Bump to 2.7.0

Update from Weblate

doc/admin/config.rst

@@ -125,6 +125,8 @@ Example::
     Indicates if the database backend is a MySQL/MariaDB Galera cluster and
     turns on some optimizations/special case handlers. Default: ``False``
 
+.. _`config-replica`:
+
 Database replica settings
 -------------------------
 
@@ -142,6 +144,8 @@ Example::
     [replica]
     host=192.168.0.2
 
+.. _`config-urls`:
+
 URLs
 ----
 

doc/admin/index.rst

@@ -11,3 +11,4 @@ This documentation is for everyone who wants to install pretix on a server.
    installation/index
    config
    maintainance
+   scaling

doc/admin/installation/index.rst

@@ -1,3 +1,5 @@
+.. _`installation`:
+
 Installation guide
 ==================
 

doc/admin/scaling.rst

@@ -0,0 +1,236 @@
+.. _`scaling`:
+
+Scaling guide
+=============
+
+Our :ref:`installation guide <installation>` only covers "small-scale" setups, by which we mostly mean
+setups that run on a **single (virtual) machine** and do not encounter large traffic peaks.
+
+We do not offer an installation guide for larger-scale setups of pretix, mostly because we believe that
+there is no one-size-fits-all solution for this and the desired setup highly depends on your use case,
+the platform you run pretix on, and your technical capabilities. We do not recommend trying set up pretix
+in a multi-server environment if you do not already have experience with managing server clusters.
+
+This document is intended to give you a general idea on what issues you will encounter when you scale up
+and what you should think of.
+
+.. tip::
+
+   If you require more help on this, we're happy to help. Our pretix Enterprise support team has built
+   and helped building, scaling and load-testing pretix installations at any scale and we're looking
+   forward to work with you on fine-tuning your system. If you intend to sell **more than a thousand
+   tickets in a very short amount of time**, we highly recommend reaching out and at least talking this
+   through. Just get in touch at sales@pretix.eu!
+
+Scaling reasons
+---------------
+
+There's mainly two reasons to scale up a pretix installation beyond a single server:
+
+* **Availability:** Distributing pretix over multiple servers can allow you to survive failure of one or more single machines, leading to a higher uptime and reliability of your system.
+
+* **Traffic and throughput:** Distributing pretix over multiple servers can allow you to process more web requests and ticket sales at the same time.
+
+You are very unlikely to require scaling for other reasons, such as having too much data in your database.
+
+Components
+----------
+
+A pretix installation usually consists of the following components which run performance-relevant processes:
+
+* ``pretix-web`` is the Django-based web application that serves all user interaction.
+
+* ``pretix-worker`` is a Celery-based application that processes tasks that should be run asynchronously outside of the web application process.
+
+* A **SQL database** keeps all the important data and processes the actual transactions. We recommend using PostgreSQL, but MySQL/MariaDB works as well.
+
+* A **web server** that terminates TLS and HTTP connections and forwards them to ``pretix-web``. In some cases, e.g. when serving static files, the web servers might return a response directly. We recommend using ``nginx``.
+
+* A **redis** server responsible for the communication between ``pretix-web`` and ``pretix-worker``, as well as for caching.
+
+* A directory of **media files** such as user-uploaded files or generated files (tickets, invoices, …) that are created and used by ``pretix-web``, ``pretix-worker`` and the web server.
+
+In the following, we will discuss the scaling behavior of every component individually. In general, you can run all of the components
+on the same server, but you can just as well distribute every component to its own server, or even use multiple servers for some single
+components.
+
+.. warning::
+
+   When setting up your system, don't forget about security. In a multi-server environment,
+   you need to take special care to ensure that no unauthorized access to your database
+   is possible through the network and that it's not easy to wiretap your connections. We
+   recommend a rigorous use of firewalls and encryption on all communications. You can
+   ensure this either on an application level (such as using the TLS support in your
+   database) or on a network level with a VPN solution.
+
+Web server
+""""""""""
+
+Your web server is at the very front of your installation. It will need to absorb all of the traffic, and it should be able to
+at least show a decent error message, even when everything else fails. Luckily, web servers are really fast these days, so this
+can be achieved without too much work.
+
+We recommend reading up on tuning your web server for high concurrency. For nginx, this means thinking about the number of worker
+processes and the number of connections each worker process accepts. Double-check that TLS session caching works, because TLS
+handshakes can get really expensive.
+
+During a traffic peak, your web server will be able to make us of more CPU resources, while memory usage will stay comparatively low,
+so if you invest in more hardware here, invest in more and faster CPU cores.
+
+Make sure that pretix' static files (such as CSS and JavaScript assets) as well as user-uploaded media files (event logos, etc)
+are served directly by your web server and your web server caches them in-memory (nginx does it by default) and sets useful
+headers for client-side caching. As an additional performance improvement, you can turn of access logging for these types of files.
+If you want, you can even farm out serving static files to a different web server entirely and :ref:`configure pretix to reference
+them from a different URL <config-urls>`.
+
+.. tip::
+
+   If you expect *really high traffic* for your very popular event, you might want to do some rate limiting on this layer, or,
+   if you want to ensure a fair and robust first-come-first-served experience and prefer letting users wait over showing them
+   errors, consider a queuing solution. We're happy to provide you with such systems, just get in touch at sales@pretix.eu.
+
+pretix-web
+""""""""""
+
+The ``pretix-web`` process does not carry any internal state can be easily started on as many machines as you like, and you can
+use the load balancing features of your frontend web server to redirect to all of them.
+
+You can adjust the number of processes in the ``gunicorn`` command line, and we recommend choosing roughly two times the number
+of CPU cores available. Under load, the memory consumption of ``pretix-web`` will stay comparatively constant, while the CPU usage
+will increase a lot. Therefore, if you can add more or faster CPU cores, you will be able to serve more users.
+
+pretix-worker
+"""""""""""""
+
+The ``pretix-worker`` process performs all operations that are not directly executed in the request-response-cycle of ``pretix-web``.
+Just like ``pretix-web`` you can easily start up as many instances as you want on different machines to share the work. As long as they
+all talk to the same redis server, they will all receive tasks from ``pretix-web``, work on them and post their result back.
+You can configure the number of threads that run tasks in parallel through the ``--concurrency`` command line option of ``celery``.
+
+Just like ``pretix-web``, this process is mostly heavy on CPU, disk IO and network IO, although memory peaks can occur e.g. during the
+generation of large PDF files, so we recommend having some reserves here.
+
+``pretix-worker`` performs a variety of tasks which are of different importance.
+Some of them are mission-critical and need to be run quickly even during high load (such as
+creating a cart or an order), others are irrelevant and can easily run later (such as
+distributing tickets on the waiting list). You can fine-tune the capacity you assign to each
+of these tasks by running ``pretix-worker`` processes that only work on a specific **queue**.
+For example, you could have three servers dedicated only to process order creations and one
+server dedicated only to sending emails. This allows you to set priorities and also protects
+you from e.g. a slow email server lowering your ticket throughput.
+
+You can do so by specifying one or more queues on the ``celery`` command line of this process, such as ``celery -A pretix.celery_app worker -Q notifications,mail``. Currently,
+the following queues exist:
+
+* ``checkout`` -- This queue handles everything related to carts and orders and thereby everything required to process a sale. This includes adding and deleting items from carts as well as creating and canceling orders.
+
+* ``mail`` -- This queue handles sending of outgoing emails.
+
+* ``notifications`` -- This queue handles the processing of any outgoing notifications, such as email notifications to admin users (except for the actual sending) or API notifications to registered webhooks.
+
+* ``background`` -- This queue handles tasks that are expected to take long or have no human waiting for their result immediately, such as refreshing caches, re-generating CSS files, assigning tickets on the waiting list or parsing bank data files.
+
+* ``default`` -- This queue handles everything else with "medium" or unassigned priority, most prominently the generation of files for tickets, invoices, badges, admin exports, etc.
+
+Media files
+"""""""""""
+
+Both ``pretix-web``, ``pretix-worker`` and in some cases your webserver need to work with
+media files. Media files are all files generated *at runtime* by the software. This can
+include files uploaded by the event organizers, such as the event logo, files uploaded by
+ticket buyers (if you use such features) or files generated by the software, such as
+ticket files, invoice PDFs, data exports or customized CSS files.
+
+Those files are by default stored to the ``media/`` sub-folder of the data directory given
+in the ``pretix.cfg`` configuration file. Inside that ``media/`` folder, you will find a
+``pub/`` folder containing the subset of files that should be publicly accessible through
+the web server. Everything else only needs to be accessible by ``pretix-web`` and
+``pretix-worker`` themselves.
+
+If you distribute ``pretix-web`` or ``pretix-worker`` across more than one machine, you
+**must** make sure that they all have access to a shared storage to read and write these
+files, otherwise you **will** run into errors with the user interface.
+
+The easiest solution for this is probably to store them on a NFS server that you mount
+on each of the other servers.
+
+Since we use Django's file storage mechanism internally, you can in theory also use a object-storage solution like Amazon S3, Ceph, or Minio to store these files, although we currently do not expose this through pretix' configuration file and this would require you to ship your own variant of ``pretix/settings.py`` and reference it through the ``DJANGO_SETTINGS_MODULE`` environment variable.
+
+At pretix.eu, we use a custom-built `object storage cluster`_.
+
+SQL database
+""""""""""""
+
+One of the most critical parts of the whole setup is the SQL database -- and certainly the
+hardest to scale. Tuning relational databases is an art form, and while there's lots of
+material on it on the internet, there's not a single recipe that you can apply to every case.
+
+As a general rule of thumb, the more resources you can give your databases, the better.
+Most databases will happily use all CPU cores available, but only use memory up to an amount
+you configure, so make sure to set this memory usage as high as you can afford. Having more
+memory available allows your database to make more use of caching, which is usually good.
+
+Scaling your database to multiple machines needs to be treated with great caution. It's a
+good to have a replica of your database for availability reasons. In case your primary
+database server fails, you can easily switch over to the replica and continue working.
+
+However, using database replicas for performance gains is much more complicated. When using
+replicated database systems, you are always trading in consistency or availability to get
+additional performance and the consequences of this can be subtle and it is important
+that you have a deep understanding of the semantics of your replication mechanism.
+
+.. warning::
+
+   Using an off-the-shelf database proxy solution that redirects read queries to your
+   replicas and write queries to your primary database **will lead to very nasty bugs.**
+
+   As an example, if you buy a ticket, pretix first needs to calculate how many tickets
+   are left to sell. If this calculation is done on a database replica that lags behind
+   even for fractions of a second, the decision to allow selling the ticket will be made
+   on out-of-data data and you can end up with more tickets sold than configured. Similarly,
+   you could imagine situations leading to double payments etc.
+
+If you do have a replica, you *can* tell pretix about it :ref:`in your configuration <config-replica>`.
+This way, pretix can offload complex read-only queries to the replica when it is safe to do so.
+As of pretix 2.7, this is mainly used for search queries in the backend and for rendering the
+product list and event lists in the frontend, but we plan on expanding this in the future.
+
+Therefore, for now our clear recommendation is: Try to scale your database vertically and put
+it on the most powerful machine you have available.
+
+redis
+"""""
+
+While redis is a very important part that glues together some of the components, it isn't used
+heavily and can usually handle a fairly large pretix installation easily on a single modern
+CPU core.
+Having some memory available is good in case of e.g. lots of tasks queuing up during a traffic peak, but we wouldn't expect ever needing more than a gigabyte of it.
+
+Feel free to set up a redis cluster for availability – but you won't need it for performance in a long time.
+
+The limitations
+---------------
+
+Up to a certain point, pretix scales really well. However, there are a few things that we consider
+even more important than scalability, and those are correctness and reliability. We want you to be
+able to trust that pretix will not sell more tickets than you intended or run into similar error
+cases.
+
+Combined with pretix' flexibility and complexity, especially around vouchers and quotas, this creates
+some hard issues. In many cases, we need to fall back to event-global locking for some actions which
+are likely to run with high concurrency and cause harm.
+
+For every event, only one of these locking actions can be run at the same time. Examples for this are
+adding products limited by a quota to a cart, adding items to a cart using a voucher or placing an order
+consisting of cart positions that don't have a valid reservation for much longer. In these cases, it is
+currently not realistically possible to exceed selling **approx. 500 orders per minute per event**, even
+if you add more hardware.
+If you have an unlimited number of tickets, we can apply fewer locking and we've reached **approx.
+1500 orders per minute per event** in benchmarks, although even more should be possible.
+
+We're working to reduce the number of cases in which this is relevant and thereby improve the possible
+throughput. If you want to use pretix for an event with 10,000+ tickets that are likely to be sold out
+within minutes, please get in touch to discuss possible solutions. We'll work something out for you!
+
+
+.. _object storage cluster: https://behind.pretix.eu/2018/03/20/high-available-cdn/

doc/api/resources/checkinlists.rst

@@ -336,11 +336,24 @@ Order position endpoints
 
    The order positions endpoint has been extended by the filter queries ``voucher`` and ``voucher__code``.
 
+.. versionchanged:: 2.7
+
+   The resource now contains the new attributes ``require_attention`` and ``order__status`` and accepts the new
+   ``ignore_status`` filter. The ``attendee_name`` field is now "smart" (see below) and the redemption endpoint
+   returns ``400`` instead of ``404`` on tickets which are known but not paid.
+
 .. http:get:: /api/v1/organizers/(organizer)/events/(event)/checkinlists/(list)/positions/
 
    Returns a list of all order positions within a given event. The result is the same as
-   the :ref:`order-position-resource`, with one important difference: the ``checkins`` value will only include
-   check-ins for the selected list.
+   the :ref:`order-position-resource`, with the following differences:
+
+   * The ``checkins`` value will only include check-ins for the selected list.
+
+   * An additional boolean property ``require_attention`` will inform you whether either the order or the item
+     have the ``checkin_attention`` flag set.
+
+   * If ``attendee_name`` is empty, it will automatically fall back to values from a parent product or from invoice
+     addresses.
 
    **Example request**:
 
@@ -407,6 +420,8 @@ Order position endpoints
       }
 
    :query integer page: The page number in case of a multi-page result set, default is 1
+   :query string ignore_status: If set to ``true``, results will be returned regardless of the state of
+                                 the order they belong to and you will need to do your own filtering by order status.
    :query string ordering: Manually set the ordering of results. Valid fields to be used are ``order__code``,
                            ``order__datetime``, ``positionid``, ``attendee_name``, ``last_checked_in`` and ``order__email``. Default:
                            ``attendee_name,positionid``
@@ -442,8 +457,15 @@ Order position endpoints
 .. http:get:: /api/v1/organizers/(organizer)/events/(event)/checkinlists/(list)/positions/(id)/
 
    Returns information on one order position, identified by its internal ID.
-   The result format is the same as the :ref:`order-position-resource`, with one important difference: the
-   ``checkins`` value will only include check-ins for the selected list.
+   The result is the same as the :ref:`order-position-resource`, with the following differences:
+
+   * The ``checkins`` value will only include check-ins for the selected list.
+
+   * An additional boolean property ``require_attention`` will inform you whether either the order or the item
+     have the ``checkin_attention`` flag set.
+
+   * If ``attendee_name`` is empty, it will automatically fall back to values from a parent product or from invoice
+     addresses.
 
    **Instead of an ID, you can also use the ``secret`` field as the lookup parameter.**
 
@@ -528,7 +550,8 @@ Order position endpoints
    :<json boolean force: Specifies that the check-in should succeed regardless of previous check-ins or required
                          questions that have not been filled. Defaults to ``false``.
    :<json boolean ignore_unpaid: Specifies that the check-in should succeed even if the order is in pending state.
-                                 Defaults to ``false``.
+                                 Defaults to ``false`` and only works when ``include_pending`` is set on the check-in
+                                 list.
    :<json string nonce: You can set this parameter to a unique random value to identify this check-in. If you're sending
                         this request twice with the same nonce, the second request will also succeed but will always
                         create only one check-in object even when the previous request was successful as well. This

doc/api/resources/item_variations.rst

@@ -18,12 +18,18 @@ default_price                         money (string)             The price set d
 price                                 money (string)             The price used for this variation. This is either the
                                                                  same as ``default_price`` if that value is set or equal
                                                                  to the item's ``default_price`` (read-only).
+original_price                        money (string)             An original price, shown for comparison, not used
+                                                                 for price calculations (or ``null``).
 active                                boolean                    If ``false``, this variation will not be sold or shown.
 description                           multi-lingual string       A public description of the variation. May contain
                                                                  Markdown syntax or can be ``null``.
 position                              integer                    An integer, used for sorting
 ===================================== ========================== =======================================================
 
+.. versionchanged:: 2.7
+
+   The attribute ``original_price`` has been added.
+
 .. versionchanged:: 1.12
 
    This resource has been added.
@@ -67,7 +73,8 @@ Endpoints
             },
             "position": 0,
             "default_price": "223.00",
-            "price": 223.0
+            "price": 223.0,
+            "original_price": null,
           },
           {
             "id": 3,
@@ -120,6 +127,7 @@ Endpoints
         },
         "default_price": "10.00",
         "price": "10.00",
+        "original_price": null,
         "active": true,
         "description": null,
         "position": 0
@@ -167,6 +175,7 @@ Endpoints
         "value": {"en": "Student"},
         "default_price": "10.00",
         "price": "10.00",
+        "original_price": null,
         "active": true,
         "description": null,
         "position": 0
@@ -216,6 +225,7 @@ Endpoints
         "value": {"en": "Student"},
         "default_price": "10.00",
         "price": "10.00",
+        "original_price": null,
         "active": false,
         "description": null,
         "position": 1

doc/api/resources/items.rst

@@ -29,7 +29,8 @@ free_price                            boolean                    If ``true``, cu
                                                                  they buy the product (however, the price can't be set
                                                                  lower than the price defined by ``default_price`` or
                                                                  otherwise).
-tax_rate                              decimal (string)           The VAT rate to be applied for this item.
+tax_rate                              decimal (string)           The VAT rate to be applied for this item (read-only,
+                                                                 set through ``tax_rule``).
 tax_rule                              integer                    The internal ID of the applied tax rule (or ``null``).
 admission                             boolean                    ``true`` for items that grant admission to the event
                                                                  (such as primary tickets) and ``false`` for others
@@ -81,6 +82,8 @@ variations                            list of objects            A list with one
 ├ price                               money (string)             The price used for this variation. This is either the
                                                                  same as ``default_price`` if that value is set or equal
                                                                  to the item's ``default_price``.
+├ original_price                      money (string)             An original price, shown for comparison, not used
+                                                                 for price calculations (or ``null``).
 ├ active                              boolean                    If ``false``, this variation will not be sold or shown.
 ├ description                         multi-lingual string       A public description of the variation. May contain
                                                                  Markdown syntax or can be ``null``.
@@ -105,6 +108,10 @@ bundles                               list of objects            Definition of b
                                                                  taxation. This is not added to the price.
 ===================================== ========================== =======================================================
 
+.. versionchanged:: 2.7
+
+   The attribute ``original_price`` has been added for ``variations``.
+
 .. versionchanged:: 1.7
 
    The attribute ``tax_rule`` has been added. ``tax_rate`` is kept for compatibility. The attribute
@@ -207,6 +214,7 @@ Endpoints
                  "value": {"en": "Student"},
                  "default_price": "10.00",
                  "price": "10.00",
+                 "original_price": null,
                  "active": true,
                  "description": null,
                  "position": 0
@@ -215,6 +223,7 @@ Endpoints
                  "value": {"en": "Regular"},
                  "default_price": null,
                  "price": "23.00",
+                 "original_price": null,
                  "active": true,
                  "description": null,
                  "position": 1
@@ -296,6 +305,7 @@ Endpoints
              "value": {"en": "Student"},
              "default_price": "10.00",
              "price": "10.00",
+             "original_price": null,
              "active": true,
              "description": null,
              "position": 0
@@ -304,6 +314,7 @@ Endpoints
              "value": {"en": "Regular"},
              "default_price": null,
              "price": "23.00",
+             "original_price": null,
              "active": true,
              "description": null,
              "position": 1
@@ -365,6 +376,7 @@ Endpoints
              "value": {"en": "Student"},
              "default_price": "10.00",
              "price": "10.00",
+             "original_price": null,
              "active": true,
              "description": null,
              "position": 0
@@ -373,6 +385,7 @@ Endpoints
              "value": {"en": "Regular"},
              "default_price": null,
              "price": "23.00",
+             "original_price": null,
              "active": true,
              "description": null,
              "position": 1
@@ -423,6 +436,7 @@ Endpoints
              "value": {"en": "Student"},
              "default_price": "10.00",
              "price": "10.00",
+             "original_price": null,
              "active": true,
              "description": null,
              "position": 0
@@ -431,6 +445,7 @@ Endpoints
              "value": {"en": "Regular"},
              "default_price": null,
              "price": "23.00",
+             "original_price": null,
              "active": true,
              "description": null,
              "position": 1
@@ -512,6 +527,7 @@ Endpoints
              "value": {"en": "Student"},
              "default_price": "10.00",
              "price": "10.00",
+             "original_price": null,
              "active": true,
              "description": null,
              "position": 0
@@ -520,6 +536,7 @@ Endpoints
              "value": {"en": "Regular"},
              "default_price": null,
              "price": "23.00",
+             "original_price": null,
              "active": true,
              "description": null,
              "position": 1

doc/api/resources/questions.rst

@@ -30,6 +30,7 @@ type                                  string                     The expected ty
                                                                  * ``D`` – date
                                                                  * ``H`` – time
                                                                  * ``W`` – date and time
+                                                                 * ``CC`` – country code (ISO 3666-1 alpha-2)
 required                              boolean                    If ``true``, the question needs to be filled out.
 position                              integer                    An integer, used for sorting
 items                                 list of integers           List of item IDs this question is assigned to.
@@ -38,6 +39,8 @@ identifier                            string                     An arbitrary st
 ask_during_checkin                    boolean                    If ``true``, this question will not be asked while
                                                                  buying the ticket, but will show up when redeeming
                                                                  the ticket instead.
+hidden                                boolean                    If ``true``, the question will only be shown in the
+                                                                 backend.
 options                               list of objects            In case of question type ``C`` or ``M``, this lists the
                                                                  available objects. Only writable during creation,
                                                                  use separate endpoint to modify this later.
@@ -68,6 +71,10 @@ dependency_value                      string                     The value ``dep
   Write methods have been added. The attribute ``identifier`` has been added to both the resource itself and the
   options resource. The ``position`` attribute has been added to the options resource.
 
+.. versionchanged:: 2.7
+
+  The attribute ``hidden`` and the question type ``CC`` have been added.
+
 Endpoints
 ---------
 
@@ -110,6 +117,7 @@ Endpoints
             "position": 1,
             "identifier": "WY3TP9SL",
             "ask_during_checkin": false,
+            "hidden": false,
             "dependency_question": null,
             "dependency_value": null,
             "options": [
@@ -177,6 +185,7 @@ Endpoints
         "position": 1,
         "identifier": "WY3TP9SL",
         "ask_during_checkin": false,
+        "hidden": false,
         "dependency_question": null,
         "dependency_value": null,
         "options": [
@@ -228,6 +237,7 @@ Endpoints
         "items": [1, 2],
         "position": 1,
         "ask_during_checkin": false,
+        "hidden": false,
         "dependency_question": null,
         "dependency_value": null,
         "options": [
@@ -261,6 +271,7 @@ Endpoints
         "position": 1,
         "identifier": "WY3TP9SL",
         "ask_during_checkin": false,
+        "hidden": false,
         "dependency_question": null,
         "dependency_value": null,
         "options": [
@@ -332,6 +343,7 @@ Endpoints
         "position": 2,
         "identifier": "WY3TP9SL",
         "ask_during_checkin": false,
+        "hidden": false,
         "dependency_question": null,
         "dependency_value": null,
         "options": [

doc/api/resources/subevents.rst

@@ -20,6 +20,8 @@ name                                  multi-lingual string       The sub-event's
 event                                 string                     The slug of the parent event
 active                                boolean                    If ``true``, the sub-event ticket shop is publicly
                                                                  available.
+is_public                             boolean                    If ``true``, the sub-event ticket shop is publicly
+                                                                 shown in lists.
 date_from                             datetime                   The sub-event's start date
 date_to                               datetime                   The sub-event's end date (or ``null``)
 date_admission                        datetime                   The sub-event's admission date (or ``null``)
@@ -48,6 +50,10 @@ meta_data                             dict                       Values set for
 .. versionchanged:: 2.6
    The write operations ``POST``, ``PATCH``, ``PUT``, and ``DELETE`` have been added.
 
+.. versionchanged:: 2.7
+
+   The attribute ``is_public`` has been added.
+
 Endpoints
 ---------
 
@@ -81,6 +87,7 @@ Endpoints
             "name": {"en": "First Sample Conference"},
             "event": "sampleconf",
             "active": false,
+            "is_public": true,
             "date_from": "2017-12-27T10:00:00Z",
             "date_to": null,
             "date_admission": null,
@@ -128,6 +135,7 @@ Endpoints
       {
         "name": {"en": "First Sample Conference"},
         "active": false,
+        "is_public": true,
         "date_from": "2017-12-27T10:00:00Z",
         "date_to": null,
         "date_admission": null,
@@ -157,6 +165,7 @@ Endpoints
         "id": 1,
         "name": {"en": "First Sample Conference"},
         "active": false,
+        "is_public": true,
         "date_from": "2017-12-27T10:00:00Z",
         "date_to": null,
         "date_admission": null,
@@ -207,6 +216,7 @@ Endpoints
         "name": {"en": "First Sample Conference"},
         "event": "sampleconf",
         "active": false,
+        "is_public": true,
         "date_from": "2017-12-27T10:00:00Z",
         "date_to": null,
         "date_admission": null,
@@ -270,6 +280,7 @@ Endpoints
         "name": {"en": "New Subevent Name"},
         "event": "sampleconf",
         "active": false,
+        "is_public": true,
         "date_from": "2017-12-27T10:00:00Z",
         "date_to": null,
         "date_admission": null,
@@ -353,6 +364,7 @@ Endpoints
             "name": {"en": "First Sample Conference"},
             "event": "sampleconf",
             "active": false,
+            "is_public": true,
             "date_from": "2017-12-27T10:00:00Z",
             "date_to": null,
             "date_admission": null,

doc/development/api/general.rst

@@ -12,7 +12,7 @@ Core
 
 .. automodule:: pretix.base.signals
    :members: periodic_task, event_live_issues, event_copy_data, email_filter, register_notification_types,
-      item_copy_data, register_sales_channels
+      item_copy_data, register_sales_channels, register_global_settings
 
 Order events
 """"""""""""
@@ -26,11 +26,7 @@ Frontend
 --------
 
 .. automodule:: pretix.presale.signals
-   :members: html_head, html_footer, footer_link, front_page_top, front_page_bottom, fee_calculation_for_cart, contact_form_fields, question_form_fields, checkout_confirm_messages, checkout_confirm_page_content, checkout_all_optional, html_page_header, sass_preamble, sass_postamble
-
-
-.. automodule:: pretix.presale.signals
-   :members: order_info, order_meta_from_request
+   :members: html_head, html_footer, footer_link, front_page_top, front_page_bottom, fee_calculation_for_cart, contact_form_fields, question_form_fields, checkout_confirm_messages, checkout_confirm_page_content, checkout_all_optional, html_page_header, sass_preamble, sass_postamble, checkout_flow_steps, order_info, order_meta_from_request
 
 Request flow
 """"""""""""

doc/development/api/plugins.rst

@@ -49,15 +49,19 @@ description        string               A more verbose description of what your
 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.
+compatibility      string               Specifier for compatible pretix versions.
 ================== ==================== ===========================================================
 
 A working example would be::
 
-    from django.apps import AppConfig
+    try:
+        from pretix.base.plugins import PluginConfig
+    except ImportError:
+        raise RuntimeError("Please use pretix 2.7 or above to run this plugin!")
     from django.utils.translation import ugettext_lazy as _
 
 
-    class PaypalApp(AppConfig):
+    class PaypalApp(PluginConfig):
         name = 'pretix_paypal'
         verbose_name = _("PayPal")
 
@@ -68,6 +72,7 @@ A working example would be::
             visible = True
             restricted = False
             description = _("This plugin allows you to receive payments via PayPal")
+            compatibility = "pretix>=2.7.0"
 
 
     default_app_config = 'pretix_paypal.PaypalApp'

doc/development/implementation/models.rst

@@ -23,7 +23,7 @@ Organizers and events
    :members:
 
 .. autoclass:: pretix.base.models.Event
-   :members: get_date_from_display, get_time_from_display, get_date_to_display, get_date_range_display, presale_has_ended, presale_is_running, cache, lock, get_plugins, get_mail_backend, payment_term_last, get_payment_providers, get_invoice_renderers, active_subevents, invoice_renderer, settings
+   :members: get_date_from_display, get_time_from_display, get_date_to_display, get_date_range_display, presale_has_ended, presale_is_running, cache, lock, get_plugins, get_mail_backend, payment_term_last, get_payment_providers, get_invoice_renderers, invoice_renderer, settings
 
 .. autoclass:: pretix.base.models.SubEvent
    :members: get_date_from_display, get_time_from_display, get_date_to_display, get_date_range_display, presale_has_ended, presale_is_running

doc/spelling_wordlist.txt

@@ -15,6 +15,7 @@ boolean
 booleans
 cancelled
 casted
+Ceph
 checkbox
 checksum
 config
@@ -53,6 +54,7 @@ linters
 memcached
 metadata
 middleware
+Minio
 mixin
 mixins
 multi
@@ -94,6 +96,7 @@ renderer
 renderers
 reportlab
 SaaS
+scalability
 screenshot
 scss
 searchable
@@ -124,6 +127,7 @@ unconfigured
 unix
 unprefixed
 untrusted
+uptime
 username
 url
 versa

src/pretix/__init__.py

@@ -1 +1 @@
-__version__ = "2.6.0"
+__version__ = "2.7.0"

src/pretix/api/auth/permission.py

@@ -1,7 +1,8 @@
 from rest_framework.permissions import SAFE_METHODS, BasePermission
 
 from pretix.api.models import OAuthAccessToken
-from pretix.base.models import Device, Event
+from pretix.base.models import Device, Event, User
+from pretix.base.models.auth import SuperuserPermissionSet
 from pretix.base.models.organizer import Organizer, TeamAPIToken
 from pretix.helpers.security import (
     SessionInvalid, SessionReauthRequired, assert_session_valid,
@@ -37,10 +38,13 @@ class EventPermission(BasePermission):
                 slug=request.resolver_match.kwargs['event'],
                 organizer__slug=request.resolver_match.kwargs['organizer'],
             ).select_related('organizer').first()
-            if not request.event or not perm_holder.has_event_permission(request.event.organizer, request.event):
+            if not request.event or not perm_holder.has_event_permission(request.event.organizer, request.event, request=request):
                 return False
             request.organizer = request.event.organizer
-            request.eventpermset = perm_holder.get_event_permission_set(request.organizer, request.event)
+            if isinstance(perm_holder, User) and perm_holder.has_active_staff_session(request.session.session_key):
+                request.eventpermset = SuperuserPermissionSet()
+            else:
+                request.eventpermset = perm_holder.get_event_permission_set(request.organizer, request.event)
 
             if required_permission and required_permission not in request.eventpermset:
                 return False
@@ -49,9 +53,12 @@ class EventPermission(BasePermission):
             request.organizer = Organizer.objects.filter(
                 slug=request.resolver_match.kwargs['organizer'],
             ).first()
-            if not request.organizer or not perm_holder.has_organizer_permission(request.organizer):
+            if not request.organizer or not perm_holder.has_organizer_permission(request.organizer, request=request):
                 return False
-            request.orgapermset = perm_holder.get_organizer_permission_set(request.organizer)
+            if isinstance(perm_holder, User) and perm_holder.has_active_staff_session(request.session.session_key):
+                request.orgapermset = SuperuserPermissionSet()
+            else:
+                request.orgapermset = perm_holder.get_organizer_permission_set(request.organizer)
 
             if required_permission and required_permission not in request.orgapermset:
                 return False

src/pretix/api/middleware.py

@@ -21,15 +21,15 @@ class IdempotencyMiddleware:
         if not request.path.startswith('/api/'):
             return self.get_response(request)
 
-        if not request.META.get('HTTP_X_IDEMPOTENCY_KEY'):
+        if not request.headers.get('X-Idempotency-Key'):
             return self.get_response(request)
 
         auth_hash_parts = '{}:{}'.format(
-            request.META.get('HTTP_AUTHORIZATION', ''),
+            request.headers.get('Authorization', ''),
             request.COOKIES.get(settings.SESSION_COOKIE_NAME, '')
         )
         auth_hash = sha1(auth_hash_parts.encode()).hexdigest()
-        idempotency_key = request.META.get('HTTP_X_IDEMPOTENCY_KEY', '')
+        idempotency_key = request.headers.get('X-Idempotency-Key', '')
 
         with transaction.atomic():
             call, created = ApiCall.objects.select_for_update().get_or_create(

src/pretix/api/models.py

@@ -77,6 +77,9 @@ class WebHook(models.Model):
     all_events = models.BooleanField(default=True, verbose_name=_("All events (including newly created ones)"))
     limit_events = models.ManyToManyField('pretixbase.Event', verbose_name=_("Limit to events"), blank=True)
 
+    class Meta:
+        ordering = ('id',)
+
     @property
     def action_types(self):
         return [

src/pretix/api/serializers/event.py

@@ -199,7 +199,7 @@ class SubEventSerializer(I18nAwareModelSerializer):
     class Meta:
         model = SubEvent
         fields = ('id', 'name', 'date_from', 'date_to', 'active', 'date_admission',
-                  'presale_start', 'presale_end', 'location', 'event',
+                  'presale_start', 'presale_end', 'location', 'event', 'is_public',
                   'item_price_overrides', 'variation_price_overrides', 'meta_data')
 
     def validate(self, data):
@@ -212,8 +212,8 @@ class SubEventSerializer(I18nAwareModelSerializer):
         Event.clean_dates(data.get('date_from'), data.get('date_to'))
         Event.clean_presale(data.get('presale_start'), data.get('presale_end'))
 
-        SubEvent.clean_items(event, [item['item'] for item in full_data.get('subeventitem_set')])
-        SubEvent.clean_variations(event, [item['variation'] for item in full_data.get('subeventitemvariation_set')])
+        SubEvent.clean_items(event, [item['item'] for item in full_data.get('subeventitem_set', [])])
+        SubEvent.clean_variations(event, [item['variation'] for item in full_data.get('subeventitemvariation_set', [])])
         return data
 
     def validate_item_price_overrides(self, data):

src/pretix/api/serializers/item.py

@@ -19,7 +19,7 @@ class InlineItemVariationSerializer(I18nAwareModelSerializer):
     class Meta:
         model = ItemVariation
         fields = ('id', 'value', 'active', 'description',
-                  'position', 'default_price', 'price')
+                  'position', 'default_price', 'price', 'original_price')
 
 
 class ItemVariationSerializer(I18nAwareModelSerializer):
@@ -29,7 +29,7 @@ class ItemVariationSerializer(I18nAwareModelSerializer):
     class Meta:
         model = ItemVariation
         fields = ('id', 'value', 'active', 'description',
-                  'position', 'default_price', 'price')
+                  'position', 'default_price', 'price', 'original_price')
 
 
 class InlineItemBundleSerializer(serializers.ModelSerializer):
@@ -207,7 +207,8 @@ class QuestionSerializer(I18nAwareModelSerializer):
     class Meta:
         model = Question
         fields = ('id', 'question', 'type', 'required', 'items', 'options', 'position',
-                  'ask_during_checkin', 'identifier', 'dependency_question', 'dependency_value')
+                  'ask_during_checkin', 'identifier', 'dependency_question', 'dependency_value',
+                  'hidden')
 
     def validate_identifier(self, value):
         Question._clean_identifier(self.context['event'], value, self.instance)

src/pretix/api/serializers/order.py

@@ -14,8 +14,8 @@ from pretix.api.serializers.i18n import I18nAwareModelSerializer
 from pretix.base.channels import get_all_sales_channels
 from pretix.base.i18n import language
 from pretix.base.models import (
-    Checkin, Invoice, InvoiceAddress, InvoiceLine, Order, OrderPosition,
-    Question, QuestionAnswer,
+    Checkin, Invoice, InvoiceAddress, InvoiceLine, Item, ItemVariation, Order,
+    OrderPosition, Question, QuestionAnswer, SubEvent,
 )
 from pretix.base.models.orders import (
     CartPosition, OrderFee, OrderPayment, OrderRefund,
@@ -179,6 +179,55 @@ class OrderPositionSerializer(I18nAwareModelSerializer):
             self.fields.pop('pdf_data')
 
 
+class RequireAttentionField(serializers.Field):
+    def to_representation(self, instance: OrderPosition):
+        return instance.order.checkin_attention or instance.item.checkin_attention
+
+
+class AttendeeNameField(serializers.Field):
+    def to_representation(self, instance: OrderPosition):
+        an = instance.attendee_name
+        if not an:
+            if instance.addon_to_id:
+                an = instance.addon_to.attendee_name
+        if not an:
+            try:
+                an = instance.order.invoice_address.name
+            except InvoiceAddress.DoesNotExist:
+                pass
+        return an
+
+
+class AttendeeNamePartsField(serializers.Field):
+    def to_representation(self, instance: OrderPosition):
+        an = instance.attendee_name
+        p = instance.attendee_name_parts
+        if not an:
+            if instance.addon_to_id:
+                an = instance.addon_to.attendee_name
+                p = instance.addon_to.attendee_name_parts
+        if not an:
+            try:
+                p = instance.order.invoice_address.name_parts
+            except InvoiceAddress.DoesNotExist:
+                pass
+        return p
+
+
+class CheckinListOrderPositionSerializer(OrderPositionSerializer):
+    require_attention = RequireAttentionField(source='*')
+    attendee_name = AttendeeNameField(source='*')
+    attendee_name_parts = AttendeeNamePartsField(source='*')
+    order__status = serializers.SlugRelatedField(read_only=True, slug_field='status', source='order')
+
+    class Meta:
+        model = OrderPosition
+        fields = ('id', 'order', 'positionid', 'item', 'variation', 'price', 'attendee_name', 'attendee_name_parts',
+                  'attendee_email', 'voucher', 'tax_rate', 'tax_value', 'secret', 'addon_to', 'subevent', 'checkins',
+                  'downloads', 'answers', 'tax_rule', 'pseudonymization_id', 'pdf_data', 'require_attention',
+                  'order__status')
+
+
 class OrderPaymentTypeField(serializers.Field):
     # TODO: Remove after pretix 2.2
     def to_representation(self, instance: Order):
@@ -288,6 +337,23 @@ class OrderSerializer(I18nAwareModelSerializer):
         return instance
 
 
+class PriceCalcSerializer(serializers.Serializer):
+    item = serializers.PrimaryKeyRelatedField(queryset=Item.objects.none(), required=False, allow_null=True)
+    variation = serializers.PrimaryKeyRelatedField(queryset=ItemVariation.objects.none(), required=False, allow_null=True)
+    subevent = serializers.PrimaryKeyRelatedField(queryset=SubEvent.objects.none(), required=False, allow_null=True)
+    locale = serializers.CharField(allow_null=True, required=False)
+
+    def __init__(self, *args, **kwargs):
+        event = kwargs.pop('event')
+        super().__init__(*args, **kwargs)
+        self.fields['item'].queryset = event.items.all()
+        self.fields['variation'].queryset = ItemVariation.objects.filter(item__event=event)
+        if event.has_subevents:
+            self.fields['subevent'].queryset = event.subevents.all()
+        else:
+            del self.fields['subevent']
+
+
 class AnswerCreateSerializer(I18nAwareModelSerializer):
 
     class Meta:

src/pretix/api/signals.py

@@ -23,4 +23,4 @@ def cleanup_webhook_logs(sender, **kwargs):
 
 @receiver(periodic_task)
 def cleanup_api_logs(sender, **kwargs):
-    ApiCall.objects.filter(datetime__lte=now() - timedelta(hours=24)).delete()
+    ApiCall.objects.filter(created__lte=now() - timedelta(hours=24)).delete()

src/pretix/api/views/__init__.py

@@ -31,10 +31,10 @@ class RichOrderingFilter(OrderingFilter):
 class ConditionalListView:
 
     def list(self, request, **kwargs):
-        if_modified_since = request.META.get('HTTP_IF_MODIFIED_SINCE')
+        if_modified_since = request.headers.get('If-Modified-Since')
         if if_modified_since:
             if_modified_since = parse_http_date_safe(if_modified_since)
-        if_unmodified_since = request.META.get('HTTP_IF_UNMODIFIED_SINCE')
+        if_unmodified_since = request.headers.get('If-Unmodified-Since')
         if if_unmodified_since:
             if_unmodified_since = parse_http_date_safe(if_unmodified_since)
         if not hasattr(request, 'event'):

src/pretix/api/views/checkin.py

@@ -7,13 +7,13 @@ from django.utils.functional import cached_property
 from django.utils.timezone import now
 from django_filters.rest_framework import DjangoFilterBackend, FilterSet
 from rest_framework import viewsets
-from rest_framework.decorators import detail_route
+from rest_framework.decorators import action
 from rest_framework.fields import DateTimeField
 from rest_framework.response import Response
 
 from pretix.api.serializers.checkin import CheckinListSerializer
 from pretix.api.serializers.item import QuestionSerializer
-from pretix.api.serializers.order import OrderPositionSerializer
+from pretix.api.serializers.order import CheckinListOrderPositionSerializer
 from pretix.api.views import RichOrderingFilter
 from pretix.api.views.order import OrderPositionFilter
 from pretix.base.models import (
@@ -77,7 +77,7 @@ class CheckinListViewSet(viewsets.ModelViewSet):
         )
         super().perform_destroy(instance)
 
-    @detail_route(methods=['GET'])
+    @action(detail=True, methods=['GET'])
     def status(self, *args, **kwargs):
         clist = self.get_object()
         cqs = Checkin.objects.filter(
@@ -153,7 +153,7 @@ class CheckinOrderPositionFilter(OrderPositionFilter):
 
 
 class CheckinListPositionViewSet(viewsets.ReadOnlyModelViewSet):
-    serializer_class = OrderPositionSerializer
+    serializer_class = CheckinListOrderPositionSerializer
     queryset = OrderPosition.objects.none()
     filter_backends = (DjangoFilterBackend, RichOrderingFilter)
     ordering = ('attendee_name_cached', 'positionid')
@@ -189,7 +189,7 @@ class CheckinListPositionViewSet(viewsets.ReadOnlyModelViewSet):
         except ValueError:
             raise Http404()
 
-    def get_queryset(self):
+    def get_queryset(self, ignore_status=False):
         cqs = Checkin.objects.filter(
             position_id=OuterRef('pk'),
             list_id=self.checkinlist.pk
@@ -199,11 +199,15 @@ class CheckinListPositionViewSet(viewsets.ReadOnlyModelViewSet):
 
         qs = OrderPosition.objects.filter(
             order__event=self.request.event,
-            order__status__in=[Order.STATUS_PAID, Order.STATUS_PENDING] if self.checkinlist.include_pending else [Order.STATUS_PAID],
             subevent=self.checkinlist.subevent
         ).annotate(
             last_checked_in=Subquery(cqs)
         )
+
+        if self.request.query_params.get('ignore_status', 'false') != 'true' and not ignore_status:
+            qs = qs.filter(
+                order__status__in=[Order.STATUS_PAID, Order.STATUS_PENDING] if self.checkinlist.include_pending else [Order.STATUS_PAID]
+            )
         if self.request.query_params.get('pdf_data', 'false') == 'true':
             qs = qs.prefetch_related(
                 Prefetch(
@@ -225,7 +229,7 @@ class CheckinListPositionViewSet(viewsets.ReadOnlyModelViewSet):
                     )
                 ))
             ).select_related(
-                'item', 'variation', 'item__category', 'addon_to'
+                'item', 'variation', 'item__category', 'addon_to', 'order', 'order__invoice_address'
             )
         else:
             qs = qs.prefetch_related(
@@ -235,19 +239,19 @@ class CheckinListPositionViewSet(viewsets.ReadOnlyModelViewSet):
                 ),
                 'answers', 'answers__options', 'answers__question',
                 Prefetch('addons', OrderPosition.objects.select_related('item', 'variation'))
-            ).select_related('item', 'variation', 'order', 'addon_to', 'order__invoice_address')
+            ).select_related('item', 'variation', 'order', 'addon_to', 'order__invoice_address', 'order')
 
         if not self.checkinlist.all_products:
             qs = qs.filter(item__in=self.checkinlist.limit_products.values_list('id', flat=True))
 
         return qs
 
-    @detail_route(methods=['POST'])
+    @action(detail=True, methods=['POST'])
     def redeem(self, *args, **kwargs):
         force = bool(self.request.data.get('force', False))
         ignore_unpaid = bool(self.request.data.get('ignore_unpaid', False))
         nonce = self.request.data.get('nonce')
-        op = self.get_object()
+        op = self.get_object(ignore_status=True)
 
         if 'datetime' in self.request.data:
             dt = DateTimeField().to_internal_value(self.request.data.get('datetime'))
@@ -281,7 +285,7 @@ class CheckinListPositionViewSet(viewsets.ReadOnlyModelViewSet):
             return Response({
                 'status': 'incomplete',
                 'require_attention': op.item.checkin_attention or op.order.checkin_attention,
-                'position': OrderPositionSerializer(op, context=self.get_serializer_context()).data,
+                'position': CheckinListOrderPositionSerializer(op, context=self.get_serializer_context()).data,
                 'questions': [
                     QuestionSerializer(q).data for q in e.questions
                 ]
@@ -291,17 +295,17 @@ class CheckinListPositionViewSet(viewsets.ReadOnlyModelViewSet):
                 'status': 'error',
                 'reason': e.code,
                 'require_attention': op.item.checkin_attention or op.order.checkin_attention,
-                'position': OrderPositionSerializer(op, context=self.get_serializer_context()).data
+                'position': CheckinListOrderPositionSerializer(op, context=self.get_serializer_context()).data
             }, status=400)
         else:
             return Response({
                 'status': 'ok',
                 'require_attention': op.item.checkin_attention or op.order.checkin_attention,
-                'position': OrderPositionSerializer(op, context=self.get_serializer_context()).data
+                'position': CheckinListOrderPositionSerializer(op, context=self.get_serializer_context()).data
             }, status=201)
 
-    def get_object(self):
-        queryset = self.filter_queryset(self.get_queryset())
+    def get_object(self, ignore_status=False):
+        queryset = self.filter_queryset(self.get_queryset(ignore_status=ignore_status))
         if self.kwargs['pk'].isnumeric():
             obj = get_object_or_404(queryset, Q(pk=self.kwargs['pk']) | Q(secret=self.kwargs['pk']))
         else:

src/pretix/api/views/item.py

@@ -4,7 +4,7 @@ from django.shortcuts import get_object_or_404
 from django.utils.functional import cached_property
 from django_filters.rest_framework import DjangoFilterBackend, FilterSet
 from rest_framework import viewsets
-from rest_framework.decorators import detail_route
+from rest_framework.decorators import action
 from rest_framework.exceptions import PermissionDenied
 from rest_framework.filters import OrderingFilter
 from rest_framework.response import Response
@@ -499,7 +499,7 @@ class QuotaViewSet(ConditionalListView, viewsets.ModelViewSet):
             )
         super().perform_destroy(instance)
 
-    @detail_route(methods=['get'])
+    @action(detail=True, methods=['get'])
     def availability(self, request, *args, **kwargs):
         quota = self.get_object()
 

src/pretix/api/views/order.py

@@ -12,7 +12,7 @@ from django.utils.timezone import make_aware, now
 from django.utils.translation import ugettext as _
 from django_filters.rest_framework import DjangoFilterBackend, FilterSet
 from rest_framework import mixins, serializers, status, viewsets
-from rest_framework.decorators import detail_route
+from rest_framework.decorators import action
 from rest_framework.exceptions import (
     APIException, NotFound, PermissionDenied, ValidationError,
 )
@@ -24,14 +24,16 @@ from pretix.api.models import OAuthAccessToken
 from pretix.api.serializers.order import (
     InvoiceSerializer, OrderCreateSerializer, OrderPaymentSerializer,
     OrderPositionSerializer, OrderRefundCreateSerializer,
-    OrderRefundSerializer, OrderSerializer,
+    OrderRefundSerializer, OrderSerializer, PriceCalcSerializer,
 )
+from pretix.base.i18n import language
 from pretix.base.models import (
-    CachedCombinedTicket, CachedTicket, Device, Event, Invoice, Order,
-    OrderPayment, OrderPosition, OrderRefund, Quota, TeamAPIToken,
+    CachedCombinedTicket, CachedTicket, Device, Event, Invoice, InvoiceAddress,
+    Order, OrderPayment, OrderPosition, OrderRefund, Quota, TeamAPIToken,
     generate_position_secret, generate_secret,
 )
 from pretix.base.payment import PaymentException
+from pretix.base.services import tickets
 from pretix.base.services.invoices import (
     generate_cancellation, generate_invoice, invoice_pdf, invoice_qualified,
     regenerate_invoice,
@@ -41,10 +43,12 @@ from pretix.base.services.orders import (
     OrderChangeManager, OrderError, approve_order, cancel_order, deny_order,
     extend_order, mark_order_expired, mark_order_refunded,
 )
+from pretix.base.services.pricing import get_price
 from pretix.base.services.tickets import generate
 from pretix.base.signals import (
     order_modified, order_placed, register_ticket_outputs,
 )
+from pretix.base.templatetags.money import money_filter
 
 
 class OrderFilter(FilterSet):
@@ -127,7 +131,7 @@ class OrderViewSet(viewsets.ModelViewSet):
         serializer = self.get_serializer(queryset, many=True)
         return Response(serializer.data, headers={'X-Page-Generated': date})
 
-    @detail_route(url_name='download', url_path='download/(?P<output>[^/]+)')
+    @action(detail=True, url_name='download', url_path='download/(?P<output>[^/]+)')
     def download(self, request, output, **kwargs):
         provider = self._get_output_provider(output)
         order = self.get_object()
@@ -149,7 +153,7 @@ class OrderViewSet(viewsets.ModelViewSet):
             )
             return resp
 
-    @detail_route(methods=['POST'])
+    @action(detail=True, methods=['POST'])
     def mark_paid(self, request, **kwargs):
         order = self.get_object()
 
@@ -190,7 +194,7 @@ class OrderViewSet(viewsets.ModelViewSet):
             status=status.HTTP_400_BAD_REQUEST
         )
 
-    @detail_route(methods=['POST'])
+    @action(detail=True, methods=['POST'])
     def mark_canceled(self, request, **kwargs):
         send_mail = request.data.get('send_email', True)
         cancellation_fee = request.data.get('cancellation_fee', None)
@@ -224,7 +228,7 @@ class OrderViewSet(viewsets.ModelViewSet):
             )
         return self.retrieve(request, [], **kwargs)
 
-    @detail_route(methods=['POST'])
+    @action(detail=True, methods=['POST'])
     def approve(self, request, **kwargs):
         send_mail = request.data.get('send_email', True)
 
@@ -242,7 +246,7 @@ class OrderViewSet(viewsets.ModelViewSet):
             return Response({'detail': str(e)}, status=status.HTTP_400_BAD_REQUEST)
         return self.retrieve(request, [], **kwargs)
 
-    @detail_route(methods=['POST'])
+    @action(detail=True, methods=['POST'])
     def deny(self, request, **kwargs):
         send_mail = request.data.get('send_email', True)
         comment = request.data.get('comment', '')
@@ -260,7 +264,7 @@ class OrderViewSet(viewsets.ModelViewSet):
             return Response({'detail': str(e)}, status=status.HTTP_400_BAD_REQUEST)
         return self.retrieve(request, [], **kwargs)
 
-    @detail_route(methods=['POST'])
+    @action(detail=True, methods=['POST'])
     def mark_pending(self, request, **kwargs):
         order = self.get_object()
 
@@ -279,7 +283,7 @@ class OrderViewSet(viewsets.ModelViewSet):
         )
         return self.retrieve(request, [], **kwargs)
 
-    @detail_route(methods=['POST'])
+    @action(detail=True, methods=['POST'])
     def mark_expired(self, request, **kwargs):
         order = self.get_object()
 
@@ -296,7 +300,7 @@ class OrderViewSet(viewsets.ModelViewSet):
         )
         return self.retrieve(request, [], **kwargs)
 
-    @detail_route(methods=['POST'])
+    @action(detail=True, methods=['POST'])
     def mark_refunded(self, request, **kwargs):
         order = self.get_object()
 
@@ -313,7 +317,7 @@ class OrderViewSet(viewsets.ModelViewSet):
         )
         return self.retrieve(request, [], **kwargs)
 
-    @detail_route(methods=['POST'])
+    @action(detail=True, methods=['POST'])
     def create_invoice(self, request, **kwargs):
         order = self.get_object()
         has_inv = order.invoices.exists() and not (
@@ -345,7 +349,7 @@ class OrderViewSet(viewsets.ModelViewSet):
             status=status.HTTP_201_CREATED
         )
 
-    @detail_route(methods=['POST'])
+    @action(detail=True, methods=['POST'])
     def resend_link(self, request, **kwargs):
         order = self.get_object()
         if not order.email:
@@ -359,7 +363,7 @@ class OrderViewSet(viewsets.ModelViewSet):
             status=status.HTTP_204_NO_CONTENT
         )
 
-    @detail_route(methods=['POST'])
+    @action(detail=True, methods=['POST'])
     @transaction.atomic
     def regenerate_secrets(self, request, **kwargs):
         order = self.get_object()
@@ -370,6 +374,8 @@ class OrderViewSet(viewsets.ModelViewSet):
         order.save(update_fields=['secret'])
         CachedTicket.objects.filter(order_position__order=order).delete()
         CachedCombinedTicket.objects.filter(order=order).delete()
+        tickets.invalidate_cache.apply_async(kwargs={'event': self.request.event.pk,
+                                                     'order': order.pk})
         order.log_action(
             'pretix.event.order.secret.changed',
             user=self.request.user,
@@ -377,7 +383,7 @@ class OrderViewSet(viewsets.ModelViewSet):
         )
         return self.retrieve(request, [], **kwargs)
 
-    @detail_route(methods=['POST'])
+    @action(detail=True, methods=['POST'])
     def extend(self, request, **kwargs):
         new_date = request.data.get('expires', None)
         force = request.data.get('force', False)
@@ -508,6 +514,7 @@ class OrderViewSet(viewsets.ModelViewSet):
                 )
 
             serializer.save()
+            tickets.invalidate_cache.apply_async(kwargs={'event': serializer.instance.event.pk, 'order': serializer.instance.pk})
 
         if 'invoice_address' in self.request.data:
             order_modified.send(sender=serializer.instance.event, order=serializer.instance)
@@ -619,7 +626,84 @@ class OrderPositionViewSet(mixins.DestroyModelMixin, viewsets.ReadOnlyModelViewS
                 return prov
         raise NotFound('Unknown output provider.')
 
-    @detail_route(url_name='download', url_path='download/(?P<output>[^/]+)')
+    @action(detail=True, methods=['POST'], url_name='price_calc')
+    def price_calc(self, request, *args, **kwargs):
+        """
+        This calculates the price assuming a change of product or subevent. This endpoint
+        is deliberately not documented and considered a private API, only to be used by
+        pretix' web interface.
+
+        Sample input:
+
+        {
+            "item": 2,
+            "variation": null,
+            "subevent": 3
+        }
+
+        Sample output:
+
+        {
+            "gross": "2.34",
+            "gross_formatted": "2,34",
+            "net": "2.34",
+            "tax": "0.00",
+            "rate": "0.00",
+            "name": "VAT"
+        }
+        """
+        serializer = PriceCalcSerializer(data=request.data, event=request.event)
+        serializer.is_valid(raise_exception=True)
+        data = serializer.validated_data
+        pos = self.get_object()
+
+        try:
+            ia = pos.order.invoice_address
+        except InvoiceAddress.DoesNotExist:
+            ia = InvoiceAddress()
+
+        kwargs = {
+            'item': pos.item,
+            'variation': pos.variation,
+            'voucher': pos.voucher,
+            'subevent': pos.subevent,
+            'addon_to': pos.addon_to,
+            'invoice_address': ia,
+        }
+
+        if data.get('item'):
+            item = data.get('item')
+            kwargs['item'] = item
+
+            if item.has_variations:
+                variation = data.get('variation') or pos.variation
+                if not variation:
+                    raise ValidationError('No variation given')
+                if variation.item != item:
+                    raise ValidationError('Variation does not belong to item')
+                kwargs['variation'] = variation
+            else:
+                variation = None
+                kwargs['variation'] = None
+
+            if pos.voucher and not pos.voucher.applies_to(item, variation):
+                kwargs['voucher'] = None
+
+        if data.get('subevent'):
+            kwargs['subevent'] = data.get('subevent')
+
+        price = get_price(**kwargs)
+        with language(data.get('locale') or self.request.event.settings.locale):
+            return Response({
+                'gross': price.gross,
+                'gross_formatted': money_filter(price.gross, self.request.event.currency, hide_currency=True),
+                'net': price.net,
+                'rate': price.rate,
+                'name': str(price.name),
+                'tax': price.tax,
+            })
+
+    @action(detail=True, url_name='download', url_path='download/(?P<output>[^/]+)')
     def download(self, request, output, **kwargs):
         provider = self._get_output_provider(output)
         pos = self.get_object()
@@ -670,7 +754,7 @@ class PaymentViewSet(viewsets.ReadOnlyModelViewSet):
         order = get_object_or_404(Order, code=self.kwargs['order'], event=self.request.event)
         return order.payments.all()
 
-    @detail_route(methods=['POST'])
+    @action(detail=True, methods=['POST'])
     def confirm(self, request, **kwargs):
         payment = self.get_object()
         force = request.data.get('force', False)
@@ -691,7 +775,7 @@ class PaymentViewSet(viewsets.ReadOnlyModelViewSet):
             pass
         return self.retrieve(request, [], **kwargs)
 
-    @detail_route(methods=['POST'])
+    @action(detail=True, methods=['POST'])
     def refund(self, request, **kwargs):
         payment = self.get_object()
         amount = serializers.DecimalField(max_digits=10, decimal_places=2).to_internal_value(
@@ -756,7 +840,7 @@ class PaymentViewSet(viewsets.ReadOnlyModelViewSet):
                     payment.order.save(update_fields=['status', 'expires'])
             return Response(OrderRefundSerializer(r).data, status=status.HTTP_200_OK)
 
-    @detail_route(methods=['POST'])
+    @action(detail=True, methods=['POST'])
     def cancel(self, request, **kwargs):
         payment = self.get_object()
 
@@ -784,7 +868,7 @@ class RefundViewSet(CreateModelMixin, viewsets.ReadOnlyModelViewSet):
         order = get_object_or_404(Order, code=self.kwargs['order'], event=self.request.event)
         return order.refunds.all()
 
-    @detail_route(methods=['POST'])
+    @action(detail=True, methods=['POST'])
     def cancel(self, request, **kwargs):
         refund = self.get_object()
 
@@ -801,7 +885,7 @@ class RefundViewSet(CreateModelMixin, viewsets.ReadOnlyModelViewSet):
             }, user=self.request.user if self.request.user.is_authenticated else None, auth=self.request.auth)
         return self.retrieve(request, [], **kwargs)
 
-    @detail_route(methods=['POST'])
+    @action(detail=True, methods=['POST'])
     def process(self, request, **kwargs):
         refund = self.get_object()
 
@@ -826,7 +910,7 @@ class RefundViewSet(CreateModelMixin, viewsets.ReadOnlyModelViewSet):
             refund.order.save(update_fields=['status', 'expires'])
         return self.retrieve(request, [], **kwargs)
 
-    @detail_route(methods=['POST'])
+    @action(detail=True, methods=['POST'])
     def done(self, request, **kwargs):
         refund = self.get_object()
 
@@ -916,7 +1000,7 @@ class InvoiceViewSet(viewsets.ReadOnlyModelViewSet):
             nr=Concat('prefix', 'invoice_no')
         )
 
-    @detail_route()
+    @action(detail=True, )
     def download(self, request, **kwargs):
         invoice = self.get_object()
 
@@ -934,7 +1018,7 @@ class InvoiceViewSet(viewsets.ReadOnlyModelViewSet):
         resp['Content-Disposition'] = 'attachment; filename="{}.pdf"'.format(invoice.number)
         return resp
 
-    @detail_route(methods=['POST'])
+    @action(detail=True, methods=['POST'])
     def regenerate(self, request, **kwarts):
         inv = self.get_object()
         if inv.canceled:
@@ -953,7 +1037,7 @@ class InvoiceViewSet(viewsets.ReadOnlyModelViewSet):
             )
             return Response(status=204)
 
-    @detail_route(methods=['POST'])
+    @action(detail=True, methods=['POST'])
     def reissue(self, request, **kwarts):
         inv = self.get_object()
         if inv.canceled:

src/pretix/api/views/voucher.py

@@ -7,7 +7,7 @@ from django_filters.rest_framework import (
     BooleanFilter, DjangoFilterBackend, FilterSet,
 )
 from rest_framework import status, viewsets
-from rest_framework.decorators import list_route
+from rest_framework.decorators import action
 from rest_framework.exceptions import PermissionDenied
 from rest_framework.filters import OrderingFilter
 from rest_framework.response import Response
@@ -116,7 +116,7 @@ class VoucherViewSet(viewsets.ModelViewSet):
             instance.cartposition_set.all().delete()
             super().perform_destroy(instance)
 
-    @list_route(methods=['POST'])
+    @action(detail=False, methods=['POST'])
     def batch_create(self, request, *args, **kwargs):
         if any(self._predict_quota_check(d, None) for d in request.data):
             lockfn = request.event.lock

src/pretix/api/views/waitinglist.py

@@ -1,7 +1,7 @@
 import django_filters
 from django_filters.rest_framework import DjangoFilterBackend, FilterSet
 from rest_framework import viewsets
-from rest_framework.decorators import detail_route
+from rest_framework.decorators import action
 from rest_framework.exceptions import PermissionDenied, ValidationError
 from rest_framework.filters import OrderingFilter
 from rest_framework.response import Response
@@ -69,7 +69,7 @@ class WaitingListViewSet(viewsets.ModelViewSet):
         )
         super().perform_destroy(instance)
 
-    @detail_route(methods=['POST'])
+    @action(detail=True, methods=['POST'])
     def send_voucher(self, *args, **kwargs):
         try:
             self.get_object().send_voucher(

src/pretix/base/exporters/__init__.py

@@ -1,4 +1,5 @@
 from .answers import *  # noqa
+from .dekodi import *  # noqa
 from .invoices import *  # noqa
 from .json import *  # noqa
 from .mail import *  # noqa

src/pretix/base/exporters/dekodi.py

@@ -0,0 +1,219 @@
+import json
+from collections import OrderedDict
+from decimal import Decimal
+
+import dateutil
+from django import forms
+from django.core.serializers.json import DjangoJSONEncoder
+from django.dispatch import receiver
+from django.utils.translation import ugettext, ugettext_lazy
+
+from pretix.base.i18n import language
+from pretix.base.models import Invoice, OrderPayment
+
+from ..exporter import BaseExporter
+from ..signals import register_data_exporters
+
+
+class DekodiNREIExporter(BaseExporter):
+    identifier = 'dekodi_nrei'
+    verbose_name = 'dekodi NREI (JSON)'
+
+    # Specification: http://manuals.dekodi.de/nexuspub/schnittstellenbuch/
+
+    def _encode_invoice(self, invoice: Invoice):
+        p_last = invoice.order.payments.filter(state=[OrderPayment.PAYMENT_STATE_CONFIRMED, OrderPayment.PAYMENT_STATE_REFUNDED]).last()
+        gross_total = Decimal('0.00')
+        net_total = Decimal('0.00')
+
+        positions = []
+        for l in invoice.lines.all():
+            positions.append({
+                'ADes': l.description.replace("<br />", "\n"),
+                'ANetA': round(float((-1 if invoice.is_cancellation else 1) * l.net_value), 2),
+                'ANo': self.event.slug,
+                'AQ': -1 if invoice.is_cancellation else 1,
+                'AVatP': round(float(l.tax_rate), 2),
+                'DIDt': (l.subevent or invoice.order.event).date_from.isoformat().replace('Z', '+00:00'),
+                'PosGrossA': round(float(l.gross_value), 2),
+                'PosNetA': round(float(l.net_value), 2),
+            })
+            gross_total += l.gross_value
+            net_total += l.net_value
+
+        payments = []
+        paypal_email = None
+        for p in invoice.order.payments.filter(
+                state__in=(OrderPayment.PAYMENT_STATE_CONFIRMED, OrderPayment.PAYMENT_STATE_PENDING,
+                           OrderPayment.PAYMENT_STATE_CREATED, OrderPayment.PAYMENT_STATE_REFUNDED)
+        ):
+            if p.provider == 'paypal':
+                paypal_email = p.info_data.get('payer', {}).get('payer_info', {}).get('email')
+                try:
+                    ppid = p.info_data['transactions'][0]['related_resources'][0]['sale']['id']
+                except:
+                    ppid = p.info_data.get('id')
+                payments.append({
+                    'PTID': '1',
+                    'PTN': 'PayPal',
+                    'PTNo1': ppid,
+                    'PTNo2': p.info_data.get('id'),
+                    'PTNo7': round(float(p.amount), 2),
+                    'PTNo8': str(self.event.currency),
+                    'PTNo11': paypal_email or '',
+                    'PTNo15': p.full_id or '',
+                })
+            elif p.provider == 'banktransfer':
+                payments.append({
+                    'PTID': '4',
+                    'PTN': 'Vorkasse',
+                    'PTNo4': p.info_data.get('reference') or p.payment_provider._code(invoice.order),
+                    'PTNo7': round(float(p.amount), 2),
+                    'PTNo8': str(self.event.currency),
+                    'PTNo10': p.info_data.get('payer') or '',
+                    'PTNo14': p.info_data.get('date') or '',
+                    'PTNo15': p.full_id or '',
+                })
+            elif p.provider == 'sepadebit':
+                with language(invoice.order.locale):
+                    payments.append({
+                        'PTID': '5',
+                        'PTN': 'Lastschrift',
+                        'PTNo4': ugettext('Event ticket {event}-{code}').format(
+                            event=self.event.slug.upper(),
+                            code=invoice.order.code
+                        ),
+                        'PTNo5': p.info_data.get('iban') or '',
+                        'PTNo6': p.info_data.get('bic') or '',
+                        'PTNo7': round(float(p.amount), 2),
+                        'PTNo8': str(self.event.currency) or '',
+                        'PTNo9': p.info_data.get('date') or '',
+                        'PTNo10': p.info_data.get('account') or '',
+                        'PTNo14': p.info_data.get('reference') or '',
+                        'PTNo15': p.full_id or '',
+                    })
+            elif p.provider.startswith('stripe'):
+                src = p.info_data.get("source", "{}")
+                payments.append({
+                    'PTID': '81',
+                    'PTN': 'Stripe',
+                    'PTNo1': p.info_data.get("id") or '',
+                    'PTNo5': src.get("card", {}).get("last4") or '',
+                    'PTNo7': round(float(p.amount), 2) or '',
+                    'PTNo8': str(self.event.currency) or '',
+                    'PTNo10': src.get('owner', {}).get('verified_name') or src.get('owner', {}).get('name') or '',
+                    'PTNo15': p.full_id or '',
+                })
+            else:
+                payments.append({
+                    'PTID': '0',
+                    'PTN': p.provider,
+                    'PTNo7': round(float(p.amount), 2) or '',
+                    'PTNo8': str(self.event.currency) or '',
+                    'PTNo15': p.full_id or '',
+                })
+
+        payments = [
+            {
+                k: v for k, v in p.items() if v is not None
+            } for p in payments
+        ]
+
+        hdr = {
+            'C': str(invoice.invoice_to_country) or self.event.settings.invoice_address_from_country,
+            'CC': self.event.currency,
+            'City': invoice.invoice_to_city,
+            'CN': invoice.invoice_to_company,
+            'DIC': self.event.settings.invoice_address_from_country,
+            # DIC is  a little bit unclean, should be the event location's country
+            'DIDt': invoice.order.datetime.isoformat().replace('Z', '+00:00'),
+            'DT': '30' if invoice.is_cancellation else '10',
+            'EM': invoice.order.email,
+            'FamN': invoice.invoice_to_name.rsplit(' ', 1)[-1],
+            'FN': invoice.invoice_to_name.rsplit(' ', 1)[0] if ' ' in invoice.invoice_to_name else '',
+            'IDt': invoice.date.isoformat() + 'T08:00:00+01:00',
+            'INo': invoice.full_invoice_no,
+            'IsNet': invoice.reverse_charge,
+            'ODt': invoice.order.datetime.isoformat().replace('Z', '+00:00'),
+            'OID': invoice.order.code,
+            'SID': self.event.slug,
+            'SN': str(self.event),
+            'Str': invoice.invoice_to_street or '',
+            'TGrossA': round(float(gross_total), 2),
+            'TNetA': round(float(net_total), 2),
+            'TVatA': round(float(gross_total - net_total), 2),
+            'VatDp': False,
+            'Zip': invoice.invoice_to_zipcode
+        }
+        if not hdr['FamN'] and not hdr['CN']:
+            hdr['CN'] = "Unbekannter Kunde"
+
+        if invoice.refers:
+            hdr['PvrINo'] = invoice.refers.full_invoice_no
+        if p_last:
+            hdr['PmDt'] = p_last.payment_date.isoformat().replace('Z', '+00:00')
+        if paypal_email:
+            hdr['PPEm'] = paypal_email
+        if invoice.invoice_to_vat_id:
+            hdr['VatID'] = invoice.invoice_to_vat_id
+
+        return {
+            'IsValid': True,
+            'Hdr': hdr,
+            'InvcPstns': positions,
+            'PmIs': payments,
+            'ValidationMessage': ''
+        }
+
+    def render(self, form_data):
+        qs = self.event.invoices.select_related('order').prefetch_related('lines', 'lines__subevent')
+
+        if form_data.get('date_from'):
+            date_value = form_data.get('date_from')
+            if isinstance(date_value, str):
+                date_value = dateutil.parser.parse(date_value).date()
+            qs = qs.filter(date__gte=date_value)
+
+        if form_data.get('date_to'):
+            date_value = form_data.get('date_to')
+            if isinstance(date_value, str):
+                date_value = dateutil.parser.parse(date_value).date()
+            qs = qs.filter(date__lte=date_value)
+
+        jo = {
+            'Format': 'NREI',
+            'Version': '18.10.2.0',
+            'SourceSystem': 'pretix',
+            'Data': [
+                self._encode_invoice(i) for i in qs
+            ]
+        }
+        return '{}_nrei.json'.format(self.event.slug), 'application/json', json.dumps(jo, cls=DjangoJSONEncoder, indent=4)
+
+    @property
+    def export_form_fields(self):
+        return OrderedDict(
+            [
+                ('date_from',
+                 forms.DateField(
+                     label=ugettext_lazy('Start date'),
+                     widget=forms.DateInput(attrs={'class': 'datepickerfield'}),
+                     required=False,
+                     help_text=ugettext_lazy('Only include invoices issued on or after this date. Note that the invoice date does '
+                                             'not always correspond to the order or payment date.')
+                 )),
+                ('date_to',
+                 forms.DateField(
+                     label=ugettext_lazy('End date'),
+                     widget=forms.DateInput(attrs={'class': 'datepickerfield'}),
+                     required=False,
+                     help_text=ugettext_lazy('Only include invoices issued on or before this date. Note that the invoice date '
+                                             'does not always correspond to the order or payment date.')
+                 )),
+            ]
+        )
+
+
+@receiver(register_data_exporters, dispatch_uid="exporter_dekodi_nrei")
+def register_dekodi_export(sender, **kwargs):
+    return DekodiNREIExporter

src/pretix/base/exporters/orderlist.py

@@ -6,7 +6,7 @@ from django import forms
 from django.db.models import DateTimeField, F, Max, OuterRef, Subquery, Sum
 from django.dispatch import receiver
 from django.utils.formats import date_format, localize
-from django.utils.translation import ugettext as _, ugettext_lazy
+from django.utils.translation import pgettext, ugettext as _, ugettext_lazy
 
 from pretix.base.models import (
     InvoiceAddress, InvoiceLine, Order, OrderPosition,
@@ -269,6 +269,10 @@ class OrderListExporter(MultiSheetListExporter):
             _('Status'),
             _('Email'),
             _('Order date'),
+        ]
+        if self.event.has_subevents:
+            headers.append(pgettext('subevent', 'Date'))
+        headers += [
             _('Product'),
             _('Variation'),
             _('Price'),
@@ -311,6 +315,10 @@ class OrderListExporter(MultiSheetListExporter):
                 order.get_status_display(),
                 order.email,
                 order.datetime.astimezone(tz).strftime('%Y-%m-%d'),
+            ]
+            if self.event.has_subevents:
+                row.append(op.subevent)
+            row += [
                 str(op.item),
                 str(op.variation) if op.variation else '',
                 op.price,

src/pretix/base/forms/questions.py

@@ -12,6 +12,7 @@ from django.core.exceptions import ValidationError
 from django.utils.html import escape
 from django.utils.safestring import mark_safe
 from django.utils.translation import ugettext_lazy as _
+from django_countries.fields import CountryField
 
 from pretix.base.forms.widgets import (
     BusinessBooleanRadio, DatePickerWidget, SplitDateTimePickerWidget,
@@ -213,6 +214,14 @@ class BaseQuestionsForm(forms.Form):
                     widget=forms.Textarea,
                     initial=initial.answer if initial else None,
                 )
+            elif q.type == Question.TYPE_COUNTRYCODE:
+                field = CountryField().formfield(
+                    label=label, required=required,
+                    help_text=help_text,
+                    widget=forms.Select,
+                    empty_label='',
+                    initial=initial.answer if initial else None,
+                )
             elif q.type == Question.TYPE_CHOICE:
                 field = forms.ModelChoiceField(
                     queryset=q.options,

src/pretix/base/invoice.py

@@ -9,14 +9,17 @@ import vat_moss.exchange_rates
 from django.contrib.staticfiles import finders
 from django.dispatch import receiver
 from django.utils.formats import date_format, localize
-from django.utils.translation import get_language, pgettext, ugettext
+from django.utils.translation import (
+    get_language, pgettext, ugettext, ugettext_lazy,
+)
 from PIL.Image import BICUBIC
 from reportlab.lib import pagesizes
-from reportlab.lib.enums import TA_LEFT
+from reportlab.lib.enums import TA_LEFT, TA_RIGHT
 from reportlab.lib.styles import ParagraphStyle, StyleSheet1
 from reportlab.lib.units import mm
 from reportlab.lib.utils import ImageReader
 from reportlab.pdfbase import pdfmetrics
+from reportlab.pdfbase.pdfmetrics import stringWidth
 from reportlab.pdfbase.ttfonts import TTFont
 from reportlab.pdfgen.canvas import Canvas
 from reportlab.platypus import (
@@ -122,6 +125,7 @@ class BaseReportlabInvoiceRenderer(BaseInvoiceRenderer):
         """
         stylesheet = StyleSheet1()
         stylesheet.add(ParagraphStyle(name='Normal', fontName=self.font_regular, fontSize=10, leading=12))
+        stylesheet.add(ParagraphStyle(name='InvoiceFrom', parent=stylesheet['Normal']))
         stylesheet.add(ParagraphStyle(name='Heading1', fontName=self.font_bold, fontSize=15, leading=15 * 1.2))
         stylesheet.add(ParagraphStyle(name='FineprintHeading', fontName=self.font_bold, fontSize=8, leading=12))
         stylesheet.add(ParagraphStyle(name='Fineprint', fontName=self.font_regular, fontSize=8, leading=10))
@@ -254,49 +258,64 @@ class ClassicInvoiceRenderer(BaseReportlabInvoiceRenderer):
 
         canvas.restoreState()
 
+    invoice_to_width = 85 * mm
+    invoice_to_height = 50 * mm
+    invoice_to_left = 25 * mm
+    invoice_to_top = 52 * mm
+
     def _draw_invoice_to(self, canvas):
-        p = Paragraph(self.invoice.invoice_to.strip().replace('\n', '<br />\n'), style=self.stylesheet['Normal'])
-        p.wrapOn(canvas, 85 * mm, 50 * mm)
-        p_size = p.wrap(85 * mm, 50 * mm)
-        p.drawOn(canvas, 25 * mm, (297 - 52) * mm - p_size[1])
+        p = Paragraph(self.invoice.address_invoice_to.strip().replace('\n', '<br />\n'), style=self.stylesheet['Normal'])
+        p.wrapOn(canvas, self.invoice_to_width, self.invoice_to_height)
+        p_size = p.wrap(self.invoice_to_width, self.invoice_to_height)
+        p.drawOn(canvas, self.invoice_to_left, self.pagesize[1] - p_size[1] - self.invoice_to_top)
+
+    invoice_from_width = 70 * mm
+    invoice_from_height = 50 * mm
+    invoice_from_left = 25 * mm
+    invoice_from_top = 17 * mm
 
     def _draw_invoice_from(self, canvas):
-        p = Paragraph(self.invoice.full_invoice_from.strip().replace('\n', '<br />\n'), style=self.stylesheet['Normal'])
-        p.wrapOn(canvas, 70 * mm, 50 * mm)
-        p_size = p.wrap(70 * mm, 50 * mm)
-        p.drawOn(canvas, 25 * mm, (297 - 17) * mm - p_size[1])
-
-    def _on_first_page(self, canvas: Canvas, doc):
-        canvas.setCreator('pretix.eu')
-        canvas.setTitle(pgettext('invoice', 'Invoice {num}').format(num=self.invoice.number))
-
-        canvas.saveState()
-        canvas.setFont(self.font_regular, 8)
-
-        if self.invoice.order.testmode:
-            canvas.saveState()
-            canvas.setFont('OpenSansBd', 30)
-            canvas.setFillColorRGB(32, 0, 0)
-            canvas.drawRightString(self.pagesize[0] - 20 * mm, (297 - 100) * mm, ugettext('TEST MODE'))
-            canvas.restoreState()
-
-        for i, line in enumerate(self.invoice.footer_text.split('\n')[::-1]):
-            canvas.drawCentredString(self.pagesize[0] / 2, 25 + (3.5 * i) * mm, line.strip())
+        p = Paragraph(self.invoice.full_invoice_from.strip().replace('\n', '<br />\n'), style=self.stylesheet[
+            'InvoiceFrom'])
+        p.wrapOn(canvas, self.invoice_from_width, self.invoice_from_height)
+        p_size = p.wrap(self.invoice_from_width, self.invoice_from_height)
+        p.drawOn(canvas, self.invoice_from_left, self.pagesize[1] - p_size[1] - self.invoice_from_top)
 
+    def _draw_invoice_from_label(self, canvas):
         textobject = canvas.beginText(25 * mm, (297 - 15) * mm)
         textobject.setFont(self.font_bold, 8)
         textobject.textLine(self._upper(pgettext('invoice', 'Invoice from')))
         canvas.drawText(textobject)
 
-        self._draw_invoice_from(canvas)
-
+    def _draw_invoice_to_label(self, canvas):
         textobject = canvas.beginText(25 * mm, (297 - 50) * mm)
         textobject.setFont(self.font_bold, 8)
         textobject.textLine(self._upper(pgettext('invoice', 'Invoice to')))
         canvas.drawText(textobject)
 
-        self._draw_invoice_to(canvas)
+    logo_width = 25 * mm
+    logo_height = 25 * mm
+    logo_left = 95 * mm
+    logo_top = 13 * mm
+    logo_anchor = 'n'
 
+    def _draw_logo(self, canvas):
+        if self.invoice.event.settings.invoice_logo_image:
+            logo_file = self.invoice.event.settings.get('invoice_logo_image', binary_file=True)
+            ir = ThumbnailingImageReader(logo_file)
+            try:
+                ir.resize(self.logo_width, self.logo_height, 300)
+            except:
+                logger.exception("Can not resize image")
+                pass
+            canvas.drawImage(ir,
+                             self.logo_left,
+                             self.pagesize[1] - self.logo_height - self.logo_top,
+                             width=self.logo_width, height=self.logo_height,
+                             preserveAspectRatio=True, anchor=self.logo_anchor,
+                             mask='auto')
+
+    def _draw_metadata(self, canvas):
         textobject = canvas.beginText(125 * mm, (297 - 38) * mm)
         textobject.setFont(self.font_bold, 8)
         textobject.textLine(self._upper(pgettext('invoice', 'Order code')))
@@ -348,37 +367,37 @@ class ClassicInvoiceRenderer(BaseReportlabInvoiceRenderer):
 
         canvas.drawText(textobject)
 
-        if self.invoice.event.settings.invoice_logo_image:
-            logo_file = self.invoice.event.settings.get('invoice_logo_image', binary_file=True)
-            ir = ThumbnailingImageReader(logo_file)
-            try:
-                ir.resize(25 * mm, 25 * mm, 300)
-            except:
-                logger.exception("Can not resize image")
-                pass
-            canvas.drawImage(ir,
-                             95 * mm, (297 - 38) * mm,
-                             width=25 * mm, height=25 * mm,
-                             preserveAspectRatio=True, anchor='n',
-                             mask='auto')
+    event_left = 125 * mm
+    event_top = 17 * mm
+    event_width = 65 * mm
+    event_height = 50 * mm
 
+    def _draw_event_label(self, canvas):
+        textobject = canvas.beginText(125 * mm, (297 - 15) * mm)
+        textobject.setFont(self.font_bold, 8)
+        textobject.textLine(self._upper(pgettext('invoice', 'Event')))
+        canvas.drawText(textobject)
+
+    def _draw_event(self, canvas):
         def shorten(txt):
             txt = str(txt)
             p = Paragraph(txt.strip().replace('\n', '<br />\n'), style=self.stylesheet['Normal'])
-            p_size = p.wrap(65 * mm, 50 * mm)
+            p_size = p.wrap(self.event_width, self.event_height)
 
             while p_size[1] > 2 * self.stylesheet['Normal'].leading:
                 txt = ' '.join(txt.replace('…', '').split()[:-1]) + '…'
                 p = Paragraph(txt.strip().replace('\n', '<br />\n'), style=self.stylesheet['Normal'])
-                p_size = p.wrap(65 * mm, 50 * mm)
+                p_size = p.wrap(self.event_width, self.event_height)
             return txt
 
         if not self.invoice.event.has_subevents:
             if self.invoice.event.settings.show_date_to and self.invoice.event.date_to:
                 p_str = (
-                    shorten(self.invoice.event.name) + '\n' + pgettext('invoice', '{from_date}\nuntil {to_date}').format(
+                    shorten(self.invoice.event.name) + '\n' +
+                    pgettext('invoice', '{from_date}\nuntil {to_date}').format(
                         from_date=self.invoice.event.get_date_from_display(),
-                        to_date=self.invoice.event.get_date_to_display())
+                        to_date=self.invoice.event.get_date_to_display()
+                    )
                 )
             else:
                 p_str = (
@@ -388,15 +407,38 @@ class ClassicInvoiceRenderer(BaseReportlabInvoiceRenderer):
             p_str = shorten(self.invoice.event.name)
 
         p = Paragraph(p_str.strip().replace('\n', '<br />\n'), style=self.stylesheet['Normal'])
-        p.wrapOn(canvas, 65 * mm, 50 * mm)
-        p_size = p.wrap(65 * mm, 50 * mm)
-        p.drawOn(canvas, 125 * mm, (297 - 17) * mm - p_size[1])
+        p.wrapOn(canvas, self.event_width, self.event_height)
+        p_size = p.wrap(self.event_width, self.event_height)
+        p.drawOn(canvas, self.event_left, self.pagesize[1] - self.event_top - p_size[1])
+        self._draw_event_label(canvas)
 
-        textobject = canvas.beginText(125 * mm, (297 - 15) * mm)
-        textobject.setFont(self.font_bold, 8)
-        textobject.textLine(self._upper(pgettext('invoice', 'Event')))
-        canvas.drawText(textobject)
+    def _draw_footer(self, canvas):
+        canvas.setFont(self.font_regular, 8)
+        for i, line in enumerate(self.invoice.footer_text.split('\n')[::-1]):
+            canvas.drawCentredString(self.pagesize[0] / 2, 25 + (3.5 * i) * mm, line.strip())
 
+    def _draw_testmode(self, canvas):
+        if self.invoice.order.testmode:
+            canvas.saveState()
+            canvas.setFont('OpenSansBd', 30)
+            canvas.setFillColorRGB(32, 0, 0)
+            canvas.drawRightString(self.pagesize[0] - 20 * mm, (297 - 100) * mm, ugettext('TEST MODE'))
+            canvas.restoreState()
+
+    def _on_first_page(self, canvas: Canvas, doc):
+        canvas.setCreator('pretix.eu')
+        canvas.setTitle(pgettext('invoice', 'Invoice {num}').format(num=self.invoice.number))
+
+        canvas.saveState()
+        self._draw_footer(canvas)
+        self._draw_testmode(canvas)
+        self._draw_invoice_from_label(canvas)
+        self._draw_invoice_from(canvas)
+        self._draw_invoice_to_label(canvas)
+        self._draw_invoice_to(canvas)
+        self._draw_metadata(canvas)
+        self._draw_logo(canvas)
+        self._draw_event(canvas)
         canvas.restoreState()
 
     def _get_first_page_frames(self, doc):
@@ -434,6 +476,13 @@ class ClassicInvoiceRenderer(BaseReportlabInvoiceRenderer):
                 self.stylesheet['Normal']
             ))
 
+        if self.invoice.invoice_to_vat_id:
+            story.append(Paragraph(
+                pgettext('invoice', 'Customer VAT ID') + ':<br />' +
+                bleach.clean(self.invoice.invoice_to_vat_id, tags=[]).replace("\n", "<br />\n"),
+                self.stylesheet['Normal']
+            ))
+
         if self.invoice.invoice_to_beneficiary:
             story.append(Paragraph(
                 pgettext('invoice', 'Beneficiary') + ':<br />' +
@@ -554,6 +603,7 @@ class ClassicInvoiceRenderer(BaseReportlabInvoiceRenderer):
             colwidths = [a * doc.width for a in (.25, .15, .15, .15, .3)]
             table = Table(tdata, colWidths=colwidths, repeatRows=2, hAlign=TA_LEFT)
             table.setStyle(TableStyle(tstyledata))
+            story.append(Spacer(5 * mm, 5 * mm))
             story.append(KeepTogether([
                 Paragraph(pgettext('invoice', 'Included taxes'), self.stylesheet['FineprintHeading']),
                 table
@@ -607,6 +657,114 @@ class ClassicInvoiceRenderer(BaseReportlabInvoiceRenderer):
         return story
 
 
+class Modern1Renderer(ClassicInvoiceRenderer):
+    identifier = 'modern1'
+    verbose_name = ugettext_lazy('Modern Invoice Renderer (pretix 2.7)')
+    bottom_margin = 16.9 * mm
+    top_margin = 16.9 * mm
+    right_margin = 20 * mm
+    invoice_to_height = 27.3 * mm
+    invoice_to_width = 80 * mm
+    invoice_to_left = 25 * mm
+    invoice_to_top = (40 + 17.7) * mm
+    invoice_from_left = 125 * mm
+    invoice_from_top = 50 * mm
+    invoice_from_width = pagesizes.A4[0] - invoice_from_left - right_margin
+    invoice_from_height = 50 * mm
+
+    logo_width = 75 * mm
+    logo_height = 25 * mm
+    logo_left = pagesizes.A4[0] - logo_width - right_margin
+    logo_top = top_margin
+    logo_anchor = 'e'
+
+    event_left = 25 * mm
+    event_top = top_margin
+    event_width = 80 * mm
+    event_height = 25 * mm
+
+    def _get_stylesheet(self):
+        stylesheet = super()._get_stylesheet()
+        stylesheet.add(ParagraphStyle(name='Sender', fontName=self.font_regular, fontSize=8, leading=10))
+        stylesheet['InvoiceFrom'].alignment = TA_RIGHT
+        return stylesheet
+
+    def _draw_invoice_from(self, canvas):
+        if not self.invoice.invoice_from:
+            return
+        c = self.invoice.address_invoice_from.strip().split('\n')
+        p = Paragraph(' · '.join(c), style=self.stylesheet['Sender'])
+        p.wrapOn(canvas, self.invoice_to_width, 15.7 * mm)
+        p.drawOn(canvas, self.invoice_to_left, self.pagesize[1] - self.invoice_to_top + 2 * mm)
+        super()._draw_invoice_from(canvas)
+
+    def _draw_invoice_to_label(self, canvas):
+        pass
+
+    def _draw_invoice_from_label(self, canvas):
+        pass
+
+    def _draw_event_label(self, canvas):
+        pass
+
+    def _get_first_page_frames(self, doc):
+        footer_length = 3.5 * len(self.invoice.footer_text.split('\n')) * mm
+        return [
+            Frame(doc.leftMargin, doc.bottomMargin, doc.width, doc.height - 95 * mm,
+                  leftPadding=0, rightPadding=0, topPadding=0, bottomPadding=footer_length,
+                  id='normal')
+        ]
+
+    def _draw_metadata(self, canvas):
+        begin_top = 100 * mm
+
+        textobject = canvas.beginText(self.left_margin, self.pagesize[1] - begin_top)
+        textobject.setFont(self.font_regular, 8)
+        textobject.textLine(pgettext('invoice', 'Order code'))
+        textobject.moveCursor(0, 5)
+        textobject.setFont(self.font_regular, 10)
+        textobject.textLine(self.invoice.order.full_code)
+        canvas.drawText(textobject)
+
+        if self.invoice.is_cancellation:
+            textobject = canvas.beginText(self.left_margin + 50 * mm, self.pagesize[1] - begin_top)
+            textobject.setFont(self.font_regular, 8)
+            textobject.textLine(pgettext('invoice', 'Cancellation number'))
+            textobject.moveCursor(0, 5)
+            textobject.setFont(self.font_regular, 10)
+            textobject.textLine(self.invoice.number)
+            canvas.drawText(textobject)
+
+            textobject = canvas.beginText(self.left_margin + 100 * mm, self.pagesize[1] - begin_top)
+            textobject.setFont(self.font_regular, 8)
+            textobject.textLine(pgettext('invoice', 'Original invoice'))
+            textobject.moveCursor(0, 5)
+            textobject.setFont(self.font_regular, 10)
+            textobject.textLine(self.invoice.refers.number)
+            canvas.drawText(textobject)
+        else:
+            textobject = canvas.beginText(self.left_margin + 70 * mm, self.pagesize[1] - begin_top)
+            textobject.textLine(pgettext('invoice', 'Invoice number'))
+            textobject.moveCursor(0, 5)
+            textobject.setFont(self.font_regular, 10)
+            textobject.textLine(self.invoice.number)
+            canvas.drawText(textobject)
+
+        p = Paragraph(date_format(self.invoice.date, "DATE_FORMAT"), style=self.stylesheet['Normal'])
+        w = stringWidth(p.text, p.frags[0].fontName, p.frags[0].fontSize)
+        p.wrapOn(canvas, w, 15 * mm)
+        date_x = self.pagesize[0] - w - self.right_margin
+        p.drawOn(canvas, date_x, self.pagesize[1] - begin_top - 10 - 6)
+
+        textobject = canvas.beginText(date_x, self.pagesize[1] - begin_top)
+        textobject.setFont(self.font_regular, 8)
+        if self.invoice.is_cancellation:
+            textobject.textLine(pgettext('invoice', 'Cancellation date'))
+        else:
+            textobject.textLine(pgettext('invoice', 'Invoice date'))
+        canvas.drawText(textobject)
+
+
 @receiver(register_invoice_renderers, dispatch_uid="invoice_renderer_classic")
 def recv_classic(sender, **kwargs):
-    return ClassicInvoiceRenderer
+    return [ClassicInvoiceRenderer, Modern1Renderer]

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

@@ -0,0 +1,51 @@
+"""
+Django, for theoretically very valid reasons, creates migrations for *every single thing*
+we change on a model. Even the `help_text`! This makes sense, as we don't know if any
+database backend unknown to us might actually use this information for its database schema.
+
+However, pretix only supports PostgreSQL, MySQL, MariaDB and SQLite and we can be pretty
+certain that some changes to models will never require a change to the database. In this case,
+not creating a migration for certain changes will save us some performance while applying them
+*and* allow for a cleaner git history. Win-win!
+
+Only caveat is that we need to do some dirty monkeypatching to achieve it...
+"""
+from django.core.management.commands.makemigrations import Command as Parent
+from django.db import models
+from django.db.migrations.operations import models as modelops
+from django_countries.fields import CountryField
+
+modelops.AlterModelOptions.ALTER_OPTION_KEYS.remove("verbose_name")
+modelops.AlterModelOptions.ALTER_OPTION_KEYS.remove("verbose_name_plural")
+modelops.AlterModelOptions.ALTER_OPTION_KEYS.remove("ordering")
+modelops.AlterModelOptions.ALTER_OPTION_KEYS.remove("get_latest_by")
+modelops.AlterModelOptions.ALTER_OPTION_KEYS.remove("default_manager_name")
+modelops.AlterModelOptions.ALTER_OPTION_KEYS.remove("permissions")
+modelops.AlterModelOptions.ALTER_OPTION_KEYS.remove("default_permissions")
+IGNORED_ATTRS = [
+    # (field type, attribute name, blacklist of field sub-types)
+    (models.Field, 'verbose_name', []),
+    (models.Field, 'help_text', []),
+    (models.Field, 'validators', []),
+    (models.Field, 'editable', [models.DateField, models.DateTimeField, models.DateField, models.BinaryField]),
+    (models.Field, 'blank', [models.DateField, models.DateTimeField, models.AutoField, models.NullBooleanField,
+                             models.TimeField]),
+    (models.CharField, 'choices', [CountryField])
+]
+
+original_deconstruct = models.Field.deconstruct
+
+
+def new_deconstruct(self):
+    name, path, args, kwargs = original_deconstruct(self)
+    for ftype, attr, blacklist in IGNORED_ATTRS:
+        if isinstance(self, ftype) and not any(isinstance(self, ft) for ft in blacklist):
+            kwargs.pop(attr, None)
+    return name, path, args, kwargs
+
+
+models.Field.deconstruct = new_deconstruct
+
+
+class Command(Parent):
+    pass

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

@@ -0,0 +1,28 @@
+"""
+Django tries to be helpful by suggesting to run "makemigrations" in red font on every "migrate"
+run when there are things we have no migrations for. Usually, this is intended, and running
+"makemigrations" can really screw up the environment of a user, so we want to prevent novice
+users from doing that by going really dirty and fitlering it from the output.
+"""
+import sys
+
+from django.core.management.base import OutputWrapper
+from django.core.management.commands.migrate import Command as Parent
+
+
+class OutputFilter(OutputWrapper):
+    blacklist = (
+        "Your models have changes that are not yet reflected",
+        "Run 'manage.py makemigrations' to make new "
+    )
+
+    def write(self, msg, style_func=None, ending=None):
+        if any(b in msg for b in self.blacklist):
+            return
+        super().write(msg, style_func, ending)
+
+
+class Command(Parent):
+    def __init__(self, stdout=None, stderr=None, no_color=False, force_color=False):
+        super().__init__(stdout, stderr, no_color, force_color)
+        self.stdout = OutputFilter(stdout or sys.stdout)

src/pretix/base/middleware.py

@@ -97,7 +97,7 @@ def get_language_from_event(request: HttpRequest) -> str:
 
 
 def get_language_from_browser(request: HttpRequest) -> str:
-    accept = request.META.get('HTTP_ACCEPT_LANGUAGE', '')
+    accept = request.headers.get('Accept-Language', '')
     for accept_lang, unused in parse_accept_lang_header(accept):
         if accept_lang == '*':
             break

src/pretix/base/migrations/0117_auto_20190418_1149.py

@@ -0,0 +1,23 @@
+# Generated by Django 2.2 on 2019-04-18 11:49
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('pretixbase', '0116_auto_20190402_0722'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='itemvariation',
+            name='original_price',
+            field=models.DecimalField(blank=True, decimal_places=2, help_text='If set, this will be displayed next to '
+                                                                              'the current price to show that the '
+                                                                              'current price is a discounted one. '
+                                                                              'This is just a cosmetic setting and '
+                                                                              'will not actually impact pricing.',
+                                      max_digits=7, null=True, verbose_name='Original price'),
+        ),
+    ]

src/pretix/base/migrations/0118_auto_20190423_0839.py

@@ -0,0 +1,22 @@
+# Generated by Django 2.2 on 2019-04-23 08:39
+
+import django.db.models.deletion
+import jsonfallback.fields
+from django.db import migrations, models
+
+import pretix.base.models.fields
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('pretixbase', '0117_auto_20190418_1149'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='subevent',
+            name='is_public',
+            field=models.BooleanField(default=True, help_text='If selected, this event will show up publicly on the list of dates for your event.', verbose_name='Show in lists'),
+        ),
+    ]

src/pretix/base/migrations/0119_auto_20190509_0654.py

@@ -0,0 +1,22 @@
+# Generated by Django 2.2 on 2019-05-09 06:54
+
+import django.db.models.deletion
+import jsonfallback.fields
+from django.db import migrations, models
+
+import pretix.base.models.fields
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('pretixbase', '0118_auto_20190423_0839'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='question',
+            name='hidden',
+            field=models.BooleanField(default=False, help_text='This question will only show up in the backend.', verbose_name='Hidden question'),
+        ),
+    ]

src/pretix/base/migrations/0120_auto_20190509_0736.py

@@ -0,0 +1,77 @@
+# Generated by Django 2.2 on 2019-05-09 07:36
+
+import django.db.models.deletion
+import jsonfallback.fields
+from django.db import migrations, models
+
+import pretix.base.models.fields
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('pretixbase', '0119_auto_20190509_0654'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='cartposition',
+            name='attendee_name_parts',
+            field=jsonfallback.fields.FallbackJSONField(default=dict),
+        ),
+        migrations.AlterField(
+            model_name='cartposition',
+            name='subevent',
+            field=models.ForeignKey(null=True, on_delete=django.db.models.deletion.PROTECT, to='pretixbase.SubEvent'),
+        ),
+        migrations.AlterField(
+            model_name='cartposition',
+            name='voucher',
+            field=models.ForeignKey(null=True, on_delete=django.db.models.deletion.PROTECT, to='pretixbase.Voucher'),
+        ),
+        migrations.AlterField(
+            model_name='event',
+            name='is_public',
+            field=models.BooleanField(default=True),
+        ),
+        migrations.AlterField(
+            model_name='invoiceaddress',
+            name='name_parts',
+            field=jsonfallback.fields.FallbackJSONField(default=dict),
+        ),
+        migrations.AlterField(
+            model_name='item',
+            name='sales_channels',
+            field=pretix.base.models.fields.MultiStringField(default=['web']),
+        ),
+        migrations.AlterField(
+            model_name='order',
+            name='sales_channel',
+            field=models.CharField(default='web', max_length=190),
+        ),
+        migrations.AlterField(
+            model_name='orderposition',
+            name='attendee_name_parts',
+            field=jsonfallback.fields.FallbackJSONField(default=dict),
+        ),
+        migrations.AlterField(
+            model_name='orderposition',
+            name='subevent',
+            field=models.ForeignKey(null=True, on_delete=django.db.models.deletion.PROTECT, to='pretixbase.SubEvent'),
+        ),
+        migrations.AlterField(
+            model_name='orderposition',
+            name='voucher',
+            field=models.ForeignKey(null=True, on_delete=django.db.models.deletion.PROTECT, to='pretixbase.Voucher'),
+        ),
+        migrations.AlterField(
+            model_name='staffsessionauditlog',
+            name='method',
+            field=models.CharField(max_length=255),
+        ),
+        migrations.AlterField(
+            model_name='user',
+            name='email',
+            field=models.EmailField(db_index=True, max_length=190, null=True, unique=True),
+        ),
+    ]

src/pretix/base/models/auth.py

@@ -111,6 +111,7 @@ class User(AbstractBaseUser, PermissionsMixin, LoggingMixin):
     class Meta:
         verbose_name = _("User")
         verbose_name_plural = _("Users")
+        ordering = ('email',)
 
     def save(self, *args, **kwargs):
         self.email = self.email.lower()

src/pretix/base/models/event.py

@@ -164,7 +164,7 @@ class EventMixin:
     def annotated(cls, qs, channel='web'):
         from pretix.base.models import Item, ItemVariation, Quota
 
-        sq_active_item = Item.objects.filter_available(channel=channel).filter(
+        sq_active_item = Item.objects.using(settings.DATABASE_REPLICA).filter_available(channel=channel).filter(
             Q(variations__isnull=True)
             & Q(quotas__pk=OuterRef('pk'))
         ).order_by().values_list('quotas__pk').annotate(
@@ -186,7 +186,7 @@ class EventMixin:
             Prefetch(
                 'quotas',
                 to_attr='active_quotas',
-                queryset=Quota.objects.annotate(
+                queryset=Quota.objects.using(settings.DATABASE_REPLICA).annotate(
                     active_items=Subquery(sq_active_item, output_field=models.TextField()),
                     active_variations=Subquery(sq_active_variation, output_field=models.TextField()),
                 ).exclude(
@@ -639,22 +639,6 @@ class Event(EventMixin, LoggedModel):
         irs = self.get_invoice_renderers()
         return irs[self.settings.invoice_renderer]
 
-    @property
-    def active_subevents(self):
-        """
-        Returns a queryset of active subevents.
-        """
-        return self.subevents.filter(active=True).order_by('-date_from', 'name')
-
-    @property
-    def active_future_subevents(self):
-        return self.subevents.filter(
-            Q(active=True) & (
-                Q(Q(date_to__isnull=True) & Q(date_from__gte=now()))
-                | Q(date_to__gte=now())
-            )
-        ).order_by('date_from', 'name')
-
     def subevents_annotated(self, channel):
         return SubEvent.annotated(self.subevents, channel)
 
@@ -667,7 +651,7 @@ class Event(EventMixin, LoggedModel):
             'name_descending': ('-name', 'date_from'),
         }[ordering]
         subevs = queryset.filter(
-            Q(active=True) & (
+            Q(active=True) & Q(is_public=True) & (
                 Q(Q(date_to__isnull=True) & Q(date_from__gte=now() - timedelta(hours=24)))
                 | Q(date_to__gte=now() - timedelta(hours=24))
             )
@@ -833,6 +817,8 @@ class SubEvent(EventMixin, LoggedModel):
     :type event: Event
     :param active: Whether to show the subevent
     :type active: bool
+    :param is_public: Whether to show the subevent in lists
+    :type is_public: bool
     :param name: This event's full title
     :type name: str
     :param date_from: The datetime this event starts
@@ -851,6 +837,10 @@ class SubEvent(EventMixin, LoggedModel):
     active = models.BooleanField(default=False, verbose_name=_("Active"),
                                  help_text=_("Only with this checkbox enabled, this date is visible in the "
                                              "frontend to users."))
+    is_public = models.BooleanField(default=True,
+                                    verbose_name=_("Show in lists"),
+                                    help_text=_("If selected, this event will show up publicly on the list of dates "
+                                                "for your event."))
     name = I18nCharField(
         max_length=200,
         verbose_name=_("Name"),

src/pretix/base/models/fields.py

@@ -37,7 +37,7 @@ class MultiStringField(TextField):
     def get_prep_lookup(self, lookup_type, value):  # NOQA
         raise TypeError('Lookups on multi strings are currently not supported.')
 
-    def from_db_value(self, value, expression, connection, context):
+    def from_db_value(self, value, expression, connection):
         if value:
             return [v for v in value.split(DELIMITER) if v]
         else:

src/pretix/base/models/invoices.py

@@ -117,12 +117,35 @@ class Invoice(models.Model):
             self.invoice_from_name,
             self.invoice_from,
             (self.invoice_from_zipcode or "") + " " + (self.invoice_from_city or ""),
-            str(self.invoice_from_country),
+            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 "",
         ]
         return '\n'.join([p.strip() for p in parts if p and p.strip()])
 
+    @property
+    def address_invoice_from(self):
+        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 "",
+        ]
+        return '\n'.join([p.strip() for p in parts if p and p.strip()])
+
+    @property
+    def address_invoice_to(self):
+        if self.invoice_to and not self.invoice_to_company and not self.invoice_to_name:
+            return self.invoice_to
+        parts = [
+            self.invoice_to_company,
+            self.invoice_to_name,
+            self.invoice_to_street,
+            (self.invoice_to_zipcode or "") + " " + (self.invoice_to_city or ""),
+            self.invoice_to_country.name if self.invoice_to_country else "",
+        ]
+        return '\n'.join([p.strip() for p in parts if p and p.strip()])
+
     def _get_numeric_invoice_number(self):
         numeric_invoices = Invoice.objects.filter(
             event__organizer=self.event.organizer,

src/pretix/base/models/items.py

@@ -16,6 +16,7 @@ from django.utils.crypto import get_random_string
 from django.utils.functional import cached_property
 from django.utils.timezone import is_naive, make_aware, now
 from django.utils.translation import pgettext_lazy, ugettext_lazy as _
+from django_countries.fields import Country
 from i18nfield.fields import I18nCharField, I18nTextField
 
 from pretix.base.models import fields
@@ -332,7 +333,9 @@ class Item(LoggedModel):
     require_bundling = models.BooleanField(
         verbose_name=_('Only sell this product as part of a bundle'),
         default=False,
-        help_text=_('If this option is set, the product will only be sold as part of bundle products.')
+        help_text=_('If this option is set, the product will only be sold as part of bundle products. Do '
+                    '<strong>not</strong> check this option if you want to use this product as an add-on product, '
+                    'but only for fixed bundles!')
     )
     allow_cancel = models.BooleanField(
         verbose_name=_('Allow product to be canceled'),
@@ -550,6 +553,8 @@ class ItemVariation(models.Model):
     :type active: bool
     :param default_price: This variation's default price
     :type default_price: decimal.Decimal
+    :param original_price: The item's "original" price. Will not be used for any calculations, will just be shown.
+    :type original_price: decimal.Decimal
     """
     item = models.ForeignKey(
         Item,
@@ -578,6 +583,13 @@ class ItemVariation(models.Model):
         null=True, blank=True,
         verbose_name=_("Default price"),
     )
+    original_price = models.DecimalField(
+        verbose_name=_('Original price'),
+        blank=True, null=True,
+        max_digits=7, decimal_places=2,
+        help_text=_('If set, this will be displayed next to the current price to show that the current price is a '
+                    'discounted one. This is just a cosmetic setting and will not actually impact pricing.')
+    )
 
     class Meta:
         verbose_name = _("Product variation")
@@ -884,6 +896,8 @@ class Question(LoggedModel):
     :param items: A set of ``Items`` objects that this question should be applied to
     :param ask_during_checkin: Whether to ask this question during check-in instead of during check-out.
     :type ask_during_checkin: bool
+    :param hidden: Whether to only show the question in the backend
+    :type hidden: bool
     :param identifier: An arbitrary, internal identifier
     :type identifier: str
     :param dependency_question: This question will only show up if the referenced question is set to `dependency_value`.
@@ -901,6 +915,7 @@ class Question(LoggedModel):
     TYPE_DATE = "D"
     TYPE_TIME = "H"
     TYPE_DATETIME = "W"
+    TYPE_COUNTRYCODE = "CC"
     TYPE_CHOICES = (
         (TYPE_NUMBER, _("Number")),
         (TYPE_STRING, _("Text (one line)")),
@@ -912,6 +927,7 @@ class Question(LoggedModel):
         (TYPE_DATE, _("Date")),
         (TYPE_TIME, _("Time")),
         (TYPE_DATETIME, _("Date and time")),
+        (TYPE_COUNTRYCODE, _("Country code (ISO 3166-1 alpha-2)")),
     )
 
     event = models.ForeignKey(
@@ -959,6 +975,11 @@ class Question(LoggedModel):
                     'pretixdesk 0.2 or newer.'),
         default=False
     )
+    hidden = models.BooleanField(
+        verbose_name=_('Hidden question'),
+        help_text=_('This question will only show up in the backend.'),
+        default=False
+    )
     dependency_question = models.ForeignKey(
         'Question', null=True, blank=True, on_delete=models.SET_NULL, related_name='dependent_questions'
     )
@@ -1062,6 +1083,12 @@ class Question(LoggedModel):
                 return dt
             except:
                 raise ValidationError(_('Invalid datetime input.'))
+        elif self.type == Question.TYPE_COUNTRYCODE and answer:
+            c = Country(answer.upper())
+            if c.name:
+                return answer
+            else:
+                raise ValidationError(_('Unknown country code.'))
 
         return answer
 
@@ -1281,7 +1308,8 @@ class Quota(LoggedModel):
                     'cached_availability_state', 'cached_availability_number', 'cached_availability_time',
                     'cached_availability_paid_orders'
                 ],
-                clear_cache=False
+                clear_cache=False,
+                using='default'
             )
 
         if _cache is not None:
@@ -1391,7 +1419,7 @@ class Quota(LoggedModel):
 
     @staticmethod
     def clean_variations(items, variations):
-        for variation in variations:
+        for variation in (variations or []):
             if variation.item not in items:
                 raise ValidationError(_('All variations must belong to an item contained in the items list.'))
                 break

src/pretix/base/models/orders.py

@@ -24,7 +24,7 @@ from django.utils.formats import date_format
 from django.utils.functional import cached_property
 from django.utils.timezone import make_aware, now
 from django.utils.translation import pgettext_lazy, ugettext_lazy as _
-from django_countries.fields import CountryField
+from django_countries.fields import Country, CountryField
 from i18nfield.strings import LazyI18nString
 from jsonfallback.fields import FallbackJSONField
 
@@ -32,6 +32,7 @@ from pretix.base.decimal import round_decimal
 from pretix.base.i18n import language
 from pretix.base.models import User
 from pretix.base.reldate import RelativeDateWrapper
+from pretix.base.services.locking import NoLockManager
 from pretix.base.settings import PERSON_NAME_SCHEMES
 
 from .base import LockModel, LoggedModel
@@ -606,7 +607,7 @@ class Order(LockModel, LoggedModel):
             ), tz)
         return term_last
 
-    def _can_be_paid(self, count_waitinglist=True) -> Union[bool, str]:
+    def _can_be_paid(self, count_waitinglist=True, ignore_date=False) -> Union[bool, str]:
         error_messages = {
             'late_lastdate': _("The payment can not be accepted as the last date of payments configured in the "
                                "payment settings is over."),
@@ -617,13 +618,13 @@ class Order(LockModel, LoggedModel):
         if self.require_approval:
             return error_messages['require_approval']
         term_last = self.payment_term_last
-        if term_last:
+        if term_last and not ignore_date:
             if now() > term_last:
                 return error_messages['late_lastdate']
 
         if self.status == self.STATUS_PENDING:
             return True
-        if not self.event.settings.get('payment_term_accept_late'):
+        if not self.event.settings.get('payment_term_accept_late') and not ignore_date:
             return error_messages['late']
 
         return self._is_still_available(count_waitinglist=count_waitinglist)
@@ -859,6 +860,8 @@ class QuestionAnswer(models.Model):
                 return date_format(d, "TIME_FORMAT")
             except ValueError:
                 return self.answer
+        elif self.question.type == Question.TYPE_COUNTRYCODE and self.answer:
+            return Country(self.answer).name or self.answer
         else:
             return self.answer
 
@@ -975,7 +978,8 @@ class AbstractPosition(models.Model):
             if hasattr(self.item, 'questions_to_ask'):
                 questions = list(copy.copy(q) for q in self.item.questions_to_ask)
             else:
-                questions = list(copy.copy(q) for q in self.item.questions.filter(ask_during_checkin=False))
+                questions = list(copy.copy(q) for q in self.item.questions.filter(ask_during_checkin=False,
+                                                                                  hidden=False))
         else:
             questions = list(copy.copy(q) for q in self.item.questions.all())
 
@@ -1137,9 +1141,9 @@ class OrderPayment(models.Model):
         """
         return self.order.event.get_payment_providers().get(self.provider)
 
-    def _mark_paid(self, force, count_waitinglist, user, auth, overpaid=False):
+    def _mark_paid(self, force, count_waitinglist, user, auth, ignore_date=False, overpaid=False):
         from pretix.base.signals import order_paid
-        can_be_paid = self.order._can_be_paid(count_waitinglist=count_waitinglist)
+        can_be_paid = self.order._can_be_paid(count_waitinglist=count_waitinglist, ignore_date=ignore_date)
         if not force and can_be_paid is not True:
             self.order.log_action('pretix.event.order.quotaexceeded', {
                 'message': can_be_paid
@@ -1159,7 +1163,7 @@ 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 confirm(self, count_waitinglist=True, send_mail=True, force=False, user=None, auth=None, mail_text=''):
+    def confirm(self, count_waitinglist=True, send_mail=True, force=False, user=None, auth=None, mail_text='', ignore_date=False, lock=True):
         """
         Marks the payment as complete. If possible, this also marks the order as paid if no further
         payment is required
@@ -1169,6 +1173,7 @@ class OrderPayment(models.Model):
         :type count_waitinglist: boolean
         :param force: Whether this payment should be marked as paid even if no remaining
                       quota is available (default: ``False``).
+        :param ignore_date: Whether this order should be marked as paid even when the last date of payments is over.
         :type force: boolean
         :param send_mail: Whether an email should be sent to the user about this event (default: ``True``).
         :type send_mail: boolean
@@ -1218,14 +1223,16 @@ class OrderPayment(models.Model):
         if payment_sum - refund_sum < self.order.total:
             return
 
-        if self.order.status == Order.STATUS_PENDING and self.order.expires > now() + timedelta(hours=12):
+        if (self.order.status == Order.STATUS_PENDING and self.order.expires > now() + timedelta(hours=12)) or not lock:
             # Performance optimization. In this case, there's really no reason to lock everything and an atomic
             # database transaction is more than enough.
-            with transaction.atomic():
-                self._mark_paid(force, count_waitinglist, user, auth, overpaid=payment_sum - refund_sum > self.order.total)
+            lockfn = NoLockManager
         else:
-            with self.order.event.lock():
-                self._mark_paid(force, count_waitinglist, user, auth, overpaid=payment_sum - refund_sum > self.order.total)
+            lockfn = self.order.event.lock
+
+        with lockfn():
+            self._mark_paid(force, count_waitinglist, user, auth, overpaid=payment_sum - refund_sum > self.order.total,
+                            ignore_date=ignore_date)
 
         invoice = None
         if invoice_qualified(self.order):

src/pretix/base/models/tax.py

@@ -118,6 +118,9 @@ class TaxRule(LoggedModel):
     )
     custom_rules = models.TextField(blank=True, null=True)
 
+    class Meta:
+        ordering = ('event', 'rate', 'id')
+
     def allow_delete(self):
         from pretix.base.models.orders import OrderFee, OrderPosition
 

src/pretix/base/models/vouchers.py

@@ -344,6 +344,8 @@ class Voucher(LoggedModel):
         a variation).
         """
         if self.quota_id:
+            if variation:
+                return variation.quotas.filter(pk=self.quota_id).exists()
             return item.quotas.filter(pk=self.quota_id).exists()
         if self.item_id and not self.variation_id:
             return self.item_id == item.pk

src/pretix/base/pdf.py

@@ -87,6 +87,15 @@ DEFAULT_VARIABLES = OrderedDict((
         "editor_sample": _("123.45 EUR"),
         "evaluate": lambda op, order, event: money_filter(op.price, event.currency)
     }),
+    ("price_with_addons", {
+        "label": _("Price including add-ons"),
+        "editor_sample": _("123.45 EUR"),
+        "evaluate": lambda op, order, event: money_filter(op.price + sum(
+            p.price
+            for p in op.addons.all()
+            if not p.canceled
+        ), event.currency)
+    }),
     ("attendee_name", {
         "label": _("Attendee name"),
         "editor_sample": _("John Doe"),

src/pretix/base/plugins.py

@@ -1,8 +1,10 @@
+import sys
 from enum import Enum
 from typing import List
 
-from django.apps import apps
+from django.apps import AppConfig, apps
 from django.conf import settings
+from django.core.exceptions import ImproperlyConfigured
 
 
 class PluginType(Enum):
@@ -39,3 +41,22 @@ def get_all_plugins(event=None) -> List[type]:
         plugins,
         key=lambda m: (0 if m.module.startswith('pretix.') else 1, str(m.name).lower().replace('pretix ', ''))
     )
+
+
+class PluginConfig(AppConfig):
+
+    def __init__(self, *args, **kwargs):
+        super().__init__(*args, **kwargs)
+        if not hasattr(self, 'PretixPluginMeta'):
+            raise ImproperlyConfigured("A pretix plugin config should have a PretixPluginMeta inner class.")
+
+        if hasattr(self.PretixPluginMeta, 'compatibility'):
+            import pkg_resources
+            try:
+                pkg_resources.require(self.PretixPluginMeta.compatibility)
+            except pkg_resources.VersionConflict as e:
+                print("Incompatible plugins found!")
+                print("Plugin {} requires you to have {}, but you installed {}.".format(
+                    self.name, e.req, e.dist
+                ))
+                sys.exit(1)

src/pretix/base/services/cart.py

@@ -1,14 +1,14 @@
 from collections import Counter, defaultdict, namedtuple
-from datetime import timedelta
+from datetime import datetime, time, timedelta
 from decimal import Decimal
 from typing import List, Optional
 
 from celery.exceptions import MaxRetriesExceededError
 from django.core.exceptions import ValidationError
-from django.db import transaction
+from django.db import DatabaseError, transaction
 from django.db.models import Q
 from django.dispatch import receiver
-from django.utils.timezone import now
+from django.utils.timezone import make_aware, now
 from django.utils.translation import pgettext_lazy, ugettext as _
 
 from pretix.base.i18n import language
@@ -19,8 +19,9 @@ from pretix.base.models import (
 from pretix.base.models.event import SubEvent
 from pretix.base.models.orders import OrderFee
 from pretix.base.models.tax import TAXED_ZERO, TaxedPrice, TaxRule
+from pretix.base.reldate import RelativeDateWrapper
 from pretix.base.services.checkin import _save_answers
-from pretix.base.services.locking import LockTimeoutException
+from pretix.base.services.locking import LockTimeoutException, NoLockManager
 from pretix.base.services.pricing import get_price
 from pretix.base.services.tasks import ProfiledTask
 from pretix.base.settings import PERSON_NAME_SCHEMES
@@ -134,6 +135,15 @@ class CartManager:
             raise CartError(error_messages['not_started'])
         if self.event.presale_has_ended:
             raise CartError(error_messages['ended'])
+        if not self.event.has_subevents:
+            tlv = self.event.settings.get('payment_term_last', as_type=RelativeDateWrapper)
+            if tlv:
+                term_last = make_aware(datetime.combine(
+                    tlv.datetime(self.event).date(),
+                    time(hour=23, minute=59, second=59)
+                ), self.event.timezone)
+                if term_last < self.now_dt:
+                    raise CartError(error_messages['ended'])
 
     def _extend_expiry_of_valid_existing_positions(self):
         # Extend this user's cart session to ensure all items in the cart expire at the same time
@@ -152,6 +162,18 @@ class CartManager:
                 err = error_messages['some_subevent_ended']
                 cp.addons.all().delete()
                 cp.delete()
+
+            if cp.subevent:
+                tlv = self.event.settings.get('payment_term_last', as_type=RelativeDateWrapper)
+                if tlv:
+                    term_last = make_aware(datetime.combine(
+                        tlv.datetime(cp.subevent).date(),
+                        time(hour=23, minute=59, second=59)
+                    ), self.event.timezone)
+                    if term_last < self.now_dt:
+                        err = error_messages['some_subevent_ended']
+                        cp.addons.all().delete()
+                        cp.delete()
         return err
 
     def _update_subevents_cache(self, se_ids: List[int]):
@@ -216,6 +238,16 @@ class CartManager:
             if op.subevent and op.subevent.presale_has_ended:
                 raise CartError(error_messages['ended'])
 
+            if op.subevent:
+                tlv = self.event.settings.get('payment_term_last', as_type=RelativeDateWrapper)
+                if tlv:
+                    term_last = make_aware(datetime.combine(
+                        tlv.datetime(op.subevent).date(),
+                        time(hour=23, minute=59, second=59)
+                    ), self.event.timezone)
+                    if term_last < self.now_dt:
+                        raise CartError(error_messages['ended'])
+
         if isinstance(op, self.AddOperation):
             if op.item.category and op.item.category.is_addon and not (op.addon_to and op.addon_to != 'FAKE'):
                 raise CartError(error_messages['addon_only'])
@@ -759,7 +791,11 @@ class CartManager:
                     if available_count == 1:
                         op.position.expires = self._expiry
                         op.position.price = op.price.gross
-                        op.position.save()
+                        try:
+                            op.position.save(force_update=True)
+                        except DatabaseError:
+                            # Best effort... The position might have been deleted in the meantime!
+                            pass
                     elif available_count == 0:
                         op.position.addons.all().delete()
                         op.position.delete()
@@ -774,17 +810,33 @@ class CartManager:
         CartPosition.objects.bulk_create([p for p in new_cart_positions if not getattr(p, '_answers', None) and not p.pk])
         return err
 
+    def _require_locking(self):
+        if self._voucher_use_diff:
+            # If any vouchers are used, we lock to make sure we don't redeem them to often
+            return True
+
+        if self._quota_diff and any(q.size is not None for q in self._quota_diff):
+            # If any quotas are affected that are not unlimited, we lock
+            return True
+
+        return False
+
     def commit(self):
         self._check_presale_dates()
         self._check_max_cart_size()
         self._calculate_expiry()
 
-        with self.event.lock() as now_dt:
+        err = self._delete_out_of_timeframe()
+        err = self.extend_expired_positions() or err
+
+        lockfn = NoLockManager
+        if self._require_locking():
+            lockfn = self.event.lock
+
+        with lockfn() as now_dt:
             with transaction.atomic():
                 self.now_dt = now_dt
                 self._extend_expiry_of_valid_existing_positions()
-                err = self._delete_out_of_timeframe()
-                err = self.extend_expired_positions() or err
                 err = self._perform_operations() or err
             if err:
                 raise CartError(err)

src/pretix/base/services/invoices.py

@@ -120,7 +120,7 @@ def build_invoice(invoice: Invoice) -> Invoice:
         positions = list(
             invoice.order.positions.select_related('addon_to', 'item', 'tax_rule', 'subevent', 'variation').annotate(
                 addon_c=Count('addons')
-            )
+            ).order_by('positionid', 'id')
         )
 
         reverse_charge = False

src/pretix/base/services/locking.py

@@ -13,6 +13,18 @@ logger = logging.getLogger('pretix.base.locking')
 LOCK_TIMEOUT = 120
 
 
+class NoLockManager:
+    def __init__(self):
+        pass
+
+    def __enter__(self):
+        return now()
+
+    def __exit__(self, exc_type, exc_val, exc_tb):
+        if exc_type is not None:
+            return False
+
+
 class LockManager:
     def __init__(self, event):
         self.event = event

src/pretix/base/services/mail.py

@@ -15,6 +15,7 @@ from pretix.base.email import ClassicMailRenderer
 from pretix.base.i18n import language
 from pretix.base.models import Event, Invoice, InvoiceAddress, Order
 from pretix.base.services.invoices import invoice_pdf_task
+from pretix.base.services.tasks import TransactionAwareTask
 from pretix.base.services.tickets import get_tickets_for_order
 from pretix.base.signals import email_filter
 from pretix.celery_app import app
@@ -177,7 +178,7 @@ def mail(email: str, subject: str, template: Union[str, LazyI18nString],
         chain(*task_chain).apply_async()
 
 
-@app.task(bind=True)
+@app.task(base=TransactionAwareTask, bind=True)
 def mail_send_task(self, *args, to: List[str], subject: str, body: str, html: str, sender: str,
                    event: int=None, headers: dict=None, bcc: List[str]=None, invoices: List[int]=None,
                    order: int=None, attach_tickets=False) -> bool:
@@ -219,14 +220,23 @@ def mail_send_task(self, *args, to: List[str], subject: str, body: str, html: st
                         args.append((name, content, ct.type))
                         attach_size += len(content)
 
-                    if attach_tickets < 4 * 1024 * 1024:
+                    if attach_size < 4 * 1024 * 1024:
                         # Do not attach more than 4MB, it will bounce way to often.
-
                         for a in args:
                             try:
                                 email.attach(*a)
                             except:
                                 pass
+                    else:
+                        order.log_action(
+                            'pretix.event.order.email.attachments.skipped',
+                            data={
+                                'subject': 'Attachments skipped',
+                                'message': 'Attachment have not been send because {} bytes are likely too large to arrive.'.format(attach_size),
+                                'recipient': '',
+                                'invoices': [],
+                            }
+                        )
 
         email = email_filter.send_chained(event, 'message', message=email, order=order)
 

src/pretix/base/services/orders.py

@@ -1,7 +1,7 @@
 import json
 import logging
 from collections import Counter, namedtuple
-from datetime import datetime, timedelta
+from datetime import datetime, time, timedelta
 from decimal import Decimal
 from typing import List, Optional
 
@@ -14,7 +14,7 @@ from django.db.models.functions import Greatest
 from django.dispatch import receiver
 from django.utils.formats import date_format
 from django.utils.functional import cached_property
-from django.utils.timezone import now
+from django.utils.timezone import make_aware, now
 from django.utils.translation import ugettext as _
 
 from pretix.api.models import OAuthApplication
@@ -28,16 +28,18 @@ from pretix.base.models import (
 from pretix.base.models.event import SubEvent
 from pretix.base.models.items import ItemBundle
 from pretix.base.models.orders import (
-    CachedCombinedTicket, CachedTicket, InvoiceAddress, OrderFee, OrderRefund,
-    generate_position_secret, generate_secret,
+    InvoiceAddress, OrderFee, OrderRefund, generate_position_secret,
+    generate_secret,
 )
 from pretix.base.models.organizer import TeamAPIToken
 from pretix.base.models.tax import TaxedPrice
 from pretix.base.payment import BasePaymentProvider, PaymentException
+from pretix.base.reldate import RelativeDateWrapper
+from pretix.base.services import tickets
 from pretix.base.services.invoices import (
     generate_cancellation, generate_invoice, invoice_qualified,
 )
-from pretix.base.services.locking import LockTimeoutException
+from pretix.base.services.locking import LockTimeoutException, NoLockManager
 from pretix.base.services.mail import SendMailException
 from pretix.base.services.pricing import get_price
 from pretix.base.services.tasks import ProfiledTask
@@ -160,7 +162,7 @@ def mark_order_expired(order, user=None, auth=None):
     return order
 
 
-def approve_order(order, user=None, send_mail: bool=True, auth=None):
+def approve_order(order, user=None, send_mail: bool=True, auth=None, force=False):
     """
     Mark this order as approved
     :param order: The order to change
@@ -183,7 +185,7 @@ def approve_order(order, user=None, send_mail: bool=True, auth=None):
                 fee=None
             )
             try:
-                p.confirm(send_mail=False, count_waitinglist=False, user=user, auth=auth)
+                p.confirm(send_mail=False, count_waitinglist=False, user=user, auth=auth, ignore_date=True, force=force)
             except Quota.QuotaExceededException:
                 raise OrderError(error_messages['unavailable'])
 
@@ -402,6 +404,16 @@ def _check_date(event: Event, now_dt: datetime):
     if event.presale_has_ended:
         raise OrderError(error_messages['ended'])
 
+    if not event.has_subevents:
+        tlv = event.settings.get('payment_term_last', as_type=RelativeDateWrapper)
+        if tlv:
+            term_last = make_aware(datetime.combine(
+                tlv.datetime(event).date(),
+                time(hour=23, minute=59, second=59)
+            ), event.timezone)
+            if term_last < now_dt:
+                raise OrderError(error_messages['ended'])
+
 
 def _check_positions(event: Event, now_dt: datetime, positions: List[CartPosition], address: InvoiceAddress=None):
     err = None
@@ -456,6 +468,18 @@ def _check_positions(event: Event, now_dt: datetime, positions: List[CartPositio
             delete(cp)
             break
 
+        if cp.subevent:
+            tlv = event.settings.get('payment_term_last', as_type=RelativeDateWrapper)
+            if tlv:
+                term_last = make_aware(datetime.combine(
+                    tlv.datetime(cp.subevent).date(),
+                    time(hour=23, minute=59, second=59)
+                ), event.timezone)
+                if term_last < now_dt:
+                    err = err or error_messages['some_subevent_ended']
+                    delete(cp)
+                    break
+
         if cp.subevent and cp.subevent.presale_has_ended:
             err = err or error_messages['some_subevent_ended']
             delete(cp)
@@ -567,6 +591,7 @@ def _create_order(event: Event, email: str, positions: List[CartPosition], now_d
                   meta_info: dict=None, sales_channel: str='web'):
     fees, pf = _get_fees(positions, payment_provider, address, meta_info, event)
     total = sum([c.price for c in positions]) + sum([c.value for c in fees])
+    p = None
 
     with transaction.atomic():
         order = Order(
@@ -600,7 +625,7 @@ def _create_order(event: Event, email: str, positions: List[CartPosition], now_d
             fee.save()
 
         if payment_provider and not order.require_approval:
-            order.payments.create(
+            p = order.payments.create(
                 state=OrderPayment.PAYMENT_STATE_CREATED,
                 provider=payment_provider.identifier,
                 amount=total,
@@ -616,7 +641,7 @@ def _create_order(event: Event, email: str, positions: List[CartPosition], now_d
                 order.log_action('pretix.event.order.consent', data={'msg': msg})
 
     order_placed.send(event, order=order)
-    return order
+    return order, p
 
 
 def _perform_order(event: str, payment_provider: str, position_ids: List[str],
@@ -640,16 +665,32 @@ def _perform_order(event: str, payment_provider: str, position_ids: List[str],
         except InvoiceAddress.DoesNotExist:
             pass
 
-    with event.lock() as now_dt:
-        positions = list(CartPosition.objects.filter(
-            id__in=position_ids).select_related('item', 'variation', 'subevent', 'addon_to').prefetch_related('addons'))
+    positions = CartPosition.objects.filter(id__in=position_ids, event=event)
+
+    lockfn = NoLockManager
+    locked = False
+    if positions.filter(Q(voucher__isnull=False) | Q(expires__lt=now() + timedelta(minutes=2))).exists():
+        # Performance optimization: If no voucher is used and no cart position is dangerously close to its expiry date,
+        # creating this order shouldn't be prone to any race conditions and we don't need to lock the event.
+        locked = True
+        lockfn = event.lock
+
+    with lockfn() as now_dt:
+        positions = list(positions.select_related('item', 'variation', 'subevent', 'addon_to').prefetch_related('addons'))
         if len(positions) == 0:
             raise OrderError(error_messages['empty'])
         if len(position_ids) != len(positions):
             raise OrderError(error_messages['internal'])
         _check_positions(event, now_dt, positions, address=addr)
-        order = _create_order(event, email, positions, now_dt, pprov,
-                              locale=locale, address=addr, meta_info=meta_info, sales_channel=sales_channel)
+        order, payment = _create_order(event, email, positions, now_dt, pprov,
+                                       locale=locale, address=addr, meta_info=meta_info, sales_channel=sales_channel)
+
+        free_order_flow = payment and payment_provider == 'free' and order.total == Decimal('0.00') and not order.require_approval
+        if free_order_flow:
+            try:
+                payment.confirm(send_mail=False, lock=not locked)
+            except Quota.QuotaExceededException:
+                pass
 
     invoice = order.invoices.last()  # Might be generated by plugin already
     if event.settings.get('invoice_generate') == 'True' and invoice_qualified(order):
@@ -664,7 +705,7 @@ def _perform_order(event: str, payment_provider: str, position_ids: List[str],
         if order.require_approval:
             email_template = event.settings.mail_text_order_placed_require_approval
             log_entry = 'pretix.event.order.email.order_placed_require_approval'
-        elif payment_provider == 'free':
+        elif free_order_flow:
             email_template = event.settings.mail_text_order_free
             log_entry = 'pretix.event.order.email.order_free'
         else:
@@ -840,8 +881,8 @@ class OrderChangeManager:
         'addon_invalid': _('The selected base position does not allow you to add this product as an add-on.'),
         'subevent_required': _('You need to choose a subevent for the new position.'),
     }
-    ItemOperation = namedtuple('ItemOperation', ('position', 'item', 'variation', 'price'))
-    SubeventOperation = namedtuple('SubeventOperation', ('position', 'subevent', 'price'))
+    ItemOperation = namedtuple('ItemOperation', ('position', 'item', 'variation'))
+    SubeventOperation = namedtuple('SubeventOperation', ('position', 'subevent'))
     PriceOperation = namedtuple('PriceOperation', ('position', 'price'))
     CancelOperation = namedtuple('CancelOperation', ('position',))
     AddOperation = namedtuple('AddOperation', ('item', 'variation', 'price', 'addon_to', 'subevent'))
@@ -852,6 +893,7 @@ class OrderChangeManager:
         self.order = order
         self.user = user
         self.auth = auth
+        self.event = order.event
         self.split_order = None
         self._committed = False
         self._totaldiff = 0
@@ -860,33 +902,18 @@ class OrderChangeManager:
         self.notify = notify
         self._invoice_dirty = False
 
-    def change_item(self, position: OrderPosition, item: Item, variation: Optional[ItemVariation], keep_price=False):
+    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):
             raise OrderError(self.error_messages['product_without_variation'])
 
-        if keep_price:
-            price = TaxedPrice(gross=position.price, net=position.price - position.tax_value,
-                               tax=position.tax_value, rate=position.tax_rate,
-                               name=position.tax_rule.name if position.tax_rule else None)
-        else:
-            price = get_price(item, variation, voucher=position.voucher, subevent=position.subevent,
-                              invoice_address=self._invoice_address)
-
-        if price is None:  # NOQA
-            raise OrderError(self.error_messages['product_invalid'])
-
         new_quotas = (variation.quotas.filter(subevent=position.subevent)
                       if variation else item.quotas.filter(subevent=position.subevent))
         if not new_quotas:
             raise OrderError(self.error_messages['quota_missing'])
 
-        if self.order.event.settings.invoice_include_free or price.gross != Decimal('0.00') or position.price != Decimal('0.00'):
-            self._invoice_dirty = True
-
-        self._totaldiff += price.gross - position.price
         self._quotadiff.update(new_quotas)
         self._quotadiff.subtract(position.quotas)
-        self._operations.append(self.ItemOperation(position, item, variation, price))
+        self._operations.append(self.ItemOperation(position, item, variation))
 
     def change_subevent(self, position: OrderPosition, subevent: SubEvent):
         price = get_price(position.item, position.variation, voucher=position.voucher, subevent=subevent,
@@ -900,19 +927,15 @@ class OrderChangeManager:
         if not new_quotas:
             raise OrderError(self.error_messages['quota_missing'])
 
-        if self.order.event.settings.invoice_include_free or price.gross != Decimal('0.00') or position.price != Decimal('0.00'):
-            self._invoice_dirty = True
-
-        self._totaldiff += price.gross - position.price
         self._quotadiff.update(new_quotas)
         self._quotadiff.subtract(position.quotas)
-        self._operations.append(self.SubeventOperation(position, subevent, price))
+        self._operations.append(self.SubeventOperation(position, subevent))
 
     def regenerate_secret(self, position: OrderPosition):
         self._operations.append(self.RegenerateSecretOperation(position))
 
     def change_price(self, position: OrderPosition, price: Decimal):
-        price = position.item.tax(price)
+        price = position.item.tax(price, base_price_is='gross')
 
         self._totaldiff += price.gross - position.price
 
@@ -1069,14 +1092,11 @@ class OrderChangeManager:
                     'new_variation': op.variation.pk if op.variation else None,
                     'old_price': op.position.price,
                     'addon_to': op.position.addon_to_id,
-                    'new_price': op.price.gross
+                    'new_price': op.position.price
                 })
                 op.position.item = op.item
                 op.position.variation = op.variation
-                op.position.price = op.price.gross
-                op.position.tax_rate = op.price.rate
-                op.position.tax_value = op.price.tax
-                op.position.tax_rule = op.item.tax_rule
+                op.position._calculate_tax()
                 op.position.save()
             elif isinstance(op, self.SubeventOperation):
                 self.order.log_action('pretix.event.order.changed.subevent', user=self.user, auth=self.auth, data={
@@ -1085,13 +1105,9 @@ class OrderChangeManager:
                     'old_subevent': op.position.subevent.pk,
                     'new_subevent': op.subevent.pk,
                     'old_price': op.position.price,
-                    'new_price': op.price.gross
+                    'new_price': op.position.price
                 })
                 op.position.subevent = op.subevent
-                op.position.price = op.price.gross
-                op.position.tax_rate = op.price.rate
-                op.position.tax_value = op.price.tax
-                op.position.tax_rule = op.position.item.tax_rule
                 op.position.save()
             elif isinstance(op, self.PriceOperation):
                 self.order.log_action('pretix.event.order.changed.price', user=self.user, auth=self.auth, data={
@@ -1102,9 +1118,7 @@ class OrderChangeManager:
                     'new_price': op.price.gross
                 })
                 op.position.price = op.price.gross
-                op.position.tax_rate = op.price.rate
-                op.position.tax_value = op.price.tax
-                op.position.tax_rule = op.position.item.tax_rule
+                op.position._calculate_tax()
                 op.position.save()
             elif isinstance(op, self.CancelOperation):
                 for opa in op.position.addons.all():
@@ -1154,8 +1168,8 @@ class OrderChangeManager:
             elif isinstance(op, self.RegenerateSecretOperation):
                 op.position.secret = generate_position_secret()
                 op.position.save()
-                CachedTicket.objects.filter(order_position__order=self.order).delete()
-                CachedCombinedTicket.objects.filter(order=self.order).delete()
+                tickets.invalidate_cache.apply_async(kwargs={'event': self.event.pk,
+                                                             'order': self.order.pk})
                 self.order.log_action('pretix.event.order.changed.secret', user=self.user, auth=self.auth, data={
                     'position': op.position.pk,
                     'positionid': op.position.positionid,
@@ -1388,11 +1402,11 @@ class OrderChangeManager:
         order_changed.send(self.order.event, order=self.order)
 
     def _clear_tickets_cache(self):
-        CachedTicket.objects.filter(order_position__order=self.order).delete()
-        CachedCombinedTicket.objects.filter(order=self.order).delete()
+        tickets.invalidate_cache.apply_async(kwargs={'event': self.event.pk,
+                                                     'order': self.order.pk})
         if self.split_order:
-            CachedTicket.objects.filter(order_position__order=self.split_order).delete()
-            CachedCombinedTicket.objects.filter(order=self.split_order).delete()
+            tickets.invalidate_cache.apply_async(kwargs={'event': self.event.pk,
+                                                         'order': self.split_order.pk})
 
     def _get_payment_provider(self):
         lp = self.order.payments.last()

src/pretix/base/services/tickets.py

@@ -123,8 +123,10 @@ def get_tickets_for_order(order):
                     order=order, provider=p.identifier, file__isnull=False
                 ).last()
                 if not ct or not ct.file:
-                    retval = generate.apply(args=('order', order.pk, p.identifier))
-                    ct = CachedCombinedTicket.objects.get(pk=retval.get())
+                    retval = generate_order(order.pk, p.identifier)
+                    if not retval:
+                        continue
+                    ct = CachedCombinedTicket.objects.get(pk=retval)
                 tickets.append((
                     "{}-{}-{}{}".format(
                         order.event.slug.upper(), order.code, ct.provider, ct.extension,
@@ -140,8 +142,10 @@ def get_tickets_for_order(order):
                         order_position=pos, provider=p.identifier, file__isnull=False
                     ).last()
                     if not ct or not ct.file:
-                        retval = generate.apply(args=('orderposition', pos.pk, p.identifier))
-                        ct = CachedTicket.objects.get(pk=retval.get())
+                        retval = generate_orderposition(pos.pk, p.identifier)
+                        if not retval:
+                            continue
+                        ct = CachedCombinedTicket.objects.get(pk=retval)
                     tickets.append((
                         "{}-{}-{}-{}{}".format(
                             order.event.slug.upper(), order.code, pos.positionid, ct.provider, ct.extension,
@@ -152,3 +156,26 @@ def get_tickets_for_order(order):
                     logger.exception('Failed to generate ticket.')
 
     return tickets
+
+
+@app.task(base=ProfiledTask)
+def invalidate_cache(event: int, item: int=None, provider: str=None, order: int=None, **kwargs):
+    event = Event.objects.get(id=event)
+    qs = CachedTicket.objects.filter(order_position__order__event=event)
+    qsc = CachedCombinedTicket.objects.filter(order__event=event)
+
+    if item:
+        qs = qs.filter(order_position__item_id=item)
+
+    if provider:
+        qs = qs.filter(provider=provider)
+        qsc = qsc.filter(provider=provider)
+
+    if order:
+        qs = qs.filter(order_position__order_id=order)
+        qsc = qsc.filter(order_id=order)
+
+    for ct in qs:
+        ct.delete()
+    for ct in qsc:
+        ct.delete()

src/pretix/base/templates/400.html

@@ -1,6 +1,6 @@
 {% extends "error.html" %}
 {% load i18n %}
-{% load staticfiles %}
+{% load static %}
 {% block title %}{% trans "Bad Request" %}{% endblock %}
 {% block content %}
     <i class="fa fa-frown-o fa-fw big-icon"></i>

src/pretix/base/templates/403.html

@@ -1,6 +1,6 @@
 {% extends "error.html" %}
 {% load i18n %}
-{% load staticfiles %}
+{% load static %}
 {% block title %}{% trans "Permission denied" %}{% endblock %}
 {% block content %}
     <i class="fa fa-fw fa-lock big-icon"></i>

src/pretix/base/templates/404.html

@@ -1,6 +1,6 @@
 {% extends "error.html" %}
 {% load i18n %}
-{% load staticfiles %}
+{% load static %}
 {% block title %}{% trans "Not found" %}{% endblock %}
 {% block content %}
     <i class="fa fa-meh-o fa-fw big-icon"></i>

src/pretix/base/templates/500.html

@@ -1,6 +1,6 @@
 {% extends "error.html" %}
 {% load i18n %}
-{% load staticfiles %}
+{% load static %}
 {% block title %}{% trans "Internal Server Error" %}{% endblock %}
 {% block content %}
     <i class="fa fa-bolt big-icon fa-fw"></i>

src/pretix/base/templates/csrffail.html

@@ -1,6 +1,6 @@
 {% extends "error.html" %}
 {% load i18n %}
-{% load staticfiles %}
+{% load static %}
 {% block title %}{% trans "Verification failed" %}{% endblock %}
 {% block content %}
     <i class="fa fa-frown-o big-icon fa-fw"></i>

src/pretix/base/templates/debug_toolbar/base.html

@@ -1,66 +0,0 @@
-{% load i18n %}{% load static from staticfiles %}
-<link rel="stylesheet" href="{% static 'debug_toolbar/css/print.css' %}" type="text/css" media="print" />
-<link rel="stylesheet" href="{% static 'debug_toolbar/css/toolbar.css' %}" type="text/css" />
-
-<!-- Prevent our copy of jQuery from registering as an AMD module on sites that use RequireJS. -->
-    <script src="{% static 'debug_toolbar/js/jquery_pre.js' %}"></script>
-    <script type="text/javascript" src="{% static "jquery/js/jquery-2.1.1.min.js" %}"></script>
-    <script src="{% static 'debug_toolbar/js/jquery_post.js' %}"></script>
-
-<script src="{% static 'debug_toolbar/js/toolbar.js' %}"></script>
-<div id="djDebug" class="djdt-hidden" dir="ltr"
-     data-store-id="{{ toolbar.store_id }}" data-render-panel-url="{% url 'djdt:render_panel' %}"
-     {{ toolbar.config.ROOT_TAG_EXTRA_ATTRS|safe }}>
-	<div class="djdt-hidden" id="djDebugToolbar">
-		<ul id="djDebugPanelList">
-			{% if toolbar.panels %}
-			<li><a id="djHideToolBarButton" href="#" title="{% trans "Hide toolbar" %}">{% trans "Hide" %} &#187;</a></li>
-			{% else %}
-			<li id="djDebugButton">DEBUG</li>
-			{% endif %}
-			{% for panel in toolbar.panels %}
-				<li class="djDebugPanelButton">
-					<input type="checkbox" data-cookie="djdt{{ panel.panel_id }}" {% if panel.enabled %}checked="checked" title="{% trans "Disable for next and successive requests" %}"{% else %}title="{% trans "Enable for next and successive requests" %}"{% endif %} />
-					{% if panel.has_content and panel.enabled %}
-						<a href="#" title="{{ panel.title }}" class="{{ panel.panel_id }}">
-					{% else %}
-						<div class="djdt-contentless{% if not panel.enabled %} djdt-disabled{% endif %}">
-					{% endif %}
-					{{ panel.nav_title }}
-					{% if panel.enabled %}
-					{% with panel.nav_subtitle as subtitle %}
-						{% if subtitle %}<br /><small>{{ subtitle }}</small>{% endif %}
-					{% endwith %}
-					{% endif %}
-					{% if panel.has_content and panel.enabled %}
-						</a>
-					{% else %}
-						</div>
-					{% endif %}
-				</li>
-			{% endfor %}
-		</ul>
-	</div>
-	<div class="djdt-hidden" id="djDebugToolbarHandle">
-		<span title="{% trans "Show toolbar" %}" id="djShowToolBarButton">&#171;</span>
-	</div>
-	{% for panel in toolbar.panels %}
-		{% if panel.has_content and panel.enabled %}
-			<div id="{{ panel.panel_id }}" class="djdt-panelContent">
-				<div class="djDebugPanelTitle">
-					<a href="" class="djDebugClose"></a>
-					<h3>{{ panel.title|safe }}</h3>
-				</div>
-				<div class="djDebugPanelContent">
-					{% if toolbar.store_id %}
-					<img src="{% static 'debug_toolbar/img/ajax-loader.gif' %}" alt="loading" class="djdt-loader" />
-					<div class="djdt-scroll"></div>
-					{% else %}
-					<div class="djdt-scroll">{{ panel.content }}</div>
-					{% endif %}
-				</div>
-			</div>
-		{% endif %}
-	{% endfor %}
-	<div id="djDebugWindow" class="djdt-panelContent"></div>
-</div>

src/pretix/base/templates/error.html

@@ -1,6 +1,6 @@
 {% load compress %}
 {% load i18n %}
-{% load staticfiles %}
+{% load static %}
 <!DOCTYPE html>
 <html>
 <head>

src/pretix/base/templates/pretixbase/forms/widgets/thumbnailed_file_input.html

@@ -0,0 +1,6 @@
+{% load thumb %}
+{% if widget.is_initial %}{{ widget.initial_text }}: <a href="{{ widget.value.url }}">{{ widget.value }}</a>{% if not widget.required %}
+    <input type="checkbox" name="{{ widget.checkbox_name }}" id="{{ widget.checkbox_id }}">
+    <label for="{{ widget.checkbox_id }}">{{ widget.clear_checkbox_label }}</label>{% endif %}{% if widget.value.is_img %}<br><a href="{{ widget.value.url }}" data-lightbox="{{ widget.value.name }}"><img src="{{ widget.value|thumb:"200x100" }}" /></a>{% endif %}<br>
+    {{ widget.input_text }}:{% endif %}
+<input type="{{ widget.type }}" name="{{ widget.name }}"{% include "django/forms/widgets/attrs.html" %}>

src/pretix/base/templatetags/money.py

@@ -17,6 +17,7 @@ def money_filter(value: Decimal, arg='', hide_currency=False):
         raise TypeError("Invalid data type passed to money filter: %r" % type(value))
     if not arg:
         raise ValueError("No currency passed.")
+    arg = arg.upper()
 
     places = settings.CURRENCY_PLACES.get(arg, 2)
     rounded = value.quantize(Decimal('1') / 10 ** places, ROUND_HALF_UP)

src/pretix/base/templatetags/rich_text.py

@@ -72,9 +72,11 @@ def safelink_callback(attrs, new=False):
 
 
 def abslink_callback(attrs, new=False):
-    attrs[None, 'href'] = urllib.parse.urljoin(settings.SITE_URL, attrs.get((None, 'href'), '/'))
-    attrs[None, 'target'] = '_blank'
-    attrs[None, 'rel'] = 'noopener'
+    url = attrs.get((None, 'href'), '/')
+    if not url.startswith('mailto:') and not url.startswith('tel:'):
+        attrs[None, 'href'] = urllib.parse.urljoin(settings.SITE_URL, url)
+        attrs[None, 'target'] = '_blank'
+        attrs[None, 'rel'] = 'noopener'
     return attrs
 
 
@@ -90,7 +92,7 @@ def markdown_compile_email(source):
         tags=ALLOWED_TAGS,
         attributes=ALLOWED_ATTRIBUTES,
         protocols=ALLOWED_PROTOCOLS,
-    ))
+    ), parse_email=True)
 
 
 def markdown_compile(source):
@@ -116,6 +118,7 @@ def rich_text(text: str, **kwargs):
     text = str(text)
     body_md = bleach.linkify(
         markdown_compile(text),
-        callbacks=DEFAULT_CALLBACKS + ([safelink_callback] if kwargs.get('safelinks', True) else [abslink_callback])
+        callbacks=DEFAULT_CALLBACKS + ([safelink_callback] if kwargs.get('safelinks', True) else [abslink_callback]),
+        parse_email=True
     )
     return mark_safe(body_md)

src/pretix/base/views/errors.py

@@ -56,7 +56,9 @@ def page_not_found(request, exception):
     }
     template = get_template('404.html')
     body = template.render(context, request)
-    return HttpResponseNotFound(body)
+    r = HttpResponseNotFound(body)
+    r.xframe_options_exempt = True
+    return r
 
 
 @requires_csrf_token
@@ -65,7 +67,9 @@ def server_error(request):
         template = loader.get_template('500.html')
     except TemplateDoesNotExist:
         return HttpResponseServerError('<h1>Server Error (500)</h1>', content_type='text/html')
-    return HttpResponseServerError(template.render({
+    r = HttpResponseServerError(template.render({
         'request': request,
         'sentry_event_id': last_event_id(),
     }))
+    r.xframe_options_exempt = True
+    return r

src/pretix/base/views/js_catalog.py

@@ -2,7 +2,7 @@ from django.utils import timezone
 from django.utils.translation.trans_real import DjangoTranslation
 from django.views.decorators.cache import cache_page
 from django.views.decorators.http import etag
-from django.views.i18n import JavaScriptCatalog, render_javascript_catalog
+from django.views.i18n import JavaScriptCatalog
 
 # Yes, we want to regenerate this every time the module has been imported to
 # refresh the cache at least at every code deployment
@@ -21,4 +21,5 @@ js_info_dict = {
 def js_catalog(request, lang):
     c = JavaScriptCatalog()
     c.translation = DjangoTranslation(lang, domain='djangojs')
-    return render_javascript_catalog(c.get_catalog(), c.get_plural())
+    context = c.get_context_data()
+    return c.render_to_response(context)

src/pretix/base/views/metrics.py

@@ -20,10 +20,10 @@ def serve_metrics(request):
         return unauthed_response()
 
     # check if the user is properly authorized:
-    if "HTTP_AUTHORIZATION" not in request.META:
+    if "Authorization" not in request.headers:
         return unauthed_response()
 
-    method, credentials = request.META["HTTP_AUTHORIZATION"].split(" ", 1)
+    method, credentials = request.headers["Authorization"].split(" ", 1)
     if method.lower() != "basic":
         return unauthed_response()
 

src/pretix/base/views/tasks.py

@@ -133,7 +133,7 @@ class AsyncAction:
             return str(exception)
         else:
             logger.error('Unexpected exception: %r' % exception)
-            return _('An unexpected error has occurred.')
+            return _('An unexpected error has occurred, please try again later.')
 
     def get_success_message(self, value):
         return _('The task has been completed.')

src/pretix/control/forms/__init__.py

@@ -4,8 +4,8 @@ import os
 from django import forms
 from django.conf import settings
 from django.core.exceptions import ValidationError
+from django.core.files import File
 from django.forms.utils import from_current_timezone
-from django.utils.html import conditional_escape
 from django.utils.translation import ugettext_lazy as _
 
 from ...base.forms import I18nModelForm
@@ -67,16 +67,31 @@ def selector(values, prop):
 
 
 class ClearableBasenameFileInput(forms.ClearableFileInput):
+    template_name = 'pretixbase/forms/widgets/thumbnailed_file_input.html'
 
-    def get_template_substitution_values(self, value):
-        """
-        Return value-related substitutions.
-        """
-        bname = os.path.basename(value.name)
-        return {
-            'initial': conditional_escape(bname),
-            'initial_url': conditional_escape(value.url),
-        }
+    class FakeFile(File):
+        def __init__(self, file):
+            self.file = file
+
+        @property
+        def name(self):
+            return self.file.name
+
+        @property
+        def is_img(self):
+            return any(self.file.name.endswith(e) for e in ('.jpg', '.jpeg', '.png', '.gif'))
+
+        def __str__(self):
+            return os.path.basename(self.file.name).split('.', 1)[-1]
+
+        @property
+        def url(self):
+            return self.file.url
+
+    def get_context(self, name, value, attrs):
+        ctx = super().get_context(name, value, attrs)
+        ctx['widget']['value'] = self.FakeFile(value)
+        return ctx
 
 
 class ExtFileField(forms.FileField):

src/pretix/control/forms/event.py

@@ -279,7 +279,7 @@ class EventSettingsForm(SettingsForm):
     )
     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 the price that needs to be "
+        help_text=_("Independent of your choice, the cart will show gross prices as this is the price that needs to be "
                     "paid"),
         required=False
     )

src/pretix/control/forms/item.py

@@ -82,6 +82,7 @@ class QuestionForm(I18nModelForm):
             'type',
             'required',
             'ask_during_checkin',
+            'hidden',
             'identifier',
             'items',
             'dependency_question',
@@ -463,6 +464,7 @@ class ItemVariationForm(I18nModelForm):
             'value',
             'active',
             'default_price',
+            'original_price',
             'description',
         ]
 

src/pretix/control/forms/orders.py

@@ -9,9 +9,7 @@ from django.utils.timezone import now
 from django.utils.translation import pgettext_lazy, ugettext_lazy as _
 
 from pretix.base.forms import I18nModelForm, PlaceholderValidator
-from pretix.base.models import (
-    InvoiceAddress, Item, ItemAddOn, Order, OrderPosition,
-)
+from pretix.base.models import InvoiceAddress, ItemAddOn, Order, OrderPosition
 from pretix.base.models.event import SubEvent
 from pretix.base.services.pricing import get_price
 from pretix.control.forms.widgets import Select2
@@ -150,15 +148,6 @@ class CommentForm(I18nModelForm):
         }
 
 
-class SubEventChoiceField(forms.ModelChoiceField):
-    def label_from_instance(self, obj):
-        p = get_price(self.instance.item, self.instance.variation,
-                      voucher=self.instance.voucher,
-                      subevent=obj)
-        return '{} – {} ({})'.format(obj.name, obj.get_date_range_display(),
-                                     p.print(self.instance.order.event.currency))
-
-
 class OtherOperationsForm(forms.Form):
     recalculate_taxes = forms.BooleanField(
         label=_('Re-calculate taxes'),
@@ -265,12 +254,13 @@ class OrderPositionAddForm(forms.Form):
 
 
 class OrderPositionChangeForm(forms.Form):
-    itemvar = forms.ChoiceField()
-    subevent = SubEventChoiceField(
+    itemvar = forms.ChoiceField(
+        required=False,
+    )
+    subevent = forms.ModelChoiceField(
         SubEvent.objects.none(),
-        label=pgettext_lazy('subevent', 'New date'),
-        required=True,
-        empty_label=None
+        required=False,
+        empty_label=_('(Unchanged)')
     )
     price = forms.DecimalField(
         required=False,
@@ -278,53 +268,49 @@ class OrderPositionChangeForm(forms.Form):
         localize=True,
         label=_('New price (gross)')
     )
-    operation = forms.ChoiceField(
+    operation_secret = forms.BooleanField(
         required=False,
-        widget=forms.RadioSelect,
-        choices=(
-            ('product', 'Change product'),
-            ('price', 'Change price'),
-            ('subevent', 'Change event date'),
-            ('cancel', 'Remove product'),
-            ('split', 'Split into new order'),
-            ('secret', 'Regenerate secret'),
-        )
+        label=_('Generate a new secret')
+    )
+    operation_cancel = forms.BooleanField(
+        required=False,
+        label=_('Cancel this position')
+    )
+    operation_split = forms.BooleanField(
+        required=False,
+        label=_('Split into new order')
     )
-    change_product_keep_price = forms.BooleanField(required=False)
 
     def __init__(self, *args, **kwargs):
         instance = kwargs.pop('instance')
         initial = kwargs.get('initial', {})
 
-        try:
-            ia = instance.order.invoice_address
-        except InvoiceAddress.DoesNotExist:
-            ia = None
-
-        if instance:
-            try:
-                if instance.variation:
-                    initial['itemvar'] = '%d-%d' % (instance.item.pk, instance.variation.pk)
-                elif instance.item:
-                    initial['itemvar'] = str(instance.item.pk)
-            except Item.DoesNotExist:
-                pass
-
-            if instance.item.tax_rule and not instance.item.tax_rule.price_includes_tax:
-                initial['price'] = instance.price - instance.tax_value
-            else:
-                initial['price'] = instance.price
-        initial['subevent'] = instance.subevent
+        if instance.item.tax_rule and not instance.item.tax_rule.price_includes_tax:
+            initial['price'] = instance.price - instance.tax_value
+        else:
+            initial['price'] = instance.price
 
         kwargs['initial'] = initial
         super().__init__(*args, **kwargs)
         if instance.order.event.has_subevents:
-            self.fields['subevent'].instance = instance
             self.fields['subevent'].queryset = instance.order.event.subevents.all()
+            self.fields['subevent'].widget = Select2(
+                attrs={
+                    'data-model-select2': 'event',
+                    'data-select2-url': reverse('control:event.subevents.select2', kwargs={
+                        'event': instance.order.event.slug,
+                        'organizer': instance.order.event.organizer.slug,
+                    }),
+                    'data-placeholder': _('(Unchanged)')
+                }
+            )
+            self.fields['subevent'].widget.choices = self.fields['subevent'].choices
         else:
             del self.fields['subevent']
 
-        choices = []
+        choices = [
+            ('', _('(Unchanged)'))
+        ]
         for i in instance.order.event.items.prefetch_related('variations').all():
             pname = str(i)
             if not i.is_available():
@@ -333,14 +319,10 @@ class OrderPositionChangeForm(forms.Form):
 
             if variations:
                 for v in variations:
-                    p = get_price(i, v, voucher=instance.voucher, subevent=instance.subevent,
-                                  invoice_address=ia)
                     choices.append(('%d-%d' % (i.pk, v.pk),
-                                    '%s – %s (%s)' % (pname, v.value, p.print(instance.order.event.currency))))
+                                    '%s – %s' % (pname, v.value)))
             else:
-                p = get_price(i, None, voucher=instance.voucher, subevent=instance.subevent,
-                              invoice_address=ia)
-                choices.append((str(i.pk), '%s (%s)' % (pname, p.print(instance.order.event.currency))))
+                choices.append((str(i.pk), pname))
         self.fields['itemvar'].choices = choices
         change_decimal_field(self.fields['price'], instance.order.event.currency)
 

src/pretix/control/forms/subevents.py

@@ -29,6 +29,7 @@ class SubEventForm(I18nModelForm):
         fields = [
             'name',
             'active',
+            'is_public',
             'date_from',
             'date_to',
             'date_admission',

src/pretix/control/forms/vouchers.py

@@ -140,7 +140,7 @@ class VoucherForm(I18nModelForm):
             data['codes'] = [a.strip() for a in data.get('codes', '').strip().split("\n") if a]
             cnt = len(data['codes']) * data.get('max_usages', 0)
         else:
-            cnt = data['max_usages']
+            cnt = data.get('max_usages', 0)
 
         Voucher.clean_item_properties(
             data, self.instance.event,

src/pretix/control/logdisplay.py

@@ -189,6 +189,8 @@ def pretixcontrol_logentry_display(sender: Event, logentry: LogEntry, **kwargs):
         'pretix.event.order.payment.changed': _('A new payment {local_id} has been started instead of the previous one.'),
         'pretix.event.order.email.sent': _('An unidentified type email has been sent.'),
         'pretix.event.order.email.error': _('Sending of an email has failed.'),
+        'pretix.event.order.email.attachments.skipped': _('The email has been sent without attachments since they '
+                                                          'would have been too large to be likely to arrive.'),
         'pretix.event.order.email.custom_sent': _('A custom email has been sent.'),
         'pretix.event.order.email.download_reminder_sent': _('An email has been sent with a reminder that the ticket '
                                                              'is available for download.'),
@@ -389,6 +391,9 @@ def pretixcontrol_logentry_display(sender: Event, logentry: LogEntry, **kwargs):
     if logentry.action_type == 'pretix.team.invite.created':
         return _('{user} has been invited to the team.').format(user=data.get('email'))
 
+    if logentry.action_type == 'pretix.team.invite.resent':
+        return _('Invite for {user} has been resent.').format(user=data.get('email'))
+
     if logentry.action_type == 'pretix.team.invite.deleted':
         return _('The invite for {user} has been revoked.').format(user=data.get('email'))
 

src/pretix/control/signals.py

@@ -2,16 +2,6 @@ from django.dispatch import Signal
 
 from pretix.base.signals import DeprecatedSignal, EventPluginSignal
 
-restriction_formset = EventPluginSignal(
-    providing_args=["item"]
-)
-"""
-This signal is sent out to build configuration forms for all restriction formsets
-(see plugin API documentation for details).
-
-As with all plugin signals, the ``sender`` keyword argument will contain the event.
-"""
-
 html_page_start = Signal(
     providing_args=[]
 )

src/pretix/control/templates/pretixcontrol/auth/base.html

@@ -1,6 +1,6 @@
 {% load compress %}
 {% load i18n %}
-{% load staticfiles %}
+{% load static %}
 <!DOCTYPE html>
 <html>
 <head>

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

@@ -12,6 +12,7 @@
             {{ settings.PRETIX_INSTANCE_NAME }}</title>
 		{% compress css %}
     		<link rel="stylesheet" type="text/x-scss" href="{% static "pretixcontrol/scss/main.scss" %}" />
+            <link rel="stylesheet" type="text/x-scss" href="{% static "lightbox/css/lightbox.scss" %}" />
 		{% endcompress %}
         {% if DEBUG %}
             <script type="text/javascript" src="{% url 'javascript-catalog' lang=request.LANGUAGE_CODE %}"
@@ -43,6 +44,7 @@
             <script type="text/javascript" src="{% static "pretixcontrol/js/ui/subevent.js" %}"></script>
             <script type="text/javascript" src="{% static "pretixcontrol/js/ui/question.js" %}"></script>
             <script type="text/javascript" src="{% static "pretixcontrol/js/ui/mail.js" %}"></script>
+            <script type="text/javascript" src="{% static "pretixcontrol/js/ui/orderchange.js" %}"></script>
             <script type="text/javascript" src="{% static "pretixcontrol/js/ui/typeahead.js" %}"></script>
             <script type="text/javascript" src="{% static "pretixcontrol/js/ui/quicksetup.js" %}"></script>
             <script type="text/javascript" src="{% static "pretixbase/js/details.js" %}"></script>
@@ -50,6 +52,7 @@
             <script type="text/javascript" src="{% static "colorpicker/bootstrap-colorpicker.js" %}"></script>
             <script type="text/javascript" src="{% static "fileupload/jquery.ui.widget.js" %}"></script>
             <script type="text/javascript" src="{% static "fileupload/jquery.fileupload.js" %}"></script>
+            <script type="text/javascript" src="{% static "lightbox/js/lightbox.min.js" %}"></script>
 		{% endcompress %}
         {{ html_head|safe }}
 
@@ -101,6 +104,11 @@
                                 <i class="fa fa-eye"></i>
                             </a>
                         {% endif %}
+                    {% elif request.organizer %}
+                        <a href="{% eventurl request.organizer "presale:organizer.index" %}" title="{% trans "Public profile" %}"  target="_blank"
+                            class="navbar-toggle mobile-navbar-view-link">
+                            <i class="fa fa-eye"></i>
+                        </a>
                     {% endif %}
                     <a class="navbar-brand" href="{% url "control:index" %}">
                         <img src="{% static "pretixbase/img/pretix-icon.svg" %}" />
@@ -123,6 +131,12 @@
                                 </a>
                             {% endif %}
                         </li>
+                    {% elif request.organizer %}
+                        <li>
+                            <a href="{% eventurl request.organizer "presale:organizer.index" %}" title="{% trans "Public profile" %}"  target="_blank">
+                                <i class="fa fa-eye"></i> {% trans "Public profile" %}
+                            </a>
+                        </li>
                     {% endif %}
                 </ul>
                 <ul class="nav navbar-nav navbar-top-links navbar-right">
@@ -366,6 +380,12 @@
                     {% block content %}
                     {% endblock %}
                     <footer>
+                        {% if request.timezone %}
+                            <span class="fa fa-globe"></span>
+                            {% blocktrans trimmed with tz=request.timezone %}
+                                Times displayed in {{ tz }}
+                            {% endblocktrans %} &middot;
+                        {% endif %}
                         {% with "href='http://pretix.eu'" as a_attr %}
                             {% blocktrans trimmed %}
                                 powered by <a {{ a_attr }}>pretix</a>

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

@@ -95,7 +95,15 @@
                                 {% endif %}
                             </td>
                             <td>{{ e.item }}{% if e.variation %} – {{ e.variation }}{% endif %}</td>
-                            <td>{{ e.order.email }}</td>
+                            <td>
+                                {% if e.addon_to and e.addon_to.attendee_email %}
+                                    {{ e.addon_to.attendee_email }}
+                                {% elif e.attendee_email %}
+                                    {{ e.attendee_email }}
+                                {% else %}
+                                    {{ e.order.email }}
+                                {% endif %}
+                            </td>
                             <td>
                                 {% if e.addon_to %}
                                     {{ e.addon_to.attendee_name }}

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

@@ -38,7 +38,10 @@
                 {% empty %}
                     <tr>
                         <td colspan="3">
-                            {% trans "There are no payment providers available. Please go to the plugin settings and activate one or more payment plugins." %}
+                            {% url "control:event.settings.plugins" event=request.event.slug organizer=request.organizer.slug as plugin_settings_url %}
+                            {% blocktrans trimmed with plugin_settings_href='href="'|add:plugin_settings_url|add:'"'|safe %}
+                                There are no payment providers available. Please go to the <a {{ plugin_settings_href }}>plugin settings</a> and activate one or more payment plugins.
+                            {% endblocktrans %}
                         </td>
                     </tr>
                 {% endfor %}

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

@@ -40,7 +40,10 @@
                 </div>
             {% empty %}
                 <div class="alert alert-warning">
-                    {% trans "There are no ticket outputs available. Please go to the plugin settings and activate one or more ticket output plugins." %}</em>
+                    {% url "control:event.settings.plugins" event=request.event.slug organizer=request.organizer.slug as plugin_settings_url %}
+                    {% blocktrans trimmed with plugin_settings_href='href="'|add:plugin_settings_url|add:'"'|safe %}
+                        There are no ticket outputs available. Please go to the <a {{ plugin_settings_href }}>plugin settings</a> and activate one or more ticket output plugins.
+                    {% endblocktrans %}
                 </div>
             {% endfor %}
         </fieldset>

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

@@ -106,6 +106,9 @@
                                 {{ e.get_short_date_to_display }}
                             {% endif %}
                         {% endif %}
+                        {% if e.settings.timezone != request.timezone %}
+                            <span class="fa fa-globe text-muted" data-toggle="tooltip" title="{{ e.timezone }}"></span>
+                        {% endif %}
                     </td>
                     <td>
                         {% for q in e.first_quotas|slice:":3" %}

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

@@ -45,6 +45,7 @@
                             {% bootstrap_form_errors form %}
                             {% bootstrap_field form.active layout="control" %}
                             {% bootstrap_field form.default_price addon_after=request.event.currency layout="control" %}
+                            {% bootstrap_field form.original_price addon_after=request.event.currency layout="control" %}
                             {% bootstrap_field form.description layout="control" %}
                         </div>
                     </div>
@@ -78,6 +79,7 @@
                         <div class="panel-body form-horizontal">
                             {% bootstrap_field formset.empty_form.active layout="control" %}
                             {% bootstrap_field formset.empty_form.default_price addon_after=request.event.currency layout="control" %}
+                            {% bootstrap_field formset.empty_form.original_price addon_after=request.event.currency layout="control" %}
                             {% bootstrap_field formset.empty_form.description layout="control" %}
                         </div>
                     </div>

src/pretix/control/templates/pretixcontrol/items/question_edit.html

@@ -109,6 +109,7 @@
             {% bootstrap_field form.help_text layout="control" %}
             {% bootstrap_field form.identifier layout="control" %}
             {% bootstrap_field form.ask_during_checkin layout="control" %}
+            {% bootstrap_field form.hidden layout="control" %}
 
             <div class="form-group">
                 <label class="col-md-3 control-label" for="id_dependency_question">

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

@@ -1,6 +1,7 @@
 {% extends "pretixcontrol/event/base.html" %}
 {% load i18n %}
 {% load bootstrap3 %}
+{% load money %}
 {% block title %}
     {% blocktrans trimmed with code=order.code %}
         Change order: {{ code }}
@@ -71,92 +72,87 @@
                     </h3>
                 </div>
                 <div class="panel-body">
-                    <div class="form-inline form-order-change">
+                    <div class="form-order-change" data-pricecalc-endpoint="{% url "api-v1:orderposition-price_calc" organizer=order.event.organizer.slug event=order.event.slug pk=position.pk %}">
                         {% bootstrap_form_errors position.form %}
                         {% if position.custom_error %}
                             <div class="alert alert-danger">
                                 {{ position.custom_error }}
                             </div>
                         {% endif %}
-                        <p class="help-block">
-                            {% trans "Ticket secret:" %} {{ position.secret|slice:":12" }}…
-                        </p>
-                        <div class="radio">
-                            <label>
-                                <input name="{{ position.form.prefix }}-operation" type="radio" value=""
-                                        {% if not position.form.operation.value %}checked="checked"{% endif %}>
-                                {% trans "Keep unchanged" %}
-                            </label>
+                        <div class="row">
+                            <div class="col-sm-5 col-sm-offset-3">
+                                <strong>{% trans "Current value" %}</strong>
+                            </div>
+                            <div class="col-sm-4">
+                                <strong>{% trans "Change to" %}</strong>
+                            </div>
                         </div>
-                        <div class="radio">
-                            <label>
-                                <input name="{{ position.form.prefix }}-operation" type="radio" value="product"
-                                        {% if position.form.operation.value == "product" %}checked="checked"{% endif %}>
-                                {% trans "Change product to" %}
+                        <div class="row">
+                            <div class="col-sm-3">
+                                <strong>{% trans "Product" %}</strong>
+                            </div>
+                            <div class="col-sm-5">
+                                {{ position.item }}
+                                {% if position.variation %}
+                                    – {{ position.variation }}
+                                {% endif %}
+                            </div>
+                            <div class="col-sm-4">
                                 {% bootstrap_field position.form.itemvar layout='inline' %}
-                            </label>
-                            <label class="checkbox">
-                                {{ position.form.change_product_keep_price }}
-                                {% trans "Keep price the same" %}
-                            </label>
+                            </div>
                         </div>
+
                         {% if request.event.has_subevents %}
-                            <div class="radio">
-                                <label>
-                                    <input name="{{ position.form.prefix }}-operation" type="radio" value="subevent"
-                                            {% if position.form.operation.value == "subevent" %}checked="checked"{% endif %}>
-                                    {% trans "Change date to" context "subevent" %}
+                            <div class="row">
+                                <div class="col-sm-3">
+                                    <strong>{% trans "Date" context "subevent" %}</strong>
+                                </div>
+                                <div class="col-sm-5">
+                                    {{ position.subevent }}
+                                </div>
+                                <div class="col-sm-4">
                                     {% bootstrap_field position.form.subevent layout='inline' %}
-                                </label>
+                                </div>
                             </div>
                         {% endif %}
-                        <div class="radio">
-                            <label>
-                                <input name="{{ position.form.prefix }}-operation" type="radio" value="price"
-                                        {% if position.form.operation.value == "price" %}checked="checked"{% endif %}>
-                                {% trans "Change price to" %}
+
+                        <div class="row">
+                            <div class="col-sm-3">
+                                <strong>{% trans "Price" %}</strong>
+                            </div>
+                            <div class="col-sm-5">
+                                {{ position.price|money:request.event.currency }}<br>
+                                {% if position.tax_rate %}
+                                    <small>{% blocktrans trimmed with rate=position.tax_rate name=position.tax_rule.name %}
+                                        <strong>incl.</strong> {{ rate }}% {{ name }}
+                                    {% endblocktrans %}</small>
+                                {% endif %}
+                            </div>
+                            <div class="col-sm-4 field-container">
                                 {% bootstrap_field position.form.price addon_after=request.event.currency layout='inline' %}
-                                {% if position.apply_tax %}
-                                    {% if position.item.tax_rule and not position.item.tax_rule.price_includes_tax %}
-                                        {% blocktrans trimmed with rate=position.item.tax_rule.rate name=position.item.tax_rule.name %}
-                                            <strong>plus</strong> {{ rate }}% {{ name }}
-                                        {% endblocktrans %}
-                                    {% elif position.item.tax_rule %}
-                                        {% blocktrans trimmed with rate=position.item.tax_rule.rate name=position.item.tax_rule.name %}
-                                            <strong>incl.</strong> {{ rate }}% {{ name }}
-                                        {% endblocktrans %}
-                                    {% endif %}
-                                {% else %}
-                                    {% trans "no taxes apply" %}
-                                {% endif %}
-                            </label>
+                                <small><strong>{% trans "including all taxes" %}</strong></small>
+                            </div>
                         </div>
-                        <div class="radio">
-                            <label>
-                                <input name="{{ position.form.prefix }}-operation" type="radio" value="split"
-                                        {% if position.form.operation.value == "split" %}checked="checked"{% endif %}>
-                                {% trans "Split into new order" %}
-                            </label>
-                        </div>
-                        <div class="radio">
-                            <label>
-                                <input name="{{ position.form.prefix }}-operation" type="radio" value="secret"
-                                        {% if position.form.operation.value == "secret" %}checked="checked"{% endif %}>
-                                {% trans "Generate a new secret" %}
-                            </label>
-                        </div>
-                        <div class="radio">
-                            <label>
-                                <input name="{{ position.form.prefix }}-operation" type="radio" value="cancel"
-                                        {% if position.form.operation.value == "cancel" %}checked="checked"{% endif %}>
-                                {% trans "Cancel position" %}
-                                {% if position.addons.exists %}
-                                    <em class="text-danger">
-                                        {% trans "Removing this position will also remove all add-ons to this position." %}
-                                    </em>
-                                {% endif %}
-                            </label>
+
+                        <div class="row">
+                            <div class="col-sm-3">
+                                <strong>{% trans "Ticket secret" %}</strong>
+                            </div>
+                            <div class="col-sm-5">
+                                {{ position.secret|slice:":12" }}…
+                            </div>
+                            <div class="col-sm-4">
+                                {% bootstrap_field position.form.operation_secret layout='inline' %}
+                            </div>
                         </div>
+
+                        {% bootstrap_field position.form.operation_cancel layout='inline' %}
+                        {% bootstrap_field position.form.operation_split layout='inline' %}
+                        {% if position.addons.exists %}
+                            <em class="text-danger">
+                                {% trans "Removing this position will also remove all add-ons to this position." %}
+                            </em>
+                        {% endif %}
                     </div>
                 </div>
             </div>

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

@@ -118,7 +118,7 @@
                         <dt>{% trans "Order code" %}</dt>
                         <dd>{{ order.code }}</dd>
                         <dt>{% trans "Order date" %}</dt>
-                        <dd>{{ order.datetime }}</dd>
+                        <dd>{{ order.datetime|date:"SHORT_DATETIME_FORMAT" }}</dd>
                         {% if sales_channel %}
                             <dt>{% trans "Sales channel" %}</dt>
                             <dd>{{ sales_channel.verbose_name }}</dd>
@@ -132,7 +132,7 @@
                         </dd>
                         {% if order.status == "n" %}
                             <dt>{% trans "Expiry date" %}</dt>
-                            <dd>{{ order.expires }}</dd>
+                            <dd>{{ order.expires|date:"SHORT_DATETIME_FORMAT" }}</dd>
                         {% endif %}
                         <dt>{% trans "User" %}</dt>
                         <dd>
@@ -489,7 +489,27 @@
                                         {% if p.html_info %}
                                             <tr>
                                                 <td colspan="1"></td>
-                                                <td colspan="5">{{ p.html_info|safe }}</td>
+                                                <td colspan="5">
+                                                    {{ p.html_info|safe }}
+                                                    {% if staff_session %}
+                                                        <p>
+                                                            <a href="" class="btn btn-default btn-xs" data-expandpayment data-id="{{ p.pk }}">
+                                                                <span class="fa-eye fa fa-fw"></span>
+                                                                {% trans "Inspect" %}
+                                                            </a>
+                                                        </p>
+                                                    {% endif %}
+                                                </td>
+                                            </tr>
+                                        {% elif staff_session %}
+                                            <tr>
+                                                <td colspan="1"></td>
+                                                <td colspan="5">
+                                                    <a href="" class="btn btn-default btn-xs" data-expandpayment data-id="{{ p.pk }}">
+                                                        <span class="fa-eye fa fa-fw"></span>
+                                                        {% trans "Inspect" %}
+                                                    </a>
+                                                </td>
                                             </tr>
                                         {% endif %}
                                     {% endfor %}
@@ -574,6 +594,18 @@
                                                     {% endif %}
                                                 </td>
                                             </tr>
+                                            {% if staff_session %}
+                                                <tr>
+                                                    <td colspan="1"></td>
+                                                    <td colspan="7">
+                                                        <a href="" class="btn btn-default btn-xs" data-expandrefund
+                                                                data-id="{{ r.pk }}">
+                                                            <span class="fa-eye fa fa-fw"></span>
+                                                            {% trans "Inspect" %}
+                                                        </a>
+                                                    </td>
+                                                </tr>
+                                            {% endif %}
                                         {% endfor %}
                                         </tbody>
                                     </table>

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

@@ -3,8 +3,16 @@
 {% load bootstrap3 %}
 {% block inner %}
     <h1>
-        {% blocktrans with name=organizer.name %}Organizer: {{ name }}{% endblocktrans %}
+        {% blocktrans with name=request.organizer.name %}Organizer: {{ name }}{% endblocktrans %}
     </h1>
+    {% if "can_create_events" in request.orgapermset %}
+        <p>
+            <a href="{% url "control:events.add" %}" class="btn btn-default">
+                <span class="fa fa-plus"></span>
+                {% trans "Create a new event" %}
+            </a>
+        </p>
+    {% endif %}
     {% if events|length == 0 %}
         <p>
             <em>{% trans "You currently do not have access to any events." %}</em>
@@ -14,7 +22,12 @@
             <thead>
             <tr>
                 <th>{% trans "Event name" %}</th>
-                <th>{% trans "Start date" %}</th>
+                <th>
+                    {% trans "Start date" %}
+                    /
+                    {% trans "End date" %}
+                </th>
+                <th>{% trans "Status" %}</th>
                 <th></th>
             </tr>
             </thead>
@@ -25,16 +38,47 @@
                         <strong><a
                                 href="{% url "control:event.index" organizer=e.organizer.slug event=e.slug %}">{{ e.name }}</a></strong>
                     </td>
-                    <td>{{ e.get_date_from_display }}</td>
+                    <td>
+                        {% if e.has_subevents %}
+                            {{ e.min_from|default_if_none:""|date:"SHORT_DATETIME_FORMAT" }}
+                        {% else %}
+                            {{ e.get_short_date_from_display }}
+                        {% endif %}
+                        {% if e.has_subevents %}
+                            <span class="label label-default">{% trans "Series" %}</span>
+                        {% endif %}
+                        {% if e.settings.show_date_to and e.date_to %}
+                            –<br>
+                            {% if e.has_subevents %}
+                                {{ e.max_fromto|default_if_none:e.max_from|default_if_none:e.max_to|default_if_none:""|date:"SHORT_DATETIME_FORMAT" }}
+                            {% else %}
+                                {{ e.get_short_date_to_display }}
+                            {% endif %}
+                        {% endif %}
+                        {% if e.settings.timezone != request.timezone %}
+                            <span class="fa fa-globe text-muted" data-toggle="tooltip" title="{{ e.timezone }}"></span>
+                        {% endif %}
+                    </td>
+                    <td>
+                        {% if not e.live %}
+                            <span class="label label-danger">{% trans "Shop disabled" %}</span>
+                            {% elif e.presale_has_ended %}
+                            <span class="label label-warning">{% trans "Presale over" %}</span>
+                            {% elif not e.presale_is_running %}
+                            <span class="label label-warning">{% trans "Presale not started" %}</span>
+                        {% else %}
+                            <span class="label label-success">{% trans "On sale" %}</span>
+                        {% endif %}
+                    </td>
                     <td class="text-right">
                         <a href="{% url "control:event.index" organizer=e.organizer.slug event=e.slug %}"
-                                class="btn btn-sm btn-default" title="{% trans "Open event dashboard" %}"
-                                data-toggle="tooltip">
+                           class="btn btn-sm btn-default" title="{% trans "Open event dashboard" %}"
+                           data-toggle="tooltip">
                             <span class="fa fa-eye"></span>
                         </a>
                         {% if "can_create_events" in request.orgapermset %}
                             <a href="{% url "control:events.add" %}?clone={{ e.pk }}" class="btn btn-sm btn-default"
-                                    title="{% trans "Clone event" %}" data-toggle="tooltip">
+                               title="{% trans "Clone event" %}" data-toggle="tooltip">
                                 <span class="fa fa-copy"></span>
                             </a>
                         {% endif %}
@@ -43,11 +87,6 @@
             {% endfor %}
             </tbody>
         </table>
-    {% endif %}
-    {% if "can_create_events" in request.orgapermset %}
-        <a href="{% url "control:events.add" %}" class="btn btn-default">
-            <span class="fa fa-plus"></span>
-            {% trans "Create a new event" %}
-        </a>
+        {% include "pretixcontrol/pagination.html" %}
     {% endif %}
 {% endblock %}

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

@@ -1,6 +1,6 @@
 {% extends "pretixcontrol/organizers/base.html" %}
 {% load i18n %}
-{% load staticfiles %}
+{% load static %}
 {% load bootstrap3 %}
 {% block inner %}
     <h1>{% trans "Connect to device:" %} {{ device.name }}</h1>

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

@@ -51,6 +51,11 @@
                         {{ i.email }}
                         <span class="fa fa-envelope-o" data-toggle="tooltip"
                               title="{% trans "invited, pending response" %}"></span>
+                        <button type="submit" name="resend-invite" value="{{ i.id }}"
+                                data-toggle="tooltip" title="{% trans "resend invite" %}"
+                                class="btn-invisible">
+                            <span class="fa fa-repeat"></span>
+                        </button>
                     </td>
                     <td class="text-right">
                         <button type="submit" name="remove-invite" value="{{ i.id }}"

src/pretix/control/templates/pretixcontrol/subevents/bulk.html

@@ -269,6 +269,7 @@
             {% bootstrap_field form.location layout="control" %}
             {% bootstrap_field form.time_admission layout="control" %}
             {% bootstrap_field form.frontpage_text layout="control" %}
+            {% bootstrap_field form.is_public layout="control" %}
             {% if meta_forms %}
                 <div class="form-group metadata-group">
                     <label class="col-md-3 control-label">{% trans "Meta data" %}</label>

src/pretix/control/templates/pretixcontrol/subevents/detail.html

@@ -27,6 +27,7 @@
                     {% bootstrap_field form.location layout="control" %}
                     {% bootstrap_field form.date_admission layout="control" %}
                     {% bootstrap_field form.frontpage_text layout="control" %}
+                    {% bootstrap_field form.is_public layout="control" %}
                     {% if meta_forms %}
                         <div class="form-group metadata-group">
                             <label class="col-md-3 control-label">{% trans "Meta data" %}</label>

src/pretix/control/urls.py

@@ -19,6 +19,8 @@ urlpatterns = [
     url(r'^global/update/$', global_settings.UpdateCheckView.as_view(), name='global.update'),
     url(r'^global/message/$', global_settings.MessageView.as_view(), name='global.message'),
     url(r'^logdetail/$', global_settings.LogDetailView.as_view(), name='global.logdetail'),
+    url(r'^logdetail/payment/$', global_settings.PaymentDetailView.as_view(), name='global.paymentdetail'),
+    url(r'^logdetail/refund/$', global_settings.RefundDetailView.as_view(), name='global.refunddetail'),
     url(r'^reauth/$', user.ReauthView.as_view(), name='user.reauth'),
     url(r'^sudo/$', user.StartStaffSession.as_view(), name='user.sudo'),
     url(r'^sudo/stop/$', user.StopStaffSession.as_view(), name='user.sudo.stop'),

src/pretix/control/views/checkin.py

@@ -100,6 +100,7 @@ class CheckInListShow(EventPermissionRequiredMixin, PaginationMixin, ListView):
                         'list': self.list.pk,
                         'web': True
                     }, user=request.user)
+                    op.order.touch()
 
             messages.success(request, _('The selected check-ins have been reverted.'))
         else:
@@ -247,7 +248,7 @@ class CheckinListDelete(EventPermissionRequiredMixin, DeleteView):
         self.object = self.get_object()
         success_url = self.get_success_url()
         self.object.checkins.all().delete()
-        self.object.log_action(action='pretix.event.orders.deleted', user=request.user)
+        self.object.log_action(action='pretix.event.checkinlists.deleted', user=request.user)
         self.object.delete()
         messages.success(self.request, _('The selected list has been deleted.'))
         return HttpResponseRedirect(success_url)

src/pretix/control/views/dashboards.py

@@ -360,7 +360,8 @@ def widgets_for_event_qs(request, qs, user, nmax):
         '_settings_objects', 'organizer___settings_objects'
     ).select_related('organizer')[:nmax]
     for event in events:
-        tz = pytz.timezone(event.cache.get_or_set('timezone', lambda: event.settings.timezone))
+        tzname = event.cache.get_or_set('timezone', lambda: event.settings.timezone)
+        tz = pytz.timezone(tzname)
         if event.has_subevents:
             if event.min_from is None:
                 dr = pgettext("subevent", "No dates")
@@ -393,6 +394,9 @@ def widgets_for_event_qs(request, qs, user, nmax):
                     ((date_format(event.date_admission.astimezone(tz), 'TIME_FORMAT') + ' / ')
                      if event.date_admission and event.date_admission != event.date_from else '')
                     + (date_format(event.date_from.astimezone(tz), 'TIME_FORMAT') if event.date_from else '')
+                ) + (
+                    ' <span class="fa fa-globe text-muted" data-toggle="tooltip" title="{}"></span>'.format(tzname)
+                    if tzname != request.timezone and not event.has_subevents else ''
                 ),
                 url=reverse('control:event.index', kwargs={
                     'event': event.slug,

src/pretix/control/views/event.py

@@ -31,8 +31,7 @@ from pytz import timezone
 from pretix.base.channels import get_all_sales_channels
 from pretix.base.i18n import LazyCurrencyNumber
 from pretix.base.models import (
-    CachedCombinedTicket, CachedTicket, Event, LogEntry, Order, RequiredAction,
-    TaxRule, Voucher,
+    Event, LogEntry, Order, RequiredAction, TaxRule, Voucher,
 )
 from pretix.base.models.event import EventMetaValue
 from pretix.base.services import tickets
@@ -789,12 +788,7 @@ class TicketSettings(EventSettingsViewMixin, EventPermissionRequiredMixin, FormV
                             for k in provider.form.changed_data
                         }
                     )
-                    CachedTicket.objects.filter(
-                        order_position__order__event=self.request.event, provider=provider.identifier
-                    ).delete()
-                    CachedCombinedTicket.objects.filter(
-                        order__event=self.request.event, provider=provider.identifier
-                    ).delete()
+                    tickets.invalidate_cache.apply_async(kwargs={'event': self.request.event.pk, 'provider': provider.identifier})
             else:
                 success = False
         form = self.get_form(self.get_form_class())

src/pretix/control/views/global_settings.py

@@ -5,7 +5,7 @@ from django.utils.translation import ugettext_lazy as _
 from django.views import View
 from django.views.generic import FormView, TemplateView
 
-from pretix.base.models import LogEntry
+from pretix.base.models import LogEntry, OrderPayment, OrderRefund
 from pretix.base.services.update_check import check_result_table, update_check
 from pretix.base.settings import GlobalSettingsObject
 from pretix.control.forms.global_settings import (
@@ -71,3 +71,15 @@ class LogDetailView(AdministratorPermissionRequiredMixin, View):
     def get(self, request, *args, **kwargs):
         le = get_object_or_404(LogEntry, pk=request.GET.get('pk'))
         return JsonResponse({'data': le.parsed_data})
+
+
+class PaymentDetailView(AdministratorPermissionRequiredMixin, View):
+    def get(self, request, *args, **kwargs):
+        p = get_object_or_404(OrderPayment, pk=request.GET.get('pk'))
+        return JsonResponse({'data': p.info_data})
+
+
+class RefundDetailView(AdministratorPermissionRequiredMixin, View):
+    def get(self, request, *args, **kwargs):
+        p = get_object_or_404(OrderRefund, pk=request.GET.get('pk'))
+        return JsonResponse({'data': p.info_data})

src/pretix/control/views/item.py

@@ -15,14 +15,16 @@ from django.views.generic import ListView
 from django.views.generic.base import TemplateView
 from django.views.generic.detail import DetailView, SingleObjectMixin
 from django.views.generic.edit import DeleteView
+from django_countries.fields import Country
 
 from pretix.base.forms import I18nFormSet
 from pretix.base.models import (
-    CachedTicket, CartPosition, Item, ItemCategory, ItemVariation, Order,
-    Question, QuestionAnswer, QuestionOption, Quota, Voucher,
+    CartPosition, Item, ItemCategory, ItemVariation, Order, Question,
+    QuestionAnswer, QuestionOption, Quota, Voucher,
 )
 from pretix.base.models.event import SubEvent
 from pretix.base.models.items import ItemAddOn, ItemBundle
+from pretix.base.services.tickets import invalidate_cache
 from pretix.control.forms.item import (
     CategoryForm, ItemAddOnForm, ItemAddOnsFormSet, ItemBundleForm,
     ItemBundleFormSet, ItemCreateForm, ItemUpdateForm, ItemVariationForm,
@@ -49,7 +51,9 @@ class ItemList(ListView):
             event=self.request.event
         ).annotate(
             var_count=Count('variations')
-        ).prefetch_related("category")
+        ).prefetch_related("category").order_by(
+            'category__position', 'category', 'position'
+        )
 
 
 def item_move(request, item, up=True):
@@ -441,6 +445,10 @@ class QuestionView(EventPermissionRequiredMixin, QuestionMixin, ChartContainingV
                     a['alink'] = a['answer']
                     a['answer'] = ugettext('Yes') if a['answer'] == 'True' else ugettext('No')
                     a['answer_bool'] = a['answer'] == 'True'
+            elif self.object.type == Question.TYPE_COUNTRYCODE:
+                for a in qs:
+                    a['alink'] = a['answer']
+                    a['answer'] = Country(a['answer']).name or a['answer']
 
         return list(qs)
 
@@ -873,7 +881,7 @@ class ItemUpdateGeneral(ItemDetailMixin, EventPermissionRequiredMixin, UpdateVie
             self.object.log_action(
                 'pretix.event.item.changed', user=self.request.user, data=data
             )
-            CachedTicket.objects.filter(order_position__item=self.item).delete()
+            invalidate_cache.apply_async(kwargs={'event': self.request.event.pk, 'item': self.object.pk})
         for f in self.plugin_forms:
             f.save()
         return super().form_valid(form)

src/pretix/control/views/orders.py

@@ -2,6 +2,7 @@ import json
 import logging
 import mimetypes
 import os
+import re
 from datetime import timedelta
 from decimal import Decimal, DecimalException
 
@@ -43,6 +44,7 @@ from pretix.base.models.orders import (
 )
 from pretix.base.models.tax import EU_COUNTRIES
 from pretix.base.payment import PaymentException
+from pretix.base.services import tickets
 from pretix.base.services.export import export
 from pretix.base.services.invoices import (
     generate_cancellation, generate_invoice, invoice_pdf, invoice_pdf_task,
@@ -1239,7 +1241,11 @@ class OrderChange(OrderView):
                 return False
 
             try:
-                if p.form.cleaned_data['operation'] == 'product':
+                if p.form.cleaned_data['operation_cancel']:
+                    ocm.cancel(p)
+                    continue
+
+                if p.form.cleaned_data['itemvar']:
                     if '-' in p.form.cleaned_data['itemvar']:
                         itemid, varid = p.form.cleaned_data['itemvar'].split('-')
                     else:
@@ -1250,16 +1256,19 @@ class OrderChange(OrderView):
                         variation = ItemVariation.objects.get(pk=varid, item=item)
                     else:
                         variation = None
-                    ocm.change_item(p, item, variation, keep_price=p.form.cleaned_data['change_product_keep_price'])
-                elif p.form.cleaned_data['operation'] == 'price':
-                    ocm.change_price(p, p.form.cleaned_data['price'])
-                elif p.form.cleaned_data['operation'] == 'subevent':
+                    if item != p.item or variation != p.variation:
+                        ocm.change_item(p, item, variation)
+
+                if self.request.event.has_subevents and p.form.cleaned_data['subevent'] and p.form.cleaned_data['subevent'] != p.subevent:
                     ocm.change_subevent(p, p.form.cleaned_data['subevent'])
-                elif p.form.cleaned_data['operation'] == 'cancel':
-                    ocm.cancel(p)
-                elif p.form.cleaned_data['operation'] == 'split':
+
+                if p.form.cleaned_data['price'] != p.price:
+                    ocm.change_price(p, p.form.cleaned_data['price'])
+
+                if p.form.cleaned_data['operation_split']:
                     ocm.split(p)
-                elif p.form.cleaned_data['operation'] == 'secret':
+
+                if p.form.cleaned_data['operation_secret']:
                     ocm.regenerate_secret(p)
 
             except OrderError as e:
@@ -1319,8 +1328,7 @@ class OrderModifyInformation(OrderQuestionsViewMixin, OrderView):
                                'you need to do this manually.')
             messages.success(self.request, _(success_message))
 
-        CachedTicket.objects.filter(order_position__order=self.order).delete()
-        CachedCombinedTicket.objects.filter(order=self.order).delete()
+        tickets.invalidate_cache.apply_async(kwargs={'event': self.request.event.pk, 'order': self.order.pk})
 
         order_modified.send(sender=self.request.event, order=self.order)
         return redirect(self.get_order_url())
@@ -1363,8 +1371,7 @@ class OrderContactChange(OrderView):
                 for op in self.order.all_positions.all():
                     op.secret = generate_position_secret()
                     op.save()
-                CachedTicket.objects.filter(order_position__order=self.order).delete()
-                CachedCombinedTicket.objects.filter(order=self.order).delete()
+                tickets.invalidate_cache.apply_async(kwargs={'event': self.request.event.pk, 'order': self.order.pk})
                 self.order.log_action('pretix.event.order.secret.changed', user=self.request.user)
 
             self.form.save()
@@ -1405,6 +1412,7 @@ class OrderLocaleChange(OrderView):
             )
 
             self.form.save()
+            tickets.invalidate_cache.apply_async(kwargs={'event': self.request.event.pk, 'order': self.order.pk})
             messages.success(self.request, _('The order has been changed.'))
             return redirect(self.get_order_url())
         return self.get(*args, **kwargs)
@@ -1585,6 +1593,10 @@ class OrderGo(EventPermissionRequiredMixin, View):
 
     def get(self, request, *args, **kwargs):
         code = request.GET.get("code", "").upper().strip()
+        if '://' in code:
+            m = re.match('.*/ORDER/([A-Z0-9]{' + str(settings.ENTROPY['order_code']) + '})/.*', code)
+            if m:
+                code = m.group(1)
         try:
             if code.startswith(request.event.slug.upper()):
                 code = code[len(request.event.slug):]

src/pretix/control/views/organizer.py

@@ -6,7 +6,8 @@ from django.contrib import messages
 from django.core.exceptions import PermissionDenied
 from django.core.files import File
 from django.db import transaction
-from django.db.models import Count, ProtectedError
+from django.db.models import Count, Max, Min, ProtectedError
+from django.db.models.functions import Coalesce, Greatest
 from django.forms import inlineformset_factory
 from django.http import JsonResponse
 from django.shortcuts import get_object_or_404, redirect
@@ -19,7 +20,7 @@ from django.views.generic import (
 
 from pretix.api.models import WebHook
 from pretix.base.models import Device, Organizer, Team, TeamInvite, User
-from pretix.base.models.event import EventMetaProperty
+from pretix.base.models.event import Event, EventMetaProperty
 from pretix.base.models.organizer import TeamAPIToken
 from pretix.base.services.mail import SendMailException, mail
 from pretix.control.forms.filter import OrganizerFilterForm
@@ -86,18 +87,33 @@ class OrganizerDetailViewMixin:
         return self.request.organizer
 
 
-class OrganizerDetail(OrganizerDetailViewMixin, OrganizerPermissionRequiredMixin, DetailView):
-    model = Organizer
+class OrganizerDetail(OrganizerDetailViewMixin, OrganizerPermissionRequiredMixin, ListView):
+    model = Event
     template_name = 'pretixcontrol/organizers/detail.html'
     permission = None
-    context_object_name = 'organizer'
+    context_object_name = 'events'
 
-    def get_object(self, queryset=None) -> Organizer:
+    @property
+    def organizer(self):
         return self.request.organizer
 
+    def get_queryset(self):
+        qs = self.request.user.get_events_with_any_permission(self.request).select_related('organizer').prefetch_related(
+            '_settings_objects', 'organizer___settings_objects'
+        ).filter(organizer=self.request.organizer).order_by('-date_from')
+        qs = qs.annotate(
+            min_from=Min('subevents__date_from'),
+            max_from=Max('subevents__date_from'),
+            max_to=Max('subevents__date_to'),
+            max_fromto=Greatest(Max('subevents__date_to'), Max('subevents__date_from'))
+        ).annotate(
+            order_from=Coalesce('min_from', 'date_from'),
+            order_to=Coalesce('max_fromto', 'max_to', 'max_from', 'date_to', 'date_from'),
+        )
+        return qs
+
     def get_context_data(self, **kwargs):
         ctx = super().get_context_data(**kwargs)
-        ctx['events'] = self.request.organizer.events.all()
         return ctx
 
 
@@ -518,7 +534,7 @@ class TeamMemberView(OrganizerDetailViewMixin, OrganizerPermissionRequiredMixin,
         if 'remove-member' in request.POST:
             try:
                 user = User.objects.get(pk=request.POST.get('remove-member'))
-            except User.DoesNotExist:
+            except (User.DoesNotExist, ValueError):
                 pass
             else:
                 other_admin_teams = self.request.organizer.teams.exclude(pk=self.object.pk).filter(
@@ -542,7 +558,7 @@ class TeamMemberView(OrganizerDetailViewMixin, OrganizerPermissionRequiredMixin,
         elif 'remove-invite' in request.POST:
             try:
                 invite = self.object.invites.get(pk=request.POST.get('remove-invite'))
-            except TeamInvite.DoesNotExist:
+            except (TeamInvite.DoesNotExist, ValueError):
                 messages.error(self.request, _('Invalid invite selected.'))
                 return redirect(self.get_success_url())
             else:
@@ -555,10 +571,26 @@ class TeamMemberView(OrganizerDetailViewMixin, OrganizerPermissionRequiredMixin,
                 messages.success(self.request, _('The invite has been revoked.'))
                 return redirect(self.get_success_url())
 
+        elif 'resend-invite' in request.POST:
+            try:
+                invite = self.object.invites.get(pk=request.POST.get('resend-invite'))
+            except (TeamInvite.DoesNotExist, ValueError):
+                messages.error(self.request, _('Invalid invite selected.'))
+                return redirect(self.get_success_url())
+            else:
+                self._send_invite(invite)
+                self.object.log_action(
+                    'pretix.team.invite.resent', user=self.request.user, data={
+                        'email': invite.email
+                    }
+                )
+                messages.success(self.request, _('The invite has been resent.'))
+                return redirect(self.get_success_url())
+
         elif 'remove-token' in request.POST:
             try:
                 token = self.object.tokens.get(pk=request.POST.get('remove-token'))
-            except TeamAPIToken.DoesNotExist:
+            except (TeamAPIToken.DoesNotExist, ValueError):
                 messages.error(self.request, _('Invalid token selected.'))
                 return redirect(self.get_success_url())
             else: