state of the event settings object and are expected
+to raise a ``django.core.exceptions.ValidationError`` if the new state is not valid.
+You can not modify the dictionary. This is only recommended to use if you have multiple settings
+that can only be validated together. To validate individual settings, pass a validator to the
+serializer field instead.
+
+As with all event-plugin signals, the ``sender`` keyword argument will contain the event.
+"""
+
+api_event_settings_fields = EventPluginSignal(
+    providing_args=[]
+)
+"""
+This signal is sent out to collect serializable settings fields for the API. You are expected to
+return a dictionary mapping names of attributes in the settings store to DRF serializer field instances.
+
+As with all event-plugin signals, the ``sender`` keyword argument will contain the event.
+"""

src/pretix/base/templates/pretixbase/email/simple_logo.html

@@ -0,0 +1,275 @@
+{% load eventurl %}
+{% load i18n %}
+{% load thumb %}
+
+<!DOCTYPE html>
+<html>
+<head>
+    <meta charset="utf-8">
+    <meta name="viewport" content="width=device-width, user-scalable=false">
+    <style type="text/css">
+        body {
+            background-color: #eee;
+            background-position: top;
+            background-repeat: repeat-x;
+            font-family: "Open Sans", "OpenSans", "Helvetica Neue", Helvetica, Arial, sans-serif;
+            font-size: 14px;
+            line-height: 20px;
+            color: #333;
+            margin: 0;
+            padding-top: 20px;
+        }
+
+        table.layout > tr > td {
+            background-color: white;
+            padding: 0;
+        }
+
+        table.layout > tr > td.header {
+            padding: 0 20px;
+            text-align: center;
+        }
+
+        .header h2 {
+            margin-top: 20px;
+            margin-bottom: 10px;
+            font-size: 22px;
+            line-height: 26px;
+        }
+
+        .header h1 {
+            margin-top: 0;
+            margin-bottom: 20px;
+            font-size: 26px;
+            line-height: 30px;
+        }
+
+        .header h2 a, .header h1 a, .content h2 a, .content h3 a {
+            text-decoration: none;
+        }
+
+        .content h2, .content h3 {
+            margin-bottom: 20px;
+            margin-top: 10px;
+        }
+
+        a {
+            color: {{ color }};
+            font-weight: bold;
+        }
+
+        a:hover, a:focus {
+            color: {{ color }};
+            text-decoration: underline;
+        }
+
+        a:hover, a:active {
+            outline: 0;
+        }
+
+        p {
+            margin: 0 0 10px;
+
+            /* These are technically the same, but use both */
+            overflow-wrap: break-word;
+            word-wrap: break-word;
+
+            -ms-word-break: break-all;
+            /* This is the dangerous one in WebKit, as it breaks things wherever */
+            word-break: break-all;
+            /* Instead use this non-standard one: */
+            word-break: break-word;
+
+            /* Adds a hyphen where the word breaks, if supported (No Blink) */
+            -ms-hyphens: auto;
+            -moz-hyphens: auto;
+            -webkit-hyphens: auto;
+            hyphens: auto;
+        }
+        p:last-child {
+            margin-bottom: 0;
+        }
+
+        .footer {
+            padding: 10px;
+            text-align: center;
+            font-size: 12px;
+        }
+
+        .content {
+            padding: 0 18px;
+        }
+
+        ::selection {
+            background: {{ color }};
+            color: #FFF;
+        }
+
+        table.layout {
+            width: 100%;
+            max-width: 600px;
+            border-spacing: 0px;
+            border-collapse: separate;
+            margin: auto;
+        }
+
+        img.wide {
+            width: 100%;
+            height: auto;
+        }
+
+        .content table {
+            width: 100%;
+        }
+
+        .content table td {
+            vertical-align: top;
+            text-align: left;
+        }
+        table.layout > tr > td.containertd {
+            padding: 15px 0;
+        }
+
+        a.button {
+            display: inline-block;
+            padding: 10px 16px;
+            font-size: 14px;
+            line-height: 1.33333;
+            border: 1px solid #cccccc;
+            border-radius: 6px;
+            -webkit-border-radius: 6px;
+            -moz-border-radius: 6px;
+            margin: 5px;
+            text-decoration: none;
+            color: {{ color }};
+        }
+        {% if rtl %}
+            body {
+                direction: rtl;
+            }
+            .content table td {
+                text-align: right;
+            }
+        {% endif %}
+
+        {% block addcss %}{% endblock %}
+    </style>
+    <!--[if mso]>
+        <style type="text/css">
+        body, table, td {
+            font-family: "Open Sans", "OpenSans", "Helvetica Neue", Helvetica, Arial, sans-serif !important;
+        }
+        </style>
+    <![endif]-->
+</head>
+<body align="center">
+    <!--[if gte mso 9]>
+    <table width="100%"><tr><td align="center">
+    <table width="600"><tr><td align="center"
+    <![endif]-->
+    <table class="layout" width="600" border="0" cellspacing="0">
+        {% if event.settings.logo_image %}
+            <!--[if !mso]><!-- -->
+            <tr>
+                <td style="line-height: 0" align="center">
+                    {% if event.settings.logo_image|thumb:'5000x120'|first == '/' %}
+                        <img src="{{ site_url }}{{ event.settings.logo_image|thumb:'5000x120' }}" alt="{{ event.name }}"
+                             style="height: auto; max-width: 100%;" />
+                    {% else %}
+                        <img src="{{ event.settings.logo_image|thumb:'5000x120' }}" alt="{{ event.name }}"
+                             style="height: auto; max-width: 100%;" />
+                    {% endif %}
+                </td>
+            </tr>
+            <!--<![endif]-->
+        {% endif %}
+        <tr>
+            <td class="header" align="center">
+                <!--[if gte mso 9]>
+                    <table cellpadding="20"><tr><td align="center">
+                <![endif]-->
+                {% if event %}
+                    <h2><a href="{% abseventurl event "presale:event.index" %}" target="_blank">{{ event.name }}</a>
+                    </h2>
+                {% else %}
+                    <h2><a href="{{ site_url }}" target="_blank">{{ site }}</a></h2>
+                {% endif %}
+                {% block header %}
+                    <h1>{{ subject }}</h1>
+                {% endblock %}
+                <!--[if gte mso 9]>
+                    </td></tr></table>
+                <![endif]-->
+            </td>
+        </tr>
+        <tr>
+            <td class="containertd">
+                <!--[if gte mso 9]>
+                        <table cellpadding="20"><tr><td>
+                    <![endif]-->
+                <div class="content">
+                    {{ body|safe }}
+                </div>
+                <!--[if gte mso 9]>
+                        </td></tr></table>
+                    <![endif]-->
+            </td>
+        </tr>
+        {% if order %}
+            <tr>
+                <td class="order containertd">
+                    <!--[if gte mso 9]>
+                        <table cellpadding="20"><tr><td>
+                    <![endif]-->
+                    <div class="content">
+                        {% if position %}
+                            {% trans "You are receiving this email because someone signed you up for the following event:" %}<br>
+                            <strong>{% trans "Event:" %}</strong> {{ event.name }}<br>
+                            <strong>{% trans "Order code:" %}</strong> {{ order.code }}<br>
+                            <strong>{% trans "Order date:" %}</strong> {{ order.datetime|date:"SHORT_DATE_FORMAT" }}<br>
+                            <a href="{% abseventurl event "presale:event.order.position" order=order.code secret=position.web_secret position=position.positionid %}">
+                                {% trans "View registration details" %}
+                            </a>
+                        {% else %}
+                            {% trans "You are receiving this email because you placed an order for the following event:" %}<br>
+                            <strong>{% trans "Event:" %}</strong> {{ event.name }}<br>
+                            <strong>{% trans "Order code:" %}</strong> {{ order.code }}<br>
+                            <strong>{% trans "Order date:" %}</strong> {{ order.datetime|date:"SHORT_DATE_FORMAT" }}<br>
+                            <a href="{% abseventurl event "presale:event.order.open" hash=order.email_confirm_hash order=order.code secret=order.secret %}">
+                                {% trans "View order details" %}
+                            </a>
+                        {% endif %}
+                    </div>
+                    <!--[if gte mso 9]>
+                        </td></tr></table>
+                    <![endif]-->
+                </td>
+            </tr>
+        {% endif %}
+        {% if signature %}
+            <tr>
+                <td class="order containertd">
+                    <!--[if gte mso 9]>
+                        <table cellpadding="20"><tr><td>
+                    <![endif]-->
+                    <div class="content">
+                        {{ signature | safe }}
+                    </div>
+                    <!--[if gte mso 9]>
+                        </td></tr></table>
+                    <![endif]-->
+                </td>
+            </tr>
+        {% endif %}
+    </table>
+    <div class="footer">
+        {% include "pretixbase/email/email_footer.html" %}
+    </div>
+    <br/>
+    <br/>
+    <!--[if gte mso 9]>
+    </td></tr></table>
+    </td></tr></table>
+    <![endif]-->
+</body>
+</html>

src/pretix/base/templatetags/rich_text.py

@@ -12,19 +12,23 @@ from django.utils.safestring import mark_safe
 
 register = template.Library()
 
-ALLOWED_TAGS = [
+ALLOWED_TAGS_SNIPPET = [
     'a',
     'abbr',
     'acronym',
     'b',
-    'blockquote',
     'br',
     'code',
     'em',
     'i',
+    'strong',
+    'span',
+    # Update doc/user/markdown.rst if you change this!
+]
+ALLOWED_TAGS = ALLOWED_TAGS_SNIPPET + [
+    'blockquote',
     'li',
     'ol',
-    'strong',
     'ul',
     'p',
     'table',
@@ -34,7 +38,6 @@ ALLOWED_TAGS = [
     'td',
     'th',
     'div',
-    'span',
     'hr',
     'h1',
     'h2',
@@ -95,7 +98,8 @@ def markdown_compile_email(source):
     ), parse_email=True)
 
 
-def markdown_compile(source):
+def markdown_compile(source, snippet=False):
+    tags = ALLOWED_TAGS_SNIPPET if snippet else ALLOWED_TAGS
     return bleach.clean(
         markdown.markdown(
             source,
@@ -104,7 +108,8 @@ def markdown_compile(source):
                 'markdown.extensions.nl2br'
             ]
         ),
-        tags=ALLOWED_TAGS,
+        strip=snippet,
+        tags=tags,
         attributes=ALLOWED_ATTRIBUTES,
         protocols=ALLOWED_PROTOCOLS,
     )
@@ -122,3 +127,17 @@ def rich_text(text: str, **kwargs):
         parse_email=True
     )
     return mark_safe(body_md)
+
+
+@register.filter
+def rich_text_snippet(text: str, **kwargs):
+    """
+    Processes markdown and cleans HTML in a text input.
+    """
+    text = str(text)
+    body_md = bleach.linkify(
+        markdown_compile(text, snippet=True),
+        callbacks=DEFAULT_CALLBACKS + ([safelink_callback] if kwargs.get('safelinks', True) else [abslink_callback]),
+        parse_email=True
+    )
+    return mark_safe(body_md)

src/pretix/base/timeline.py

@@ -175,6 +175,11 @@ def timeline_for_event(event, subevent=None):
     for pprov in pprovs.values():
         if not pprov.settings.get('_enabled', as_type=bool):
             continue
+        try:
+            if not pprov.is_enabled:
+                continue
+        except:
+            pass
         availability_date = pprov.settings.get('_availability_date', as_type=RelativeDateWrapper)
         if availability_date:
             d = make_aware(datetime.combine(

src/pretix/base/views/tasks.py

@@ -23,7 +23,11 @@ class AsyncAction:
         if not isinstance(self.task, app.Task):
             raise TypeError('Method has no task attached')
 
-        res = self.task.apply_async(args=args, kwargs=kwargs)
+        try:
+            res = self.task.apply_async(args=args, kwargs=kwargs)
+        except ConnectionError:
+            # Task very likely not yet sent, due to redis restarting etc. Let's try once agan
+            res = self.task.apply_async(args=args, kwargs=kwargs)
 
         if 'ajax' in self.request.GET or 'ajax' in self.request.POST:
             data = self._return_ajax_result(res)
@@ -60,6 +64,14 @@ class AsyncAction:
                 res.get(timeout=timeout, propagate=False)
             except celery.exceptions.TimeoutError:
                 pass
+            except ConnectionError:
+                # Redis probably just restarted, let's just report not ready and retry next time
+                data = self._ajax_response_data()
+                data.update({
+                    'async_id': res.id,
+                    'ready': False
+                })
+                return data
 
         ready = res.ready()
         data = self._ajax_response_data()

src/pretix/control/forms/__init__.py

@@ -79,7 +79,7 @@ class ClearableBasenameFileInput(forms.ClearableFileInput):
 
         @property
         def is_img(self):
-            return any(self.file.name.endswith(e) for e in ('.jpg', '.jpeg', '.png', '.gif'))
+            return any(self.file.name.lower().endswith(e) for e in ('.jpg', '.jpeg', '.png', '.gif'))
 
         def __str__(self):
             return os.path.basename(self.file.name).split('.', 1)[-1]

src/pretix/control/forms/event.py

@@ -3,19 +3,15 @@ from urllib.parse import urlencode
 from django import forms
 from django.conf import settings
 from django.core.exceptions import ValidationError
-from django.core.validators import (
-    MaxValueValidator, MinValueValidator, RegexValidator, validate_email,
-)
+from django.core.validators import RegexValidator, validate_email
 from django.db.models import Q
 from django.forms import formset_factory
 from django.urls import reverse
 from django.utils.html import escape
 from django.utils.safestring import mark_safe
 from django.utils.timezone import get_current_timezone_name
-from django.utils.translation import (
-    pgettext, pgettext_lazy, ugettext_lazy as _,
-)
-from django_countries import Countries, countries
+from django.utils.translation import pgettext_lazy, ugettext_lazy as _
+from django_countries import Countries
 from django_countries.fields import LazyTypedChoiceField
 from i18nfield.forms import (
     I18nForm, I18nFormField, I18nFormSetMixin, I18nTextarea, I18nTextInput,
@@ -28,10 +24,12 @@ from pretix.base.forms import I18nModelForm, PlaceholderValidator, SettingsForm
 from pretix.base.models import Event, Organizer, TaxRule, Team
 from pretix.base.models.event import EventMetaValue, SubEvent
 from pretix.base.reldate import RelativeDateField, RelativeDateTimeField
-from pretix.base.settings import PERSON_NAME_SCHEMES, PERSON_NAME_TITLE_GROUPS
+from pretix.base.settings import (
+    PERSON_NAME_SCHEMES, PERSON_NAME_TITLE_GROUPS, validate_settings,
+)
 from pretix.control.forms import (
-    ExtFileField, FontSelect, MultipleLanguagesWidget, SingleLanguageWidget,
-    SlugWidget, SplitDateTimeField, SplitDateTimePickerWidget,
+    ExtFileField, FontSelect, MultipleLanguagesWidget, SlugWidget,
+    SplitDateTimeField, SplitDateTimePickerWidget,
 )
 from pretix.control.forms.widgets import Select2
 from pretix.multidomain.urlreverse import build_absolute_uri
@@ -340,94 +338,10 @@ class EventUpdateForm(I18nModelForm):
 
 
 class EventSettingsForm(SettingsForm):
-    show_date_to = forms.BooleanField(
-        label=_("Show event end date"),
-        help_text=_("If disabled, only event's start date will be displayed to the public."),
-        required=False
-    )
-    show_times = forms.BooleanField(
-        label=_("Show dates with time"),
-        help_text=_("If disabled, the event's start and end date will be displayed without the time of day."),
-        required=False
-    )
-    show_items_outside_presale_period = forms.BooleanField(
-        label=_("Show items outside presale period"),
-        help_text=_("Show item details before presale has started and after presale has ended"),
-        required=False
-    )
-    display_net_prices = forms.BooleanField(
-        label=_("Show net prices instead of gross prices in the product list (not recommended!)"),
-        help_text=_("Independent of your choice, the cart will show gross prices as this is the price that needs to be "
-                    "paid"),
-        required=False
-    )
-    presale_start_show_date = forms.BooleanField(
-        label=_("Show start date"),
-        help_text=_("Show the presale start date before presale has started."),
-        widget=forms.CheckboxInput,
-        required=False
-    )
-    last_order_modification_date = RelativeDateTimeField(
-        label=_('Last date of modifications'),
-        help_text=_("The last date users can modify details of their orders, such as attendee names or "
-                    "answers to questions. If you use the event series feature and an order contains tickets for "
-                    "multiple event dates, the earliest date will be used."),
-        required=False,
-    )
     timezone = forms.ChoiceField(
         choices=((a, a) for a in common_timezones),
         label=_("Event timezone"),
     )
-    locales = forms.MultipleChoiceField(
-        choices=settings.LANGUAGES,
-        widget=MultipleLanguagesWidget,
-        label=_("Available languages"),
-    )
-    locale = forms.ChoiceField(
-        choices=settings.LANGUAGES,
-        widget=SingleLanguageWidget,
-        label=_("Default language"),
-    )
-    show_quota_left = forms.BooleanField(
-        label=_("Show number of tickets left"),
-        help_text=_("Publicly show how many tickets of a certain type are still available."),
-        required=False
-    )
-    waiting_list_enabled = forms.BooleanField(
-        label=_("Enable waiting list"),
-        help_text=_("Once a ticket is sold out, people can add themselves to a waiting list. As soon as a ticket "
-                    "becomes available again, it will be reserved for the first person on the waiting list and this "
-                    "person will receive an email notification with a voucher that can be used to buy a ticket."),
-        required=False
-    )
-    waiting_list_hours = forms.IntegerField(
-        label=_("Waiting list response time"),
-        min_value=6,
-        help_text=_("If a ticket voucher is sent to a person on the waiting list, it has to be redeemed within this "
-                    "number of hours until it expires and can be re-assigned to the next person on the list."),
-        required=False,
-        widget=forms.NumberInput(),
-    )
-    waiting_list_auto = forms.BooleanField(
-        label=_("Automatic waiting list assignments"),
-        help_text=_("If ticket capacity becomes free, automatically create a voucher and send it to the first person "
-                    "on the waiting list for that product. If this is not active, mails will not be send automatically "
-                    "but you can send them manually via the control panel. If you disable the waiting list but keep "
-                    "this option enabled, tickets will still be sent out."),
-        required=False,
-        widget=forms.CheckboxInput(),
-    )
-    attendee_names_asked = forms.BooleanField(
-        label=_("Ask for attendee names"),
-        help_text=_("Ask for a name for all tickets which include admission to the event."),
-        required=False,
-    )
-    attendee_names_required = forms.BooleanField(
-        label=_("Require attendee names"),
-        help_text=_("Require customers to fill in the names of all attendees."),
-        required=False,
-        widget=forms.CheckboxInput(attrs={'data-checkbox-dependency': '#id_settings-attendee_names_asked'}),
-    )
     name_scheme = forms.ChoiceField(
         label=_("Name format"),
         help_text=_("This defines how pretix will ask for human names. Changing this after you already received "
@@ -440,89 +354,24 @@ class EventSettingsForm(SettingsForm):
                     "restrict the set of selectable titles."),
         required=False,
     )
-    attendee_emails_asked = forms.BooleanField(
-        label=_("Ask for email addresses per ticket"),
-        help_text=_("Normally, pretix asks for one email address per order and the order confirmation will be sent "
-                    "only to that email address. If you enable this option, the system will additionally ask for "
-                    "individual email addresses for every admission ticket. This might be useful if you want to "
-                    "obtain individual addresses for every attendee even in case of group orders. However, "
-                    "pretix will send the order confirmation by default only to the one primary email address, not to "
-                    "the per-attendee addresses. You can however enable this in the E-mail settings."),
-        required=False
-    )
-    attendee_emails_required = forms.BooleanField(
-        label=_("Require email addresses per ticket"),
-        help_text=_("Require customers to fill in individual e-mail addresses for all admission tickets. See the "
-                    "above option for more details. One email address for the order confirmation will always be "
-                    "required regardless of this setting."),
-        required=False,
-        widget=forms.CheckboxInput(attrs={'data-checkbox-dependency': '#id_settings-attendee_emails_asked'}),
-    )
-    order_email_asked_twice = forms.BooleanField(
-        label=_("Ask for the order email address twice"),
-        help_text=_("Require customers to fill in the primary email address twice to avoid errors."),
-        required=False,
-    )
-    max_items_per_order = forms.IntegerField(
-        min_value=1,
-        label=_("Maximum number of items per order"),
-        help_text=_("Add-on products will not be counted.")
-    )
-    reservation_time = forms.IntegerField(
-        min_value=0,
-        label=_("Reservation period"),
-        help_text=_("The number of minutes the items in a user's cart are reserved for this user."),
-    )
-    imprint_url = forms.URLField(
-        label=_("Imprint URL"),
-        help_text=_("This should point e.g. to a part of your website that has your contact details and legal "
-                    "information."),
-        required=False,
-    )
-    confirm_text = I18nFormField(
-        label=_('Confirmation text'),
-        help_text=_('This text needs to be confirmed by the user before a purchase is possible. You could for example '
-                    'link your terms of service here. If you use the Pages feature to publish your terms of service, '
-                    'you don\'t need this setting since you can configure it there.'),
-        required=False,
-        widget=I18nTextarea
-    )
-    contact_mail = forms.EmailField(
-        label=_("Contact address"),
-        required=False,
-        help_text=_("We'll show this publicly to allow attendees to contact you.")
-    )
-    show_variations_expanded = forms.BooleanField(
-        label=_("Show variations of a product expanded by default"),
-        required=False
-    )
-    hide_sold_out = forms.BooleanField(
-        label=_("Hide all products that are sold out"),
-        required=False
-    )
-    meta_noindex = forms.BooleanField(
-        label=_('Ask search engines not to index the ticket shop'),
-        required=False
-    )
-    redirect_to_checkout_directly = forms.BooleanField(
-        label=_('Directly redirect to check-out after a product has been added to the cart.'),
-        required=False
-    )
-    frontpage_subevent_ordering = forms.ChoiceField(
-        label=pgettext('subevent', 'Date ordering'),
-        choices=[
-            ('date_ascending', _('Event start time')),
-            ('date_descending', _('Event start time (descending)')),
-            ('name_ascending', _('Name')),
-            ('name_descending', _('Name (descending)')),
-        ],  # When adding a new ordering, remember to also define it in the event model
-    )
     logo_image = ExtFileField(
-        label=_('Logo image'),
+        label=_('Header image'),
         ext_whitelist=(".png", ".jpg", ".gif", ".jpeg"),
         required=False,
-        help_text=_('If you provide a logo image, we will by default not show your events name and date '
-                    'in the page header. We will show your logo with a maximal height of 120 pixels.')
+        help_text=_('If you provide a logo image, we will by default not show your event name and date '
+                    'in the page header. By default, we show your logo with a size of up to 1140x120 pixels. You '
+                    'can increase the size with the setting below. We recommend not using small details on the picture '
+                    'as it will be resized on smaller screens.')
+    )
+    logo_image_large = forms.BooleanField(
+        label=_('Use header image in its full size'),
+        help_text=_('We recommend to upload a picture at least 1170 pixels wide.'),
+        required=False,
+    )
+    logo_show_title = forms.BooleanField(
+        label=_('Show event title even if a header image is present'),
+        help_text=_('The title will only be shown on the event front page.'),
+        required=False,
     )
     og_image = ExtFileField(
         label=_('Social media image'),
@@ -533,33 +382,6 @@ class EventSettingsForm(SettingsForm):
                     'WhatsApp and Reddit only show a square preview, so we recommend to make sure it still looks good '
                     'only the center square is shown. If you do not fill this, we will use the logo given above.')
     )
-    frontpage_text = I18nFormField(
-        label=_("Frontpage text"),
-        required=False,
-        widget=I18nTextarea
-    )
-    checkout_email_helptext = I18nFormField(
-        label=_("Help text of the email field"),
-        required=False,
-        widget_kwargs={'attrs': {'rows': '2'}},
-        widget=I18nTextarea
-    )
-    presale_has_ended_text = I18nFormField(
-        label=_("End of presale text"),
-        required=False,
-        widget=I18nTextarea,
-        widget_kwargs={'attrs': {'rows': '2'}},
-        help_text=_("This text will be shown above the ticket shop once the designated sales timeframe for this event "
-                    "is over. You can use it to describe other options to get a ticket, such as a box office.")
-    )
-    voucher_explanation_text = I18nFormField(
-        label=_("Voucher explanation"),
-        required=False,
-        widget=I18nTextarea,
-        widget_kwargs={'attrs': {'rows': '2'}},
-        help_text=_("This text will be shown next to the input for a voucher code. You can use it e.g. to explain "
-                    "how to obtain a voucher code.")
-    )
     primary_color = forms.CharField(
         label=_("Primary color"),
         required=False,
@@ -589,6 +411,20 @@ class EventSettingsForm(SettingsForm):
         ],
         widget=forms.TextInput(attrs={'class': 'colorpickerfield'})
     )
+    theme_color_background = forms.CharField(
+        label=_("Page background color"),
+        required=False,
+        validators=[
+            RegexValidator(regex='^#[0-9a-fA-F]{6}$',
+                           message=_('Please enter the hexadecimal code of a color, e.g. #990000.')),
+
+        ],
+        widget=forms.TextInput(attrs={'class': 'colorpickerfield no-contrast'})
+    )
+    theme_round_borders = forms.BooleanField(
+        label=_("Use round edges"),
+        required=False,
+    )
     primary_font = forms.ChoiceField(
         label=_('Font'),
         choices=[
@@ -598,24 +434,49 @@ class EventSettingsForm(SettingsForm):
         help_text=_('Only respected by modern browsers.')
     )
 
+    auto_fields = [
+        'imprint_url',
+        'checkout_email_helptext',
+        'presale_has_ended_text',
+        'voucher_explanation_text',
+        'show_date_to',
+        'show_times',
+        'show_items_outside_presale_period',
+        'display_net_prices',
+        'presale_start_show_date',
+        'locales',
+        'locale',
+        'show_quota_left',
+        'waiting_list_enabled',
+        'waiting_list_hours',
+        'waiting_list_auto',
+        'max_items_per_order',
+        'reservation_time',
+        'contact_mail',
+        'show_variations_expanded',
+        'hide_sold_out',
+        'meta_noindex',
+        'redirect_to_checkout_directly',
+        'frontpage_subevent_ordering',
+        'frontpage_text',
+        'attendee_names_asked',
+        'attendee_names_required',
+        'attendee_emails_asked',
+        'attendee_emails_required',
+        'confirm_text',
+        'order_email_asked_twice',
+        'last_order_modification_date',
+    ]
+
     def clean(self):
         data = super().clean()
-        if 'locales' in data and data['locale'] not in data['locales']:
-            raise ValidationError({
-                'locale': _('Your default locale must also be enabled for your event (see box above).')
-            })
-        if data['attendee_names_required'] and not data['attendee_names_asked']:
-            raise ValidationError({
-                'attendee_names_required': _('You cannot require specifying attendee names if you do not ask for them.')
-            })
-        if data['attendee_emails_required'] and not data['attendee_emails_asked']:
-            raise ValidationError({
-                'attendee_emails_required': _('You have to ask for attendee emails if you want to make them required.')
-            })
+        settings_dict = self.event.settings.freeze()
+        settings_dict.update(data)
+        validate_settings(self.event, data)
         return data
 
     def __init__(self, *args, **kwargs):
-        event = kwargs['obj']
+        self.event = kwargs['obj']
         super().__init__(*args, **kwargs)
         self.fields['confirm_text'].widget.attrs['rows'] = '3'
         self.fields['confirm_text'].widget.attrs['placeholder'] = _(
@@ -636,85 +497,34 @@ class EventSettingsForm(SettingsForm):
             ))
             for k, v in PERSON_NAME_TITLE_GROUPS.items()
         ]
-        if not event.has_subevents:
+        if not self.event.has_subevents:
             del self.fields['frontpage_subevent_ordering']
         self.fields['primary_font'].choices += [
-            (a, a) for a in get_fonts()
+            (a, {"title": a, "data": v}) for a, v in get_fonts().items()
         ]
 
 
 class CancelSettingsForm(SettingsForm):
-    cancel_allow_user = forms.BooleanField(
-        label=_("Customers can cancel their unpaid orders"),
-        required=False
-    )
-    cancel_allow_user_until = RelativeDateTimeField(
-        label=_("Do not allow cancellations after"),
-        required=False
-    )
-    cancel_allow_user_paid = forms.BooleanField(
-        label=_("Customers can cancel their paid orders"),
-        help_text=_("Paid money will be automatically paid back if the payment method allows it. "
-                    "Otherwise, a manual refund will be created for you to process manually."),
-        required=False
-    )
-    cancel_allow_user_paid_keep = forms.DecimalField(
-        label=_("Keep a fixed cancellation fee"),
-        required=False
-    )
-    cancel_allow_user_paid_keep_fees = forms.BooleanField(
-        label=_("Keep payment, shipping and service fees"),
-        required=False
-    )
-    cancel_allow_user_paid_keep_percentage = forms.DecimalField(
-        label=_("Keep a percentual cancellation fee"),
-        required=False
-    )
-    cancel_allow_user_paid_until = RelativeDateTimeField(
-        label=_("Do not allow cancellations after"),
-        required=False
-    )
+    auto_fields = [
+        'cancel_allow_user',
+        'cancel_allow_user_until',
+        'cancel_allow_user_paid',
+        'cancel_allow_user_paid_until',
+        'cancel_allow_user_paid_keep',
+        'cancel_allow_user_paid_keep_fees',
+        'cancel_allow_user_paid_keep_percentage',
+    ]
 
 
 class PaymentSettingsForm(SettingsForm):
-    payment_term_days = forms.IntegerField(
-        label=_('Payment term in days'),
-        help_text=_("The number of days after placing an order the user has to pay to preserve their reservation. If "
-                    "you use slow payment methods like bank transfer, we recommend 14 days. If you only use real-time "
-                    "payment methods, we recommend still setting two or three days to allow people to retry failed "
-                    "payments."),
-        validators=[MinValueValidator(0),
-                    MaxValueValidator(1000000)]
-
-    )
-    payment_term_last = RelativeDateField(
-        label=_('Last date of payments'),
-        help_text=_("The last date any payments are accepted. This has precedence over the number of "
-                    "days configured above. If you use the event series feature and an order contains tickets for "
-                    "multiple dates, the earliest date will be used."),
-        required=False,
-    )
-    payment_term_weekdays = forms.BooleanField(
-        label=_('Only end payment terms on weekdays'),
-        help_text=_("If this is activated and the payment term of any order ends on a Saturday or Sunday, it will be "
-                    "moved to the next Monday instead. This is required in some countries by civil law. This will "
-                    "not effect the last date of payments configured above."),
-        required=False,
-    )
-    payment_term_expire_automatically = forms.BooleanField(
-        label=_('Automatically expire unpaid orders'),
-        help_text=_("If checked, all unpaid orders will automatically go from 'pending' to 'expired' "
-                    "after the end of their payment deadline. This means that those tickets go back to "
-                    "the pool and can be ordered by other people."),
-        required=False
-    )
-    payment_term_accept_late = forms.BooleanField(
-        label=_('Accept late payments'),
-        help_text=_("Accept payments for orders even when they are in 'expired' state as long as enough "
-                    "capacity is available. No payments will ever be accepted after the 'Last date of payments' "
-                    "configured above."),
-        required=False
-    )
+    auto_fields = [
+        'payment_term_days',
+        'payment_term_last',
+        'payment_term_weekdays',
+        'payment_term_expire_automatically',
+        'payment_term_accept_late',
+        'payment_explanation',
+    ]
     tax_rate_default = forms.ModelChoiceField(
         queryset=TaxRule.objects.none(),
         label=_('Tax rule for payment fees'),
@@ -722,27 +532,13 @@ class PaymentSettingsForm(SettingsForm):
         help_text=_("The tax rule that applies for additional fees you configured for single payment methods. This "
                     "will set the tax rate and reverse charge rules, other settings of the tax rule are ignored.")
     )
-    payment_explanation = I18nFormField(
-        widget=I18nTextarea,
-        widget_kwargs={'attrs': {
-            'rows': 3,
-        }},
-        required=False,
-        label=_("Guidance text"),
-        help_text=_("This text will be shown above the payment options. You can explain the choices to the user here, "
-                    "if you want.")
-    )
 
     def clean(self):
-        cleaned_data = super().clean()
-        payment_term_last = cleaned_data.get('payment_term_last')
-        if payment_term_last and self.obj.presale_end:
-            if payment_term_last.date(self.obj) < self.obj.presale_end.date():
-                self.add_error(
-                    'payment_term_last',
-                    _('The last payment date cannot be before the end of presale.'),
-                )
-        return cleaned_data
+        data = super().clean()
+        settings_dict = self.obj.settings.freeze()
+        settings_dict.update(data)
+        validate_settings(self.obj, data)
+        return data
 
     def __init__(self, *args, **kwargs):
         super().__init__(*args, **kwargs)
@@ -790,90 +586,40 @@ class ProviderForm(SettingsForm):
 
 
 class InvoiceSettingsForm(SettingsForm):
-    allcountries = list(countries)
-    allcountries.insert(0, ('', _('Select country')))
 
-    invoice_address_asked = forms.BooleanField(
-        label=_("Ask for invoice address"),
-        required=False
-    )
-    invoice_address_required = forms.BooleanField(
-        label=_("Require invoice address"),
-        required=False,
-        widget=forms.CheckboxInput(attrs={'data-checkbox-dependency': '#id_invoice_address_asked'}),
-    )
-    invoice_address_company_required = forms.BooleanField(
-        label=_("Require a business addresses"),
-        help_text=_('This will require users to enter a company name.'),
-        required=False,
-        widget=forms.CheckboxInput(attrs={'data-checkbox-dependency': '#id_invoice_address_required'}),
-    )
-    invoice_name_required = forms.BooleanField(
-        label=_("Require customer name"),
-        required=False,
-    )
-    invoice_address_vatid = forms.BooleanField(
-        label=_("Ask for VAT ID"),
-        help_text=_("Does only work if an invoice address is asked for. VAT ID is not required."),
-        widget=forms.CheckboxInput(attrs={'data-checkbox-dependency': '#id_invoice_address_asked'}),
-        required=False
-    )
-    invoice_address_beneficiary = forms.BooleanField(
-        label=_("Ask for beneficiary"),
-        widget=forms.CheckboxInput(attrs={'data-checkbox-dependency': '#id_invoice_address_asked'}),
-        required=False
-    )
-    invoice_address_not_asked_free = forms.BooleanField(
-        label=_('Do not ask for invoice address if an order is free'),
-        required=False
-    )
-    invoice_include_free = forms.BooleanField(
-        label=_("Show free products on invoices"),
-        help_text=_("Note that invoices will never be generated for orders that contain only free "
-                    "products."),
-        required=False
-    )
-    invoice_address_explanation_text = I18nFormField(
-        label=_("Invoice address explanation"),
-        required=False,
-        widget=I18nTextarea,
-        widget_kwargs={'attrs': {'rows': '2'}},
-        help_text=_("This text will be shown above the invoice address form during checkout.")
-    )
-    invoice_numbers_consecutive = forms.BooleanField(
-        label=_("Generate invoices with consecutive numbers"),
-        help_text=_("If deactivated, the order code will be used in the invoice number."),
-        required=False
-    )
-    invoice_numbers_prefix = forms.CharField(
-        label=_("Invoice number prefix"),
-        help_text=_("This will be prepended to invoice numbers. If you leave this field empty, your event slug will "
-                    "be used followed by a dash. Attention: If multiple events within the same organization use the "
-                    "same value in this field, they will share their number range, i.e. every full number will be "
-                    "used at most once over all of your events. This setting only affects future invoices. You can "
-                    "use %Y (with century) %y (without century) to insert the year of the invoice, or %m and %d for "
-                    "the day of month."),
-        required=False,
-    )
-    invoice_numbers_prefix_cancellations = forms.CharField(
-        label=_("Invoice number prefix for cancellations"),
-        help_text=_("This will be prepended to invoice numbers of cancellations. If you leave this field empty, "
-                    "the same numbering scheme will be used that you configured for regular invoices."),
-        required=False,
-    )
-    invoice_generate = forms.ChoiceField(
-        label=_("Generate invoices"),
-        required=False,
-        widget=forms.RadioSelect,
-        choices=(
-            ('False', _('Do not generate invoices')),
-            ('admin', _('Only manually in admin panel')),
-            ('user', _('Automatically on user request')),
-            ('True', _('Automatically for all created orders')),
-            ('paid', _('Automatically on payment')),
-        ),
-        help_text=_("Invoices will never be automatically generated for free orders.")
-    )
+    auto_fields = [
+        'invoice_address_asked',
+        'invoice_address_required',
+        'invoice_address_vatid',
+        'invoice_address_company_required',
+        'invoice_address_beneficiary',
+        'invoice_address_custom_field',
+        'invoice_name_required',
+        'invoice_address_not_asked_free',
+        'invoice_include_free',
+        'invoice_show_payments',
+        'invoice_reissue_after_modify',
+        'invoice_generate',
+        'invoice_attendee_name',
+        'invoice_include_expire_date',
+        'invoice_numbers_consecutive',
+        'invoice_numbers_prefix',
+        'invoice_numbers_prefix_cancellations',
+        'invoice_address_explanation_text',
+        'invoice_email_attachment',
+        'invoice_address_from_name',
+        'invoice_address_from',
+        'invoice_address_from_zipcode',
+        'invoice_address_from_city',
+        'invoice_address_from_country',
+        'invoice_address_from_tax_id',
+        'invoice_address_from_vat_id',
+        'invoice_introductory_text',
+        'invoice_additional_text',
+        'invoice_footer_text',
+
+    ]
+
     invoice_generate_sales_channels = forms.MultipleChoiceField(
         label=_('Generate invoices for Sales channels'),
         choices=[],
@@ -881,105 +627,11 @@ class InvoiceSettingsForm(SettingsForm):
         help_text=_("If you have enabled invoice generation in the previous setting, you can limit it here to specific "
                     "sales channels.")
     )
-    invoice_attendee_name = forms.BooleanField(
-        label=_("Show attendee names on invoices"),
-        required=False
-    )
-    invoice_include_expire_date = forms.BooleanField(
-        label=_("Show expiration date of order"),
-        help_text=_("The expiration date will not be shown if the invoice is generated after the order is paid."),
-        required=False
-    )
-    invoice_email_attachment = forms.BooleanField(
-        label=_("Attach invoices to emails"),
-        help_text=_("If invoices are automatically generated for all orders, they will be attached to the order "
-                    "confirmation mail. If they are automatically generated on payment, they will be attached to the "
-                    "payment confirmation mail. If they are not automatically generated, they will not be attached "
-                    "to emails."),
-        required=False
-    )
     invoice_renderer = forms.ChoiceField(
         label=_("Invoice style"),
         required=True,
         choices=[]
     )
-    invoice_address_from_name = forms.CharField(
-        label=_("Company name"),
-        required=False,
-    )
-    invoice_address_from = forms.CharField(
-        label=_("Address line"),
-        widget=forms.Textarea(attrs={
-            'rows': 2,
-            'placeholder': _(
-                'Albert Einstein Road 52'
-            )
-        }),
-        required=False,
-    )
-    invoice_address_from_zipcode = forms.CharField(
-        widget=forms.TextInput(attrs={
-            'placeholder': '12345'
-        }),
-        required=False,
-        label=_("ZIP code"),
-    )
-    invoice_address_from_city = forms.CharField(
-        widget=forms.TextInput(attrs={
-            'placeholder': _('Random City')
-        }),
-        required=False,
-        label=_("City"),
-    )
-    invoice_address_from_country = forms.ChoiceField(
-        choices=allcountries,
-        required=False,
-        label=_("Country"),
-    )
-    invoice_address_from_tax_id = forms.CharField(
-        required=False,
-        label=_("Domestic tax ID"),
-    )
-    invoice_address_from_vat_id = forms.CharField(
-        required=False,
-        label=_("EU VAT ID"),
-    )
-    invoice_introductory_text = I18nFormField(
-        widget=I18nTextarea,
-        widget_kwargs={'attrs': {
-            'rows': 3,
-            'placeholder': _(
-                'e.g. With this document, we sent you the invoice for your ticket order.'
-            )
-        }},
-        required=False,
-        label=_("Introductory text"),
-        help_text=_("Will be printed on every invoice above the invoice rows.")
-    )
-    invoice_additional_text = I18nFormField(
-        widget=I18nTextarea,
-        widget_kwargs={'attrs': {
-            'rows': 3,
-            'placeholder': _(
-                'e.g. Thank you for your purchase! You can find more information on the event at ...'
-            )
-        }},
-        required=False,
-        label=_("Additional text"),
-        help_text=_("Will be printed on every invoice below the invoice total.")
-    )
-    invoice_footer_text = I18nFormField(
-        widget=I18nTextarea,
-        widget_kwargs={'attrs': {
-            'rows': 5,
-            'placeholder': _(
-                'e.g. your bank details, legal details like your VAT ID, registration numbers, etc.'
-            )
-        }},
-        required=False,
-        label=_("Footer"),
-        help_text=_("Will be printed centered and in a smaller font at the end of every invoice page.")
-    )
     invoice_language = forms.ChoiceField(
         widget=forms.Select, required=True,
         label=_("Invoice language"),
@@ -1009,6 +661,13 @@ class InvoiceSettingsForm(SettingsForm):
             (c.identifier, c.verbose_name) for c in get_all_sales_channels().values()
         )
 
+    def clean(self):
+        data = super().clean()
+        settings_dict = self.obj.settings.freeze()
+        settings_dict.update(data)
+        validate_settings(self.obj, data)
+        return data
+
 
 def multimail_validate(val):
     s = val.split(',')
@@ -1018,22 +677,13 @@ def multimail_validate(val):
 
 
 class MailSettingsForm(SettingsForm):
-    mail_prefix = forms.CharField(
-        label=_("Subject prefix"),
-        help_text=_("This will be prepended to the subject of all outgoing emails, formatted as [prefix]. "
-                    "Choose, for example, a short form of your event name."),
-        required=False
-    )
-    mail_from = forms.EmailField(
-        label=_("Sender address"),
-        help_text=_("Sender address for outgoing emails"),
-    )
-    mail_from_name = forms.CharField(
-        label=_("Sender name"),
-        help_text=_("Sender name used in conjunction with the sender address for outgoing emails. "
-                    "Defaults to your event name."),
-        required=False
-    )
+    auto_fields = [
+        'mail_prefix',
+        'mail_from',
+        'mail_from_name',
+        'mail_attach_ical',
+    ]
+
     mail_bcc = forms.CharField(
         label=_("Bcc address"),
         help_text=_("All emails will be sent to this address as a Bcc copy"),
@@ -1041,12 +691,6 @@ class MailSettingsForm(SettingsForm):
         required=False,
         max_length=255
     )
-    mail_attach_ical = forms.BooleanField(
-        label=_("Attach calendar files"),
-        help_text=_("If enabled, we will attach an .ics calendar file to order confirmation emails."),
-        required=False
-    )
-
     mail_text_signature = I18nFormField(
         label=_("Signature"),
         required=False,
@@ -1065,7 +709,6 @@ class MailSettingsForm(SettingsForm):
         required=True,
         choices=[]
     )
-
     mail_text_order_placed = I18nFormField(
         label=_("Text sent to order contact address"),
         required=False,
@@ -1301,30 +944,13 @@ class MailSettingsForm(SettingsForm):
 
 
 class TicketSettingsForm(SettingsForm):
-    ticket_download = forms.BooleanField(
-        label=_("Use feature"),
-        help_text=_("Use pretix to generate tickets for the user to download and print out."),
-        required=False
-    )
-    ticket_download_date = RelativeDateTimeField(
-        label=_("Download date"),
-        help_text=_("Ticket download will be offered after this date. If you use the event series feature and an order "
-                    "contains tickets for multiple event dates, download of all tickets will be available if at least "
-                    "one of the event dates allows it."),
-        required=False,
-    )
-    ticket_download_addons = forms.BooleanField(
-        label=_("Offer to download tickets separately for add-on products"),
-        required=False,
-    )
-    ticket_download_nonadm = forms.BooleanField(
-        label=_("Generate tickets for non-admission products"),
-        required=False,
-    )
-    ticket_download_pending = forms.BooleanField(
-        label=_("Offer to download tickets even before an order is paid"),
-        required=False,
-    )
+    auto_fields = [
+        'ticket_download',
+        'ticket_download_date',
+        'ticket_download_addons',
+        'ticket_download_nonadm',
+        'ticket_download_pending',
+    ]
 
     def prepare_fields(self):
         # See clean()
@@ -1603,3 +1229,11 @@ QuickSetupProductFormSet = formset_factory(
     formset=BaseQuickSetupProductFormSet,
     can_order=False, can_delete=True, extra=0
 )
+
+
+class ItemMetaPropertyForm(forms.ModelForm):
+    class Meta:
+        fields = ['name', 'default']
+        widgets = {
+            'default': forms.TextInput()
+        }

src/pretix/control/forms/filter.py

@@ -440,14 +440,25 @@ class SubEventFilterForm(FilterForm):
             ).filter(
                 Q(presale_start__isnull=True) | Q(presale_start__lte=now())
             ).filter(
-                Q(presale_end__isnull=True) | Q(presale_end__gte=now())
+                Q(Q(presale_end__isnull=True) & Q(
+                    Q(date_to__gte=now()) |
+                    Q(date_to__isnull=True, date_from__gte=now())
+                )) |
+                Q(presale_end__gte=now())
             )
         elif fdata.get('status') == 'inactive':
             qs = qs.filter(active=False)
         elif fdata.get('status') == 'future':
             qs = qs.filter(presale_start__gte=now())
         elif fdata.get('status') == 'past':
-            qs = qs.filter(presale_end__lte=now())
+            qs = qs.filter(
+                Q(presale_end__lte=now()) | Q(
+                    Q(presale_end__isnull=True) & Q(
+                        Q(date_to__lte=now()) |
+                        Q(date_to__isnull=True, date_from__gte=now())
+                    )
+                )
+            )
 
         if fdata.get('weekday'):
             qs = qs.annotate(wday=ExtractWeekDay('date_from')).filter(wday=fdata.get('weekday'))
@@ -474,6 +485,8 @@ class SubEventFilterForm(FilterForm):
 
         if fdata.get('ordering'):
             qs = qs.order_by(self.get_order_by())
+        else:
+            qs = qs.order_by('-date_from')
 
         return qs
 

src/pretix/control/forms/item.py

@@ -1,4 +1,5 @@
 from decimal import Decimal
+from urllib.parse import urlencode
 
 from django import forms
 from django.core.exceptions import ValidationError
@@ -18,7 +19,7 @@ from pretix.base.forms import I18nFormSet, I18nModelForm
 from pretix.base.models import (
     Item, ItemCategory, ItemVariation, Question, QuestionOption, Quota,
 )
-from pretix.base.models.items import ItemAddOn, ItemBundle
+from pretix.base.models.items import ItemAddOn, ItemBundle, ItemMetaValue
 from pretix.base.signals import item_copy_data
 from pretix.control.forms import SplitDateTimeField, SplitDateTimePickerWidget
 from pretix.control.forms.widgets import Select2
@@ -227,6 +228,18 @@ class ItemCreateForm(I18nModelForm):
         super().__init__(*args, **kwargs)
 
         self.fields['category'].queryset = self.instance.event.categories.all()
+        self.fields['category'].widget = Select2(
+            attrs={
+                'data-model-select2': 'generic',
+                'data-select2-url': reverse('control:event.items.categories.select2', kwargs={
+                    'event': self.instance.event.slug,
+                    'organizer': self.instance.event.organizer.slug,
+                }),
+                'data-placeholder': _('No category'),
+            }
+        )
+        self.fields['category'].widget.choices = self.fields['category'].choices
+
         self.fields['tax_rule'].queryset = self.instance.event.tax_rules.all()
         change_decimal_field(self.fields['default_price'], self.instance.event.currency)
         self.fields['tax_rule'].empty_label = _('No taxation')
@@ -399,7 +412,6 @@ class TicketNullBooleanSelect(forms.NullBooleanSelect):
 class ItemUpdateForm(I18nModelForm):
     def __init__(self, *args, **kwargs):
         super().__init__(*args, **kwargs)
-        self.fields['category'].queryset = self.instance.event.categories.all()
         self.fields['tax_rule'].queryset = self.instance.event.tax_rules.all()
         self.fields['description'].widget.attrs['placeholder'] = _(
             'e.g. This reduced price is available for full-time students, jobless and people '
@@ -431,6 +443,19 @@ class ItemUpdateForm(I18nModelForm):
         self.fields['hidden_if_available'].widget.choices = self.fields['hidden_if_available'].choices
         self.fields['hidden_if_available'].required = False
 
+        self.fields['category'].queryset = self.instance.event.categories.all()
+        self.fields['category'].widget = Select2(
+            attrs={
+                'data-model-select2': 'generic',
+                'data-select2-url': reverse('control:event.items.categories.select2', kwargs={
+                    'event': self.instance.event.slug,
+                    'organizer': self.instance.event.organizer.slug,
+                }),
+                'data-placeholder': _('No category'),
+            }
+        )
+        self.fields['category'].widget.choices = self.fields['category'].choices
+
     def clean(self):
         d = super().clean()
         if d['issue_giftcard']:
@@ -604,6 +629,16 @@ class ItemAddOnForm(I18nModelForm):
     def __init__(self, *args, **kwargs):
         super().__init__(*args, **kwargs)
         self.fields['addon_category'].queryset = self.event.categories.all()
+        self.fields['addon_category'].widget = Select2(
+            attrs={
+                'data-model-select2': 'generic',
+                'data-select2-url': reverse('control:event.items.categories.select2', kwargs={
+                    'event': self.event.slug,
+                    'organizer': self.event.organizer.slug,
+                }),
+            }
+        )
+        self.fields['addon_category'].widget.choices = self.fields['addon_category'].choices
 
     class Meta:
         model = ItemAddOn
@@ -649,6 +684,27 @@ class ItemBundleFormSet(I18nFormSet):
         self.add_fields(form, None)
         return form
 
+    def clean(self):
+        super().clean()
+        ivs = set()
+        for i in range(0, self.total_form_count()):
+            form = self.forms[i]
+            if self.can_delete:
+                if self._should_delete_form(form):
+                    # This form is going to be deleted so any of its errors
+                    # should not cause the entire formset to be invalid.
+                    try:
+                        ivs.remove(form.cleaned_data['itemvar'])
+                    except KeyError:
+                        pass
+                    continue
+
+            if 'itemvar' in form.cleaned_data:
+                if form.cleaned_data['itemvar'] in ivs:
+                    raise ValidationError(_('You added the same bundled product twice'))
+
+                ivs.add(form.cleaned_data['itemvar'])
+
 
 class ItemBundleForm(I18nModelForm):
     itemvar = forms.ChoiceField(label=_('Bundled product'))
@@ -689,7 +745,7 @@ class ItemBundleForm(I18nModelForm):
 
     def clean(self):
         d = super().clean()
-        if not self.cleaned_data['designated_price']:
+        if not self.cleaned_data.get('designated_price'):
             d['designated_price'] = Decimal('0.00')
             self.instance.designated_price = Decimal('0.00')
 
@@ -722,3 +778,27 @@ class ItemBundleForm(I18nModelForm):
             'count',
             'designated_price',
         ]
+
+
+class ItemMetaValueForm(forms.ModelForm):
+
+    def __init__(self, *args, **kwargs):
+        self.property = kwargs.pop('property')
+        super().__init__(*args, **kwargs)
+        self.fields['value'].required = False
+        self.fields['value'].widget.attrs['placeholder'] = self.property.default
+        self.fields['value'].widget.attrs['data-typeahead-url'] = (
+            reverse('control:event.items.meta.typeahead', kwargs={
+                'organizer': self.property.event.organizer.slug,
+                'event': self.property.event.slug
+            }) + '?' + urlencode({
+                'property': self.property.name,
+            })
+        )
+
+    class Meta:
+        model = ItemMetaValue
+        fields = ['value']
+        widgets = {
+            'value': forms.TextInput()
+        }

src/pretix/control/forms/orders.py

@@ -1,3 +1,4 @@
+from datetime import date, datetime, time
 from decimal import Decimal
 
 from django import forms
@@ -5,8 +6,12 @@ from django.conf import settings
 from django.core.exceptions import ValidationError
 from django.db import models
 from django.urls import reverse
-from django.utils.timezone import now
-from django.utils.translation import pgettext_lazy, ugettext_lazy as _
+from django.utils.timezone import make_aware, now
+from django.utils.translation import (
+    gettext_noop, pgettext_lazy, ugettext_lazy as _,
+)
+from i18nfield.forms import I18nFormField, I18nTextarea, I18nTextInput
+from i18nfield.strings import LazyI18nString
 
 from pretix.base.email import get_available_placeholders
 from pretix.base.forms import I18nModelForm, PlaceholderValidator
@@ -25,16 +30,17 @@ class ExtendForm(I18nModelForm):
                     'and you having sold more tickets than you planned!'),
         required=False
     )
+    expires = forms.DateField(
+        label=_("Expiration date"),
+        widget=forms.DateInput(attrs={
+            'class': 'datepickerfield',
+            'data-is-payment-date': 'true'
+        }),
+    )
 
     class Meta:
         model = Order
-        fields = ['expires']
-        widgets = {
-            'expires': forms.DateInput(attrs={
-                'class': 'datepickerfield',
-                'data-is-payment-date': 'true'
-            })
-        }
+        fields = []
 
     def __init__(self, *args, **kwargs):
         super().__init__(*args, **kwargs)
@@ -45,11 +51,22 @@ class ExtendForm(I18nModelForm):
 
     def clean(self):
         data = super().clean()
-        data['expires'] = data['expires'].replace(hour=23, minute=59, second=59)
-        if data['expires'] < now():
-            raise ValidationError(_('The new expiry date needs to be in the future.'))
+        if data.get('expires'):
+            if isinstance(data['expires'], date):
+                data['expires'] = make_aware(datetime.combine(
+                    data['expires'],
+                    time(hour=23, minute=59, second=59)
+                ), self.instance.event.timezone)
+            else:
+                data['expires'] = data['expires'].replace(hour=23, minute=59, second=59)
+            if data['expires'] < now():
+                raise ValidationError(_('The new expiry date needs to be in the future.'))
         return data
 
+    def save(self, commit=True):
+        self.instance.expires = self.cleaned_data['expires']
+        return super().save(commit)
+
 
 class ConfirmPaymentForm(forms.Form):
     force = forms.BooleanField(
@@ -501,3 +518,131 @@ class OrderRefundForm(forms.Form):
         if data.get('mode') == 'partial' and not data.get('partial_amount'):
             raise ValidationError(_('You need to specify an amount for a partial refund.'))
         return data
+
+
+class EventCancelForm(forms.Form):
+    subevent = forms.ModelChoiceField(
+        SubEvent.objects.none(),
+        label=pgettext_lazy('subevent', 'Date'),
+        required=True,
+        empty_label=None
+    )
+    auto_refund = forms.BooleanField(
+        label=_('Automatically refund money if possible'),
+        initial=True,
+        required=False
+    )
+    keep_fee_fixed = forms.DecimalField(
+        label=_("Keep a fixed cancellation fee"),
+        max_digits=10, decimal_places=2,
+        required=False
+    )
+    keep_fee_percentage = forms.DecimalField(
+        label=_("Keep a percentual cancellation fee"),
+        max_digits=10, decimal_places=2,
+        required=False
+    )
+    keep_fees = forms.BooleanField(
+        label=_("Keep payment, shipping and service fees"),
+        required=False,
+    )
+    send = forms.BooleanField(
+        label=_("Send information via email"),
+        required=False
+    )
+    send_subject = forms.CharField()
+    send_message = forms.CharField()
+    send_waitinglist = forms.BooleanField(
+        label=_("Send information to waiting list"),
+        required=False
+    )
+    send_waitinglist_subject = forms.CharField()
+    send_waitinglist_message = forms.CharField()
+
+    def _set_field_placeholders(self, fn, base_parameters):
+        phs = [
+            '{%s}' % p
+            for p in sorted(get_available_placeholders(self.event, base_parameters).keys())
+        ]
+        ht = _('Available placeholders: {list}').format(
+            list=', '.join(phs)
+        )
+        if self.fields[fn].help_text:
+            self.fields[fn].help_text += ' ' + str(ht)
+        else:
+            self.fields[fn].help_text = ht
+        self.fields[fn].validators.append(
+            PlaceholderValidator(phs)
+        )
+
+    def __init__(self, *args, **kwargs):
+        self.event = kwargs.pop('event')
+        super().__init__(*args, **kwargs)
+        self.fields['send_subject'] = I18nFormField(
+            label=_("Subject"),
+            required=True,
+            widget_kwargs={'attrs': {'data-display-dependency': '#id_send'}},
+            initial=_('Canceled: {event}'),
+            widget=I18nTextInput,
+            locales=self.event.settings.get('locales'),
+        )
+        self.fields['send_message'] = I18nFormField(
+            label=_('Message'),
+            widget=I18nTextarea,
+            required=True,
+            widget_kwargs={'attrs': {'data-display-dependency': '#id_send'}},
+            locales=self.event.settings.get('locales'),
+            initial=LazyI18nString.from_gettext(gettext_noop(
+                'Hello,\n\n'
+                'with this email, we regret to inform you that {event} has been canceled.\n\n'
+                'We will refund you {refund_amount} to your original payment method.\n\n'
+                'You can view the current state of your order here:\n\n{url}\n\nBest regards,\n\n'
+                'Your {event} team'
+            ))
+        )
+        self._set_field_placeholders('send_subject', ['event_or_subevent', 'refund_amount', 'position_or_address',
+                                                      'order', 'event'])
+        self._set_field_placeholders('send_message', ['event_or_subevent', 'refund_amount', 'position_or_address',
+                                                      'order', 'event'])
+        self.fields['send_waitinglist_subject'] = I18nFormField(
+            label=_("Subject"),
+            required=True,
+            initial=_('Canceled: {event}'),
+            widget=I18nTextInput,
+            widget_kwargs={'attrs': {'data-display-dependency': '#id_send_waitinglist'}},
+            locales=self.event.settings.get('locales'),
+        )
+        self.fields['send_waitinglist_message'] = I18nFormField(
+            label=_('Message'),
+            widget=I18nTextarea,
+            required=True,
+            locales=self.event.settings.get('locales'),
+            widget_kwargs={'attrs': {'data-display-dependency': '#id_send_waitinglist'}},
+            initial=LazyI18nString.from_gettext(gettext_noop(
+                'Hello,\n\n'
+                'with this email, we regret to inform you that {event} has been canceled.\n\n'
+                'You will therefore not receive a ticket from the waiting list.\n\n'
+                'Best regards,\n\n'
+                'Your {event} team'
+            ))
+        )
+        self._set_field_placeholders('send_waitinglist_subject', ['event_or_subevent', 'event'])
+        self._set_field_placeholders('send_waitinglist_message', ['event_or_subevent', 'event'])
+
+        if self.event.has_subevents:
+            self.fields['subevent'].queryset = self.event.subevents.all()
+            self.fields['subevent'].widget = Select2(
+                attrs={
+                    'data-model-select2': 'event',
+                    'data-select2-url': reverse('control:event.subevents.select2', kwargs={
+                        'event': self.event.slug,
+                        'organizer': self.event.organizer.slug,
+                    }),
+                    'data-placeholder': pgettext_lazy('subevent', 'Date')
+                }
+            )
+            self.fields['subevent'].widget.choices = self.fields['subevent'].choices
+            self.fields['subevent'].required = True
+        else:
+            del self.fields['subevent']
+        change_decimal_field(self.fields['keep_fee_fixed'], self.event.currency)

src/pretix/control/forms/organizer.py

@@ -250,6 +250,20 @@ class OrganizerSettingsForm(SettingsForm):
         ],
         widget=forms.TextInput(attrs={'class': 'colorpickerfield'})
     )
+    theme_color_background = forms.CharField(
+        label=_("Page background color"),
+        required=False,
+        validators=[
+            RegexValidator(regex='^#[0-9a-fA-F]{6}$',
+                           message=_('Please enter the hexadecimal code of a color, e.g. #990000.')),
+
+        ],
+        widget=forms.TextInput(attrs={'class': 'colorpickerfield no-contrast'})
+    )
+    theme_round_borders = forms.BooleanField(
+        label=_("Use round edges"),
+        required=False,
+    )
     organizer_homepage_text = I18nFormField(
         label=_('Homepage text'),
         required=False,
@@ -257,11 +271,18 @@ class OrganizerSettingsForm(SettingsForm):
         help_text=_('This will be displayed on the organizer homepage.')
     )
     organizer_logo_image = ExtFileField(
-        label=_('Logo image'),
+        label=_('Header image'),
         ext_whitelist=(".png", ".jpg", ".gif", ".jpeg"),
         required=False,
         help_text=_('If you provide a logo image, we will by default not show your organization name '
-                    'in the page header. We will show your logo with a maximal height of 120 pixels.')
+                    'in the page header. By default, we show your logo with a size of up to 1140x120 pixels. You '
+                    'can increase the size with the setting below. We recommend not using small details on the picture '
+                    'as it will be resized on smaller screens.')
+    )
+    organizer_logo_image_large = forms.BooleanField(
+        label=_('Use header image in its full size'),
+        help_text=_('We recommend to upload a picture at least 1170 pixels wide.'),
+        required=False,
     )
     event_list_type = forms.ChoiceField(
         label=_('Default overview style'),
@@ -312,7 +333,7 @@ class OrganizerSettingsForm(SettingsForm):
     def __init__(self, *args, **kwargs):
         super().__init__(*args, **kwargs)
         self.fields['primary_font'].choices += [
-            (a, a) for a in get_fonts()
+            (a, {"title": a, "data": v}) for a, v in get_fonts().items()
         ]
 
 

src/pretix/control/forms/vouchers.py

@@ -388,4 +388,9 @@ class VoucherBulkForm(VoucherForm):
             del data['codes']
             objs.append(obj)
         Voucher.objects.bulk_create(objs)
+        objs = []
+        for v in event.vouchers.filter(code__in=self.cleaned_data['codes']):
+            # We need to query them again as bulk_create does not fill in .pk values on databases
+            # other than PostgreSQL
+            objs.append(v)
         return objs

src/pretix/control/logdisplay.py

@@ -65,6 +65,8 @@ def _display_order_changed(event: Event, logentry: LogEntry):
             old_price=money_filter(Decimal(data['old_price']), event.currency),
             new_price=money_filter(Decimal(data['new_price']), event.currency),
         )
+    elif logentry.action_type == 'pretix.event.order.changed.addfee':
+        return text + ' ' + str(_('A fee has been added'))
     elif logentry.action_type == 'pretix.event.order.changed.feevalue':
         return text + ' ' + _('A fee was changed from {old_price} to {new_price}.').format(
             old_price=money_filter(Decimal(data['old_price']), event.currency),
@@ -180,6 +182,7 @@ def pretixcontrol_logentry_display(sender: Event, logentry: LogEntry, **kwargs):
     plains = {
         'pretix.object.cloned': _('This object has been created by cloning.'),
         'pretix.event.comment': _('The event\'s internal comment has been updated.'),
+        'pretix.event.canceled': _('The event has been canceled.'),
         'pretix.event.order.modified': _('The order details have been changed.'),
         'pretix.event.order.unpaid': _('The order has been marked as unpaid.'),
         'pretix.event.order.secret.changed': _('The order\'s secret has been changed.'),
@@ -213,6 +216,8 @@ def pretixcontrol_logentry_display(sender: Event, logentry: LogEntry, **kwargs):
         'pretix.event.order.email.expire_warning_sent': _('An email has been sent with a warning that the order is about '
                                                           'to expire.'),
         'pretix.event.order.email.order_canceled': _('An email has been sent to notify the user that the order has been canceled.'),
+        'pretix.event.order.email.event_canceled': _('An email has been sent to notify the user that the event has '
+                                                     'been canceled.'),
         'pretix.event.order.email.order_changed': _('An email has been sent to notify the user that the order has been changed.'),
         'pretix.event.order.email.order_free': _('An email has been sent to notify the user that the order has been received.'),
         'pretix.event.order.email.order_paid': _('An email has been sent to notify the user that payment has been received.'),
@@ -314,6 +319,7 @@ def pretixcontrol_logentry_display(sender: Event, logentry: LogEntry, **kwargs):
         'pretix.team.changed': _('The team settings have been changed.'),
         'pretix.team.deleted': _('The team has been deleted.'),
         'pretix.subevent.deleted': pgettext_lazy('subevent', 'The event date has been deleted.'),
+        'pretix.subevent.canceled': pgettext_lazy('subevent', 'The event date has been canceled.'),
         'pretix.subevent.changed': pgettext_lazy('subevent', 'The event date has been changed.'),
         'pretix.subevent.added': pgettext_lazy('subevent', 'The event date has been created.'),
         'pretix.subevent.quota.added': pgettext_lazy('subevent', 'A quota has been added to the event date.'),

src/pretix/control/templates/pretixcontrol/boxoffice/payment.html

@@ -5,7 +5,12 @@
     <dd>{{ payment_info.pos_id }}</dd>
     <dt>{% trans "Receipt ID" %}</dt>
     <dd>{{ payment_info.receipt_id }}</dd>
-    {% if payment_info.payment_type == "sumup" %}
+    {% if payment_info.payment_type == "stripe_terminal" %}
+        <dt>{% trans "Payment provider" %}</dt>
+        <dd>Stripe Terminal</dd>
+        <dt>{% trans "ID" %}</dt>
+        <dd>{{ payment_info.payment_data.payment_intent }}</dd>
+    {% elif payment_info.payment_type == "sumup" %}
         <dt>{% trans "Payment provider" %}</dt>
         <dd>SumUp</dd>
         <dt>{% trans "Transaction Code" %}</dt>

src/pretix/control/templates/pretixcontrol/dashboard.html

@@ -14,11 +14,13 @@
     </div>
     <h2>{% trans "Your upcoming events" %}</h2>
     <div class="dashboard">
-        <div class="widget-small widget-container">
-            <a href="{% url "control:events.add" %}" class="widget">
-                <div class="newevent"><span class="fa fa-plus-circle"></span>{% trans "Create a new event" %}</div>
-            </a>
-        </div>
+        {% if can_create_event %}
+            <div class="widget-small widget-container">
+                <a href="{% url "control:events.add" %}" class="widget">
+                    <div class="newevent"><span class="fa fa-plus-circle"></span>{% trans "Create a new event" %}</div>
+                </a>
+            </div>
+        {% endif %}
         {% for w in upcoming %}
             <div class="widget-{{ w.display_size|default:"small" }} {{ w.container_class|default:"widget-container" }} {% if w.lazy %}widget-lazy-loading{% endif %}" data-lazy-id="{{ w.lazy }}">
                 <div class="widget">

src/pretix/control/templates/pretixcontrol/event/dangerzone.html

@@ -0,0 +1,95 @@
+{% extends "pretixcontrol/event/base.html" %}
+{% load i18n %}
+{% load bootstrap3 %}
+{% block content %}
+    <h1>{% trans "Cancel or delete event" %}</h1>
+
+    <div class="panel panel-default">
+        <div class="panel-heading">
+            <h3 class="panel-title">{% trans "Go offline" %}</h3>
+        </div>
+        <div class="row panel-body">
+            <div class="col-sm-12 col-md-9 nomargin-bottom">
+                {% blocktrans trimmed %}
+                    You can take your event offline. Nobody except your team will be able to see or access it any more.
+                {% endblocktrans %}
+            </div>
+            <div class="col-sm-12 col-md-3">
+                <form action="{% url "control:event.live" event=request.event.slug organizer=request.organizer.slug %}"
+                        method="post">
+                    {% csrf_token %}
+                    <input type="hidden" name="live" value="false">
+
+                    <button type="submit" class="btn btn-primary btn-lg btn-block">
+                        <span class="fa fa-power-off"></span>
+                        {% trans "Go offline" %}
+                    </button>
+                </form>
+            </div>
+        </div>
+    </div>
+
+    <div class="panel panel-default">
+        <div class="panel-heading">
+            <h3 class="panel-title">{% trans "Cancel event" %}</h3>
+        </div>
+        <div class="row panel-body">
+            <div class="col-sm-12 col-md-9 nomargin-bottom">
+                {% blocktrans trimmed %}
+                    If you need to call of your event you want to cancel and refund all tickets, you can do so through
+                    this option.
+                {% endblocktrans %}
+            </div>
+            <div class="col-sm-12 col-md-3">
+                <a href="{% url "control:event.cancel" organizer=request.organizer.slug event=request.event.slug %}"
+                        class="btn btn-danger btn-block btn-lg">
+                    <span class="fa fa-ban"></span>
+                    {% trans "Cancel event" %}
+                </a>
+            </div>
+        </div>
+    </div>
+
+    <div class="panel panel-default">
+        <div class="panel-heading">
+            <h3 class="panel-title">{% trans "Delete personal data" %}</h3>
+        </div>
+        <div class="row panel-body">
+            <div class="col-sm-12 col-md-9 nomargin-bottom">
+                {% blocktrans trimmed %}
+                    You can remove personal data such as names and email addresses from your event and only retain the
+                    finanical information such as the number and type of ticekts sold.
+                {% endblocktrans %}
+            </div>
+            <div class="col-sm-12 col-md-3">
+                <a href="
+{% url "control:event.shredder.start" event=request.event.slug organizer=request.organizer.slug %}" class="btn btn-danger btn-lg btn-block">
+                    <span class="fa fa-eraser"></span>
+                    {% trans "Delete personal data" %}
+                </a>
+            </div>
+        </div>
+    </div>
+
+    <div class="panel panel-default">
+        <div class="panel-heading">
+            <h3 class="panel-title">{% trans "Delete event" %}</h3>
+        </div>
+        <div class="row panel-body">
+            <div class="col-sm-12 col-md-9 nomargin-bottom">
+                {% blocktrans trimmed %}
+                    You can delete your event completely only as long as it does not contain any undeletable data, such as
+                    orders not performed in test mode.
+                {% endblocktrans %}
+            </div>
+            <div class="col-sm-12 col-md-3">
+                <a href="{% url "control:event.delete" organizer=request.organizer.slug event=request.event.slug %}"
+                        class="btn btn-danger btn-block btn-lg {% if not request.event.allow_delete %}disabled{% endif %}">
+                    <span class="fa fa-trash"></span>
+                    {% trans "Delete event" %}
+                </a>
+            </div>
+        </div>
+    </div>
+
+{% endblock %}

src/pretix/control/templates/pretixcontrol/event/invoicing.html

@@ -14,6 +14,8 @@
                 {% bootstrap_field form.invoice_email_attachment layout="control" %}
                 {% bootstrap_field form.invoice_language layout="control" %}
                 {% bootstrap_field form.invoice_include_free layout="control" %}
+                {% bootstrap_field form.invoice_show_payments layout="control" %}
+                {% bootstrap_field form.invoice_reissue_after_modify layout="control" %}
                 {% bootstrap_field form.invoice_numbers_consecutive layout="control" %}
                 {% bootstrap_field form.invoice_numbers_prefix layout="control" %}
                 {% bootstrap_field form.invoice_numbers_prefix_cancellations layout="control" %}
@@ -27,6 +29,7 @@
                 {% bootstrap_field form.invoice_address_vatid layout="control" %}
                 {% bootstrap_field form.invoice_address_beneficiary layout="control" %}
                 {% bootstrap_field form.invoice_address_not_asked_free layout="control" %}
+                {% bootstrap_field form.invoice_address_custom_field layout="control" %}
             </fieldset>
             <fieldset>
                 <legend>{% trans "Issuer details" %}</legend>

src/pretix/control/templates/pretixcontrol/event/live.html

@@ -112,4 +112,11 @@
             <div class="clear"></div>
         </div>
     </div>
+    <div class="text-right">
+        <a href="{% url "control:event.dangerzone" organizer=request.organizer.slug event=request.event.slug %}"
+                class="btn btn-default btn-lg">
+            <span class="fa fa-trash"></span>
+            {% trans "Cancel or delete event" %}
+        </a>
+    </div>
 {% endblock %}

src/pretix/control/templates/pretixcontrol/event/plugins.html

@@ -10,62 +10,75 @@
                 {% trans "Your changes have been saved." %}
             </div>
         {% endif %}
-        <div class="table-responsive">
-            <table class="table">
-                {% for plugin in plugins %}
-                    <tr class="{% if plugin.app.compatibility_errors %}warning{% elif plugin.module in plugins_active %}success{% else %}default{% endif %}">
-                        <td>
-                            <strong>{{ plugin.name }}</strong>
-                            {% if plugin.author %}
-                                <p class="meta text-muted">{% blocktrans trimmed with v=plugin.version a=plugin.author %}
-                                    Version {{ v }} by <em>{{ a }}</em>
-                                {% endblocktrans %}</p>
-                            {% else %}
-                                <p class="meta text-muted">{% blocktrans trimmed with v=plugin.version a=plugin.author %}
-                                    Version {{ v }}
-                                {% endblocktrans %}</p>
-                            {% endif %}
-                            <p>{{ plugin.description }}</p>
-                            {% if plugin.restricted and not request.user.is_staff %}
-                                <span class="text-muted">
-                                    {% trans "This plugin needs to be enabled by a system administrator for your event." %}
-                                </span>
-                            {% endif %}
-                            {% if plugin.app.compatibility_errors %}
-                                <div class="alert alert-warning">
-                                    {% trans "This plugin cannot be enabled for the following reasons:" %}
-                                    <ul>
-                                        {% for e in plugin.app.compatibility_errors %}
-                                            <li>{{ e }}</li>
-                                        {% endfor %}
-                                    </ul>
-                                </div>
-                            {% endif %}
-                            {% if plugin.app.compatibility_warnings %}
-                                <div class="alert alert-warning">
-                                    {% trans "This plugin reports the following problems:" %}
-                                    <ul>
-                                        {% for e in plugin.app.compatibility_warnings %}
-                                            <li>{{ e }}</li>
-                                        {% endfor %}
-                                    </ul>
-                                </div>
-                            {% endif %}
-                        </td>
-                        <td class="text-right flip">
-                            {% if plugin.app.compatibility_errors %}
-                                <button class="btn disabled btn-block btn-default" disabled="disabled">{% trans "Incompatible" %}</button>
-                            {% elif plugin.restricted and not staff_session %}
-                                <button class="btn disabled btn-block btn-default" disabled="disabled">{% trans "Not available" %}</button>
-                            {% elif plugin.module in plugins_active %}
-                                <button class="btn btn-default btn-block" name="plugin:{{ plugin.module }}" value="disable">{% trans "Disable" %}</button>
-                            {% else %}
-                                <button class="btn btn-default btn-block" name="plugin:{{ plugin.module }}" value="enable">{% trans "Enable" %}</button>
-                            {% endif %}
-                        </td>
-                    </tr>
-                {% endfor %}
-            </table>
+        <div class="tabbed-form">
+            {% for cat, catlabel, plist in plugins %}
+                <fieldset>
+                    <legend>{{ catlabel }}</legend>
+                    <div class="table-responsive">
+                        <table class="table">
+                            {% for plugin in plist %}
+                                <tr class="{% if plugin.app.compatibility_errors %}warning{% elif plugin.module in plugins_active %}success{% else %}default{% endif %}">
+                                    <td>
+                                        <strong>{{ plugin.name }}</strong>
+                                        {% if plugin.author %}
+                                            <p class="meta text-muted">
+                                                {% blocktrans trimmed with v=plugin.version a=plugin.author %}
+                                                    Version {{ v }} by <em>{{ a }}</em>
+                                                {% endblocktrans %}</p>
+                                        {% else %}
+                                            <p class="meta text-muted">
+                                                {% blocktrans trimmed with v=plugin.version a=plugin.author %}
+                                                    Version {{ v }}
+                                                {% endblocktrans %}</p>
+                                        {% endif %}
+                                        <p>{{ plugin.description }}</p>
+                                        {% if plugin.restricted and not request.user.is_staff %}
+                                            <span class="text-muted">
+                                                {% trans "This plugin needs to be enabled by a system administrator for your event." %}
+                                            </span>
+                                        {% endif %}
+                                        {% if plugin.app.compatibility_errors %}
+                                            <div class="alert alert-warning">
+                                                {% trans "This plugin cannot be enabled for the following reasons:" %}
+                                                <ul>
+                                                    {% for e in plugin.app.compatibility_errors %}
+                                                        <li>{{ e }}</li>
+                                                    {% endfor %}
+                                                </ul>
+                                            </div>
+                                        {% endif %}
+                                        {% if plugin.app.compatibility_warnings %}
+                                            <div class="alert alert-warning">
+                                                {% trans "This plugin reports the following problems:" %}
+                                                <ul>
+                                                    {% for e in plugin.app.compatibility_warnings %}
+                                                        <li>{{ e }}</li>
+                                                    {% endfor %}
+                                                </ul>
+                                            </div>
+                                        {% endif %}
+                                    </td>
+                                    <td class="text-right flip" width="20%">
+                                        {% if plugin.app.compatibility_errors %}
+                                            <button class="btn disabled btn-block btn-default"
+                                                    disabled="disabled">{% trans "Incompatible" %}</button>
+                                            {% elif plugin.restricted and not staff_session %}
+                                            <button class="btn disabled btn-block btn-default"
+                                                    disabled="disabled">{% trans "Not available" %}</button>
+                                            {% elif plugin.module in plugins_active %}
+                                            <button class="btn btn-default btn-block" name="plugin:{{ plugin.module }}"
+                                                    value="disable">{% trans "Disable" %}</button>
+                                        {% else %}
+                                            <button class="btn btn-default btn-block" name="plugin:{{ plugin.module }}"
+                                                    value="enable">{% trans "Enable" %}</button>
+                                        {% endif %}
+                                    </td>
+                                </tr>
+                            {% endfor %}
+                        </table>
+                    </div>
+                </fieldset>
+            {% endfor %}
         </div>
     </form>
 {% endblock %}

src/pretix/control/templates/pretixcontrol/event/settings.html

@@ -3,6 +3,7 @@
 {% load bootstrap3 %}
 {% load static %}
 {% load hierarkey_form %}
+{% load formset_tags %}
 {% block custom_header %}
     {{ block.super }}
     <link type="text/css" rel="stylesheet" href="{% url "control:pdf.css" %}">
@@ -97,12 +98,16 @@
             <fieldset>
                 <legend>{% trans "Shop design" %}</legend>
                 {% bootstrap_field sform.logo_image layout="control" %}
+                {% bootstrap_field sform.logo_image_large layout="control" %}
+                {% bootstrap_field sform.logo_show_title layout="control" %}
                 {% bootstrap_field sform.og_image layout="control" %}
                 {% url "control:organizer.edit" organizer=request.organizer.slug as org_url %}
                 {% propagated request.event org_url "primary_color" "primary_font" "theme_color_success" "theme_color_danger" %}
                     {% bootstrap_field sform.primary_color layout="control" %}
                     {% bootstrap_field sform.theme_color_success layout="control" %}
                     {% bootstrap_field sform.theme_color_danger layout="control" %}
+                    {% bootstrap_field sform.theme_color_background layout="control" %}
+                    {% bootstrap_field sform.theme_round_borders layout="control" %}
                     {% bootstrap_field sform.primary_font layout="control" %}
                 {% endpropagated %}
             </fieldset>
@@ -139,21 +144,75 @@
                 {% bootstrap_field sform.waiting_list_auto layout="control" %}
                 {% bootstrap_field sform.waiting_list_hours layout="control" %}
             </fieldset>
+            <fieldset>
+                <legend>{% trans "Item metadata" %}</legend>
+                <p>
+                    {% blocktrans trimmed %}
+                        You can here define a set of metadata properties (i.e. variables) that you can later set for your
+                        items and re-use in places like ticket layouts. This is an useful timesaver if you create lots and
+                        lots of items.
+                    {% endblocktrans %}
+                </p>
+                <div class="formset" data-formset data-formset-prefix="{{ formset.prefix }}">
+                    {{ formset.management_form }}
+                    {% bootstrap_formset_errors formset %}
+                    <div data-formset-body>
+                        {% for form in formset %}
+                            <div class="row" data-formset-form>
+                                <div class="sr-only">
+                                    {{ form.id }}
+                                    {% bootstrap_field form.DELETE form_group_class="" layout="inline" %}
+                                </div>
+                                <div class="col-md-5">
+                                    {% bootstrap_form_errors form %}
+                                    {% bootstrap_field form.name layout='inline' form_group_class="" %}
+                                </div>
+                                <div class="col-md-5 col-lg-6">
+                                    {% bootstrap_field form.default layout='inline' form_group_class="" %}
+                                </div>
+                                <div class="col-md-2 col-lg-1 text-right flip">
+                                    <button type="button" class="btn btn-danger" data-formset-delete-button>
+                                        <i class="fa fa-trash"></i></button>
+                                </div>
+                            </div>
+                        {% endfor %}
+                    </div>
+                    <script type="form-template" data-formset-empty-form>
+                        {% escapescript %}
+                            <div class="row" data-formset-form>
+                                <div class="sr-only">
+                                    {{ formset.empty_form.id }}
+                                    {% bootstrap_field formset.empty_form.DELETE form_group_class="" layout="inline" %}
+                                </div>
+                                <div class="col-md-5">
+                                    {% bootstrap_field formset.empty_form.name layout='inline' form_group_class="" %}
+                                </div>
+                                <div class="col-md-5 col-lg-6">
+                                    {% bootstrap_field formset.empty_form.default layout='inline' form_group_class="" %}
+                                </div>
+                                <div class="col-md-2 col-lg-1 text-right flip">
+                                    <button type="button" class="btn btn-danger" data-formset-delete-button>
+                                        <i class="fa fa-trash"></i></button>
+                                </div>
+                            </div>
+                        {% endescapescript %}
+                    </script>
+                    <p>
+                        <button type="button" class="btn btn-default" data-formset-add>
+                            <i class="fa fa-plus"></i> {% trans "Add property" %}</button>
+                    </p>
+                </div>
+            </fieldset>
         </div>
         <div class="form-group submit-group">
             <button type="submit" class="btn btn-primary btn-save">
                 {% trans "Save" %}
             </button>
             <div class="pull-left">
-                <a href="{% url "control:event.delete" organizer=request.organizer.slug event=request.event.slug %}"
-                        class="btn {% if request.event.allow_delete %}{% endif %} btn-danger btn-lg">
-                    <span class="fa fa-trash"></span>
-                    {% trans "Delete event" %}
-                </a>
-                <a href="{% url "control:event.shredder.start" organizer=request.organizer.slug event=request.event.slug %}"
+                <a href="{% url "control:event.dangerzone" organizer=request.organizer.slug event=request.event.slug %}"
                         class="btn btn-danger btn-lg">
-                    <span class="fa fa-eraser"></span>
-                    {% trans "Delete personal data" %}
+                    <span class="fa fa-trash"></span>
+                    {% trans "Cancel or delete event" %}
                 </a>
                 <a href="{% url "control:events.add" %}?clone={{ request.event.pk }}"
                         class="btn btn-default btn-lg">

src/pretix/control/templates/pretixcontrol/font_option.html

@@ -1,2 +1,2 @@
-{% load i18n %}{% if widget.wrap_label %}<label{% if widget.attrs.id %} for="{{ widget.attrs.id }}"{% endif %} class="preload-font"
-        data-family="{{ widget.label }}" data-style="regular">{% endif %}{% include "django/forms/widgets/input.html" %}{% if widget.wrap_label %} <strong>{{ widget.label }}</strong><br>{% trans "The quick brown fox jumps over the lazy dog." context "typography" %}</label>{% endif %}
+{% load getitem %}{% load i18n %}{% if widget.wrap_label %}<label{% if widget.attrs.id %} for="{{ widget.attrs.id }}"{% endif %} class="preload-font"
+        data-family="{{ widget.label.title }}" data-style="regular">{% endif %}{% include "django/forms/widgets/input.html" %}{% if widget.wrap_label %} <strong>{{ widget.label.title }}</strong><br>{% trans "The quick brown fox jumps over the lazy dog." context "typography" %}{% if "sample" in widget.label.data %}<br>{{ widget.label.data.sample }}{% endif %}</label>{% endif %}

src/pretix/control/templates/pretixcontrol/item/index.html

@@ -20,6 +20,26 @@
                         {% bootstrap_field form.description layout="control" %}
                         {% bootstrap_field form.picture layout="control" %}
                         {% bootstrap_field form.require_approval layout="control" %}
+
+                        {% if meta_forms %}
+                            <div class="form-group metadata-group">
+                                <label class="col-md-3 control-label">{% trans "Meta data" %}</label>
+                                <div class="col-md-9">
+                                    {% for form in meta_forms %}
+                                        <div class="row">
+                                            <div class="col-md-4">
+                                                <label for="{{ form.value.id_for_label }}">
+                                                    {{ form.property.name }}
+                                                </label>
+                                            </div>
+                                            <div class="col-md-8">
+                                                {% bootstrap_form form layout="inline" %}
+                                            </div>
+                                        </div>
+                                    {% endfor %}
+                                </div>
+                            </div>
+                        {% endif %}
                     </fieldset>
                     <fieldset>
                         <legend>{% trans "Price" %}</legend>

src/pretix/control/templates/pretixcontrol/order/index.html

@@ -734,6 +734,10 @@
                                             {% endif %}
                                         </dd>
                                     {% endif %}
+                                    {% if request.event.settings.invoice_address_custom_field and order.invoice_address.custom_field %}
+                                        <dt>{{ request.event.settings.invoice_address_custom_field }}</dt>
+                                        <dd>{{ order.invoice_address.custom_field }}</dd>
+                                    {% endif %}
                                     <dt>{% trans "Internal reference" %}</dt>
                                     <dd>{{ order.invoice_address.internal_reference }}</dd>
                                 </dl>

src/pretix/control/templates/pretixcontrol/orders/cancel.html

@@ -0,0 +1,72 @@
+{% extends "pretixcontrol/event/base.html" %}
+{% load i18n %}
+{% load eventsignal %}
+{% load bootstrap3 %}
+{% block title %}{% trans "Cancel event" %}{% endblock %}
+{% block content %}
+    <h1>{% trans "Cancel event" %}</h1>
+    <div class="alert alert-warning">
+        {% blocktrans trimmed %}
+            You can use this page to cancel and refund all orders at once in case you need to call of your event.
+            This will also disable all products so no new orders can be created. Make sure that you check afterwards
+            for any overpaid orders or pending refunds that you need to take care of manually.
+        {% endblocktrans %}
+        <br><br>
+        {% blocktrans trimmed %}
+            After starting this operation, depending on the size of your event, it might take a few minutes or longer
+            until all orders are processed.
+        {% endblocktrans %}
+        <br><br>
+        <strong>
+            {% trans "All actions performed on this page are irreversible. If in doubt, please contact support before using it." %}
+        </strong>
+    </div>
+    <form action="" method="post" class="form-horizontal" data-asynctask data-asynctask-download data-asynctask-long>
+        {% csrf_token %}
+        {% bootstrap_form_errors form %}
+        {% if request.event.has_subevents %}
+            <fieldset>
+                <legend>{% trans "Select date" context "subevents" %}</legend>
+                {% bootstrap_field form.subevent layout="control" %}
+            </fieldset>
+        {% endif %}
+        <fieldset>
+            <legend>{% trans "Refund options" %}</legend>
+            {% bootstrap_field form.auto_refund layout="control" %}
+            {% bootstrap_field form.keep_fee_fixed layout="control" %}
+            {% bootstrap_field form.keep_fee_percentage layout="control" %}
+            {% bootstrap_field form.keep_fees layout="control" %}
+        </fieldset>
+        <fieldset>
+            <legend>{% trans "Send out emails" %}</legend>
+            {% bootstrap_field form.send layout="control" %}
+            {% bootstrap_field form.send_subject layout="horizontal" %}
+            {% bootstrap_field form.send_message layout="horizontal" %}
+        </fieldset>
+        <fieldset>
+            <legend>{% trans "Waiting list" %}</legend>
+            <p>
+                {% blocktrans trimmed %}
+                    Your waiting list will not be deleted automatically, but it will receive no new tickets due to the
+                    products being disabled. You can choose to inform people on the waiting list by using this option.
+                {% endblocktrans %}
+            </p>
+            <p>
+                <strong>
+                    {% blocktrans trimmed %}
+                        You should not execute this function multiple times for the same event, or everyone on the
+                        waiting list will get multiple emails.
+                    {% endblocktrans %}
+                </strong>
+            </p>
+            {% bootstrap_field form.send_waitinglist layout="control" %}
+            {% bootstrap_field form.send_waitinglist_subject layout="horizontal" %}
+            {% bootstrap_field form.send_waitinglist_message layout="horizontal" %}
+        </fieldset>
+        <div class="form-group submit-group">
+            <button type="submit" class="btn btn-danger btn-save">
+                {% trans "Cancel all orders" %}
+            </button>
+        </div>
+    </form>
+{% endblock %}

src/pretix/control/templates/pretixcontrol/organizers/edit.html

@@ -37,6 +37,7 @@
             <fieldset>
                 <legend>{% trans "Organizer page" %}</legend>
                 {% bootstrap_field sform.organizer_logo_image layout="control" %}
+                {% bootstrap_field sform.organizer_logo_image_large layout="control" %}
                 {% bootstrap_field sform.organizer_homepage_text layout="control" %}
                 {% bootstrap_field sform.event_list_type layout="control" %}
                 {% bootstrap_field sform.event_list_availability layout="control" %}
@@ -57,6 +58,8 @@
                 {% bootstrap_field sform.primary_color layout="control" %}
                 {% bootstrap_field sform.theme_color_success layout="control" %}
                 {% bootstrap_field sform.theme_color_danger layout="control" %}
+                {% bootstrap_field sform.theme_color_background layout="control" %}
+                {% bootstrap_field sform.theme_round_borders layout="control" %}
                 {% bootstrap_field sform.primary_font layout="control" %}
                 {% bootstrap_field sform.favicon layout="control" %}
             </fieldset>

src/pretix/control/templates/pretixcontrol/organizers/giftcard.html

@@ -45,50 +45,53 @@
                         {% trans "Transactions" %}
                     </h3>
                 </div>
-                <table class="panel-body table">
-                    <thead>
-                    <tr>
-                        <th>{% trans "Date" %}</th>
-                        <th>{% trans "Order" %}</th>
-                        <th class="text-right">{% trans "Value" %}</th>
-                    </tr>
-                    </thead>
-                    <tbody>
-                    {% for t in card.transactions.all %}
+                <form class="" method="post" action="">
+                    {% csrf_token %}
+                    <table class="panel-body table">
+                        <thead>
                         <tr>
-                            <td>{{ t.datetime|date:"SHORT_DATETIME_FORMAT" }}</td>
-                            <td>
-                                {% if t.order %}
-                                    <a href="{% url "control:event.order" event=t.order.event.slug organizer=t.order.event.organizer.slug code=t.order.code %}">
-                                        {{ t.order.full_code }}
-                                    </a>
-                                {% else %}
-                                    <em>{% trans "Manual transaction" %}</em>
-                                {% endif %}
-                            </td>
-                            <td class="text-right">
-                                {{ t.value|money:card.currency }}
-                            </td>
+                            <th>{% trans "Date" %}</th>
+                            <th>{% trans "Order" %}</th>
+                            <th class="text-right">{% trans "Value" %}</th>
                         </tr>
-                    {% endfor %}
-                    </tbody>
-                    <tfoot>
-                    <tr>
-                        <td></td>
-                        <td></td>
-                        <td class="text-right">
-                            <form class="helper-display-inline form-inline" method="post" action="">
-                                {% csrf_token %}
+                        </thead>
+                        <tbody>
+                        {% for t in card.transactions.all %}
+                            <tr>
+                                <td>{{ t.datetime|date:"SHORT_DATETIME_FORMAT" }}</td>
+                                <td>
+                                    {% if t.order %}
+                                        <a href="{% url "control:event.order" event=t.order.event.slug organizer=t.order.event.organizer.slug code=t.order.code %}">
+                                            {{ t.order.full_code }}
+                                        </a>
+                                    {% else %}
+                                        <em>{% trans "Manual transaction" %}{% if t.text %}: {{ t.text }}{% endif %}</em>
+                                    {% endif %}
+                                </td>
+                                <td class="text-right">
+                                    {{ t.value|money:card.currency }}
+                                </td>
+                            </tr>
+                        {% endfor %}
+                        </tbody>
+                        <tfoot>
+                        <tr>
+                            <td></td>
+                            <td>
+                                <input type="text" class="form-control helper-display-block" placeholder="{% trans "Text" %}"
+                                        name="text">
+                            </td>
+                            <td class="text-right form-inline">
                                 <input type="text" class="form-control input-sm" placeholder="{% trans "Value" %}" name="value">
                                 <button class="btn btn-primary">
                                     <span class="fa fa-plus"></span>
                                 </button>
-                            </form>
-                        </td>
+                            </td>
 
-                    </tr>
-                    </tfoot>
-                </table>
+                        </tr>
+                        </tfoot>
+                    </table>
+                </form>
             </div>
         </div>
         <div class="col-md-2 col-xs-12">

src/pretix/control/templates/pretixcontrol/pdf/index.html

@@ -344,6 +344,11 @@
                                         {% trans "Event attribute:" %} {{ p.name }}
                                     </option>
                                 {% endfor %}
+                                {% for p in request.event.item_meta_properties.all %}
+                                    <option value="itemmeta:{{ p.name }}">
+                                        {% trans "Item attribute:" %} {{ p.name }}
+                                    </option>
+                                {% endfor %}
                                 <option value="other">{% trans "Other…" %}</option>
                             </select>
                             <textarea type="text" value="" class="input-block-level form-control"
@@ -403,9 +408,12 @@
     <img src="{% static 'pretixpresale/pdf/powered_by_pretix_white.png' %}" id="poweredby-white" class="sr-only">
     {% for family, styles in fonts.items %}
     {% for style, formats in styles.items %}
+        {% if "sample" not in style %}
         <span class="preload-font" data-family="{{ family }}" data-style="{{ style }}">
             giItT1WQy@!-/#
+            {% if "sample" in styles %}{{ styles.sample }}{% endif %}
         </span>
+        {% endif %}
     {% endfor %}
     {% endfor %}
 {% endblock %}

src/pretix/control/templates/pretixcontrol/pdf/webfonts.css

@@ -1,7 +1,20 @@
 {% load static %}
+@font-face {
+    font-family: 'AND';
+    font-style: normal;
+    font-weight: normal;
+    src: url('{% static "fonts/AND-Regular.ttf" %}') format('truetype');
+}
+@font-face {
+    font-family: 'AND';
+    font-style: normal;
+    font-weight: bold;
+    src: url('{% static "fonts/AND-Regular.ttf" %}') format('truetype');
+}
 
 {% for family, styles in fonts.items %}
 {% for style, formats in styles.items %}
+{% if "sample" not in style %}
 @font-face {
     font-family: '{{ family }}';
     {% if style == "italic" or style == "bolditalic" %}
@@ -19,7 +32,7 @@
          {% if "truetype" in formats %}url('{% static formats.truetype %}') format('truetype'){% endif %};
 }
 .preload-font[data-family="{{family}}"][data-style="{{style}}"] {
-    font-family: '{{ family }}';
+    font-family: '{{ family }}', 'AND';
     {% if style == "italic" or style == "bolditalic" %}
         font-style: italic;
     {% else %}
@@ -32,5 +45,6 @@
     {% endif %}
 
 }
+{% endif %}
 {% endfor %}
 {% endfor %}

src/pretix/control/urls.py

@@ -159,7 +159,9 @@ urlpatterns = [
         url(r'^items/(?P<item>\d+)/up$', item.item_move_up, name='event.items.up'),
         url(r'^items/(?P<item>\d+)/down$', item.item_move_down, name='event.items.down'),
         url(r'^items/(?P<item>\d+)/delete$', item.ItemDelete.as_view(), name='event.items.delete'),
+        url(r'^items/typeahead/meta/$', typeahead.item_meta_values, name='event.items.meta.typeahead'),
         url(r'^categories/$', item.CategoryList.as_view(), name='event.items.categories'),
+        url(r'^categories/select2$', typeahead.category_select2, name='event.items.categories.select2'),
         url(r'^categories/(?P<category>\d+)/delete$', item.CategoryDelete.as_view(),
             name='event.items.categories.delete'),
         url(r'^categories/(?P<category>\d+)/up$', item.category_move_up, name='event.items.categories.up'),
@@ -263,6 +265,8 @@ urlpatterns = [
         url(r'^orders/refunds/$', orders.RefundList.as_view(), name='event.orders.refunds'),
         url(r'^orders/go$', orders.OrderGo.as_view(), name='event.orders.go'),
         url(r'^orders/$', orders.OrderList.as_view(), name='event.orders'),
+        url(r'^dangerzone/$', event.DangerZone.as_view(), name='event.dangerzone'),
+        url(r'^cancel/$', orders.EventCancel.as_view(), name='event.cancel'),
         url(r'^shredder/$', shredder.StartShredView.as_view(), name='event.shredder.start'),
         url(r'^shredder/export$', shredder.ShredExportView.as_view(), name='event.shredder.export'),
         url(r'^shredder/download/(?P<file>[^/]+)/$', shredder.ShredDownloadView.as_view(), name='event.shredder.download'),

src/pretix/control/views/checkin.py

@@ -14,6 +14,7 @@ from pytz import UTC
 from pretix.base.channels import get_all_sales_channels
 from pretix.base.models import Checkin, Order, OrderPosition
 from pretix.base.models.checkin import CheckinList
+from pretix.base.signals import checkin_created
 from pretix.control.forms.checkin import CheckinListForm
 from pretix.control.forms.filter import CheckInFilterForm
 from pretix.control.permissions import EventPermissionRequiredMixin
@@ -124,6 +125,7 @@ class CheckInListShow(EventPermissionRequiredMixin, PaginationMixin, ListView):
                         'list': self.list.pk,
                         'web': True
                     }, user=request.user)
+                    checkin_created.send(op.order.event, checkin=ci)
 
             messages.success(request, _('The selected tickets have been marked as checked in.'))
 

src/pretix/control/views/dashboards.py

@@ -2,9 +2,11 @@ from datetime import timedelta
 from decimal import Decimal
 
 import pytz
+from django.conf import settings
 from django.contrib.contenttypes.models import ContentType
 from django.db.models import (
-    Count, Exists, IntegerField, Max, Min, OuterRef, Q, Subquery, Sum,
+    Count, Exists, IntegerField, Max, Min, OuterRef, Prefetch, Q, Subquery,
+    Sum,
 )
 from django.db.models.functions import Coalesce, Greatest
 from django.dispatch import receiver
@@ -20,8 +22,8 @@ from django.utils.translation import pgettext, ugettext_lazy as _, ungettext
 
 from pretix.base.decimal import round_decimal
 from pretix.base.models import (
-    Item, Order, OrderPosition, OrderRefund, RequiredAction, SubEvent, Voucher,
-    WaitingListEntry,
+    Item, ItemVariation, Order, OrderPosition, OrderRefund, RequiredAction,
+    SubEvent, Voucher, WaitingListEntry,
 )
 from pretix.base.timeline import timeline_for_event
 from pretix.control.forms.event import CommentForm
@@ -122,26 +124,50 @@ def waitinglist_widgets(sender, subevent=None, lazy=False, **kwargs):
     widgets = []
 
     wles = WaitingListEntry.objects.filter(event=sender, subevent=subevent, voucher__isnull=True)
-    if wles.count():
+    if wles.exists():
         if not lazy:
             quota_cache = {}
-            itemvar_cache = {}
             happy = 0
+            tuples = wles.values('item', 'variation').order_by().annotate(cnt=Count('id'))
 
-            for wle in wles:
-                if (wle.item, wle.variation) not in itemvar_cache:
-                    itemvar_cache[(wle.item, wle.variation)] = (
-                        wle.variation.check_quotas(subevent=wle.subevent, count_waitinglist=False, _cache=quota_cache)
-                        if wle.variation
-                        else wle.item.check_quotas(subevent=wle.subevent, count_waitinglist=False, _cache=quota_cache)
-                    )
-                row = itemvar_cache.get((wle.item, wle.variation))
+            items = {
+                i.pk: i for i in sender.items.filter(id__in=[t['item'] for t in tuples]).prefetch_related(
+                    Prefetch('quotas',
+                             to_attr='_subevent_quotas',
+                             queryset=sender.quotas.using(settings.DATABASE_REPLICA).filter(subevent=subevent)),
+                )
+            }
+            vars = {
+                i.pk: i for i in ItemVariation.objects.filter(
+                    item__event=sender, id__in=[t['variation'] for t in tuples if t['variation']]
+                ).prefetch_related(
+                    Prefetch('quotas',
+                             to_attr='_subevent_quotas',
+                             queryset=sender.quotas.using(settings.DATABASE_REPLICA).filter(subevent=subevent)),
+                )
+            }
+
+            for wlt in tuples:
+                item = items.get(wlt['item'])
+                variation = vars.get(wlt['variation'])
+                if not item:
+                    continue
+                quotas = (
+                    variation._get_quotas(subevent=subevent)
+                    if variation
+                    else item._get_quotas(subevent=subevent)
+                )
+                row = (
+                    variation.check_quotas(subevent=subevent, count_waitinglist=False, _cache=quota_cache)
+                    if variation
+                    else item.check_quotas(subevent=subevent, count_waitinglist=False, _cache=quota_cache)
+                )
                 if row[1] is None:
-                    itemvar_cache[(wle.item, wle.variation)] = (row[0], row[1])
                     happy += 1
                 elif row[1] > 0:
-                    itemvar_cache[(wle.item, wle.variation)] = (row[0], row[1] - 1)
                     happy += 1
+                    for q in quotas:
+                        quota_cache[q.pk] = (quota_cache[q.pk][0], quota_cache[q.pk][1] - 1)
 
         widgets.append({
             'content': None if lazy else NUM_WIDGET.format(
@@ -535,6 +561,7 @@ def user_index(request):
 
     ctx = {
         'widgets': rearrange(widgets),
+        'can_create_event': request.user.teams.filter(can_create_events=True).exists(),
         'upcoming': widgets_for_event_qs(
             request,
             annotated_event_query(request, lazy=True).filter(

src/pretix/control/views/event.py

@@ -2,6 +2,7 @@ import json
 import re
 from collections import OrderedDict
 from decimal import Decimal
+from itertools import groupby
 from urllib.parse import urlsplit
 
 from django.conf import settings
@@ -10,6 +11,7 @@ from django.contrib.contenttypes.models import ContentType
 from django.core.files import File
 from django.db import transaction
 from django.db.models import ProtectedError
+from django.forms import inlineformset_factory
 from django.http import (
     Http404, HttpResponse, HttpResponseBadRequest, HttpResponseNotAllowed,
     JsonResponse,
@@ -38,9 +40,9 @@ from pretix.base.signals import register_ticket_outputs
 from pretix.base.templatetags.rich_text import markdown_compile_email
 from pretix.control.forms.event import (
     CancelSettingsForm, CommentForm, EventDeleteForm, EventMetaValueForm,
-    EventSettingsForm, EventUpdateForm, InvoiceSettingsForm, MailSettingsForm,
-    PaymentSettingsForm, ProviderForm, QuickSetupForm,
-    QuickSetupProductFormSet, TaxRuleForm, TaxRuleLineFormSet,
+    EventSettingsForm, EventUpdateForm, InvoiceSettingsForm,
+    ItemMetaPropertyForm, MailSettingsForm, PaymentSettingsForm, ProviderForm,
+    QuickSetupForm, QuickSetupProductFormSet, TaxRuleForm, TaxRuleLineFormSet,
     TicketSettingsForm, WidgetCodeForm,
 )
 from pretix.control.permissions import EventPermissionRequiredMixin
@@ -50,6 +52,7 @@ from pretix.multidomain.urlreverse import get_domain
 from pretix.plugins.stripe.payment import StripeSettingsHolder
 from pretix.presale.style import regenerate_css
 
+from ...base.models.items import ItemMetaProperty
 from ..logdisplay import OVERVIEW_BANLIST
 from . import CreateView, PaginationMixin, UpdateView
 
@@ -136,6 +139,7 @@ class EventUpdate(DecoupleMixin, EventSettingsViewMixin, EventPermissionRequired
         context = super().get_context_data(*args, **kwargs)
         context['sform'] = self.sform
         context['meta_forms'] = self.meta_forms
+        context['formset'] = self.formset
         return context
 
     @transaction.atomic
@@ -143,6 +147,7 @@ class EventUpdate(DecoupleMixin, EventSettingsViewMixin, EventPermissionRequired
         self._save_decoupled(self.sform)
         self.sform.save()
         self.save_meta()
+        self.save_formset(self.object)
         change_css = False
 
         if self.sform.has_changed():
@@ -151,6 +156,7 @@ class EventUpdate(DecoupleMixin, EventSettingsViewMixin, EventPermissionRequired
             })
             display_properties = (
                 'primary_color', 'theme_color_success', 'theme_color_danger', 'primary_font',
+                'theme_color_background', 'theme_round_borders',
             )
             if any(p in self.sform.changed_data for p in display_properties):
                 change_css = True
@@ -182,7 +188,8 @@ class EventUpdate(DecoupleMixin, EventSettingsViewMixin, EventPermissionRequired
 
     def post(self, request, *args, **kwargs):
         form = self.get_form()
-        if form.is_valid() and self.sform.is_valid() and all([f.is_valid() for f in self.meta_forms]):
+        if form.is_valid() and self.sform.is_valid() and all([f.is_valid() for f in self.meta_forms]) and \
+                self.formset.is_valid():
             # reset timezone
             zone = timezone(self.sform.cleaned_data['timezone'])
             event = form.instance
@@ -199,6 +206,33 @@ class EventUpdate(DecoupleMixin, EventSettingsViewMixin, EventPermissionRequired
     def reset_timezone(tz, dt):
         return tz.localize(dt.replace(tzinfo=None)) if dt is not None else None
 
+    @cached_property
+    def formset(self):
+        formsetclass = inlineformset_factory(
+            Event, ItemMetaProperty,
+            form=ItemMetaPropertyForm, can_order=False, can_delete=True, extra=0
+        )
+        return formsetclass(self.request.POST if self.request.method == "POST" else None,
+                            instance=self.object, queryset=self.object.item_meta_properties.all())
+
+    def save_formset(self, obj):
+        for form in self.formset.initial_forms:
+            if form in self.formset.deleted_forms:
+                if not form.instance.pk:
+                    continue
+                form.instance.delete()
+                form.instance.pk = None
+            elif form.has_changed():
+                form.save()
+
+        for form in self.formset.extra_forms:
+            if not form.has_changed():
+                continue
+            if self.formset._should_delete_form(form):
+                continue
+            form.instance.event = obj
+            form.save()
+
 
 class EventPlugins(EventSettingsViewMixin, EventPermissionRequiredMixin, TemplateView, SingleObjectMixin):
     model = Event
@@ -213,8 +247,32 @@ class EventPlugins(EventSettingsViewMixin, EventPermissionRequiredMixin, Templat
         from pretix.base.plugins import get_all_plugins
 
         context = super().get_context_data(*args, **kwargs)
-        context['plugins'] = [p for p in get_all_plugins(self.object) if not p.name.startswith('.')
-                              and getattr(p, 'visible', True)]
+        plugins = [p for p in get_all_plugins(self.object) if not p.name.startswith('.')
+                   and getattr(p, 'visible', True)]
+        order = [
+            'FEATURE',
+            'PAYMENT',
+            'INTEGRATION',
+            'CUSTOMIZATION',
+            'FORMAT',
+            'API',
+        ]
+        labels = {
+            'FEATURE': _('Features'),
+            'PAYMENT': _('Payment providers'),
+            'INTEGRATION': _('Integrations'),
+            'CUSTOMIZATION': _('Customizations'),
+            'FORMAT': _('Output and export formats'),
+            'API': _('API features'),
+        }
+        context['plugins'] = sorted([
+            (c, labels.get(c, c), list(plist))
+            for c, plist
+            in groupby(
+                sorted(plugins, key=lambda p: str(getattr(p, 'category', _('Other')))),
+                lambda p: str(getattr(p, 'category', _('Other')))
+            )
+        ], key=lambda c: (order.index(c[0]), c[1]) if c[0] in order else (999, str(c[1])))
         context['plugins_active'] = self.object.get_plugins()
         return context
 
@@ -472,6 +530,11 @@ class InvoicePreview(EventPermissionRequiredMixin, View):
         return resp
 
 
+class DangerZone(EventPermissionRequiredMixin, TemplateView):
+    permission = 'can_change_event_settings'
+    template_name = 'pretixcontrol/event/dangerzone.html'
+
+
 class DisplaySettings(View):
     def get(self, request, *wargs, **kwargs):
         return redirect(reverse('control:event.settings', kwargs={

src/pretix/control/views/item.py

@@ -30,13 +30,14 @@ from pretix.base.models import (
     QuestionAnswer, QuestionOption, Quota, Voucher,
 )
 from pretix.base.models.event import SubEvent
-from pretix.base.models.items import ItemAddOn, ItemBundle
+from pretix.base.models.items import ItemAddOn, ItemBundle, ItemMetaValue
 from pretix.base.services.tickets import invalidate_cache
 from pretix.base.signals import quota_availability
 from pretix.control.forms.item import (
     CategoryForm, ItemAddOnForm, ItemAddOnsFormSet, ItemBundleForm,
-    ItemBundleFormSet, ItemCreateForm, ItemUpdateForm, ItemVariationForm,
-    ItemVariationsFormSet, QuestionForm, QuestionOptionForm, QuotaForm,
+    ItemBundleFormSet, ItemCreateForm, ItemMetaValueForm, ItemUpdateForm,
+    ItemVariationForm, ItemVariationsFormSet, QuestionForm, QuestionOptionForm,
+    QuotaForm,
 )
 from pretix.control.permissions import (
     EventPermissionRequiredMixin, event_permission_required,
@@ -939,6 +940,41 @@ class ItemDetailMixin(SingleObjectMixin):
             raise Http404(_("The requested item does not exist."))
 
 
+class MetaDataEditorMixin:
+    meta_form = ItemMetaValueForm
+    meta_model = ItemMetaValue
+
+    @cached_property
+    def meta_forms(self):
+        if hasattr(self, 'object') and self.object:
+            val_instances = {
+                v.property_id: v for v in self.object.meta_values.all()
+            }
+        else:
+            val_instances = {}
+
+        formlist = []
+
+        for p in self.request.event.item_meta_properties.all():
+            formlist.append(self._make_meta_form(p, val_instances))
+        return formlist
+
+    def _make_meta_form(self, p, val_instances):
+        return self.meta_form(
+            prefix='prop-{}'.format(p.pk),
+            property=p,
+            instance=val_instances.get(p.pk, self.meta_model(property=p, item=self.object)),
+            data=(self.request.POST if self.request.method == "POST" else None)
+        )
+
+    def save_meta(self):
+        for f in self.meta_forms:
+            if f.cleaned_data.get('value'):
+                f.save()
+            elif f.instance and f.instance.pk:
+                f.instance.delete()
+
+
 class ItemCreate(EventPermissionRequiredMixin, CreateView):
     form_class = ItemCreateForm
     template_name = 'pretixcontrol/item/create.html'
@@ -985,7 +1021,7 @@ class ItemCreate(EventPermissionRequiredMixin, CreateView):
         return super().form_invalid(form)
 
 
-class ItemUpdateGeneral(ItemDetailMixin, EventPermissionRequiredMixin, UpdateView):
+class ItemUpdateGeneral(ItemDetailMixin, EventPermissionRequiredMixin, MetaDataEditorMixin, UpdateView):
     form_class = ItemUpdateForm
     template_name = 'pretixcontrol/item/index.html'
     permission = 'can_change_items'
@@ -1038,7 +1074,7 @@ class ItemUpdateGeneral(ItemDetailMixin, EventPermissionRequiredMixin, UpdateVie
     def post(self, request, *args, **kwargs):
         self.get_object()
         form = self.get_form()
-        if self.is_valid(form):
+        if self.is_valid(form) and all([f.is_valid() for f in self.meta_forms]):
             return self.form_valid(form)
         else:
             return self.form_invalid(form)
@@ -1088,6 +1124,7 @@ class ItemUpdateGeneral(ItemDetailMixin, EventPermissionRequiredMixin, UpdateVie
 
     @transaction.atomic
     def form_valid(self, form):
+        self.save_meta()
         messages.success(self.request, _('Your changes have been saved.'))
         if form.has_changed() or any(f.has_changed() for f in self.plugin_forms):
             data = {
@@ -1137,6 +1174,7 @@ class ItemUpdateGeneral(ItemDetailMixin, EventPermissionRequiredMixin, UpdateVie
     def get_context_data(self, **kwargs):
         ctx = super().get_context_data()
         ctx['plugin_forms'] = self.plugin_forms
+        ctx['meta_forms'] = self.meta_forms
         ctx['formsets'] = self.formsets
 
         if not ctx['item'].active and ctx['item'].bundled_with.count() > 0:

src/pretix/control/views/orderimport.py

@@ -29,7 +29,7 @@ class ImportView(EventPermissionRequiredMixin, TemplateView):
                 'event': request.event.slug,
                 'organizer': request.organizer.slug,
             }))
-        if not request.FILES['file'].name.endswith('.csv'):
+        if not request.FILES['file'].name.lower().endswith('.csv'):
             messages.error(request, _('Please only upload CSV files.'))
             return redirect(reverse('control:event.orders.import', kwargs={
                 'event': request.event.slug,