clarify docs

[CI skip]

Signed-off-by: Raphael Michel <michel@rami.io>

.clabot

@@ -1,5 +1,5 @@
 {
   "contributors": "https://crm.rami.io/cla/check/?project=pretix&checkContributor=",
-  "message": "Hey there! :) Thank you very much for offering a contribution to pretix! For legal reasons, we need you to sign a Contributor License Agreement in order to be able to merge the code. Sorry for the hassle :( Please download the agreement from https://pretix.eu/about/en/cla and send a signed copy to support@pretix.eu. Feel free to also contact us there or via comments here if you have any questions!",
+  "message": "Hey there! :) Thank you very much for offering a contribution to pretix! For legal reasons, we need you to sign a Contributor License Agreement in order to be able to merge the code. Sorry for the hassle :( Please download the agreement from https://pretix.eu/about/en/cla and send a signed copy to support@pretix.eu. Feel free to also contact us there or via comments here if you have any questions!\n\nFeel free to ignore me on documentation changes, translations, and trivial PRs like typo fixes (and similar single-line changes) – we can merge these without a CLA as well.",
   "label": "cla-signed"
 }

.licenseheader

@@ -1,7 +1,7 @@
 This file is part of pretix (Community Edition).
 
-Copyright (C) 2014-2020 Raphael Michel and contributors
-Copyright (C) 2020-2021 rami.io GmbH and contributors
+Copyright (C) 2014-2020  Raphael Michel and contributors
+Copyright (C) 2020-today pretix GmbH and contributors
 
 This program is free software: you can redistribute it and/or modify it under the terms of the GNU Affero General
 Public License as published by the Free Software Foundation in version 3 of the License.

README.rst

@@ -8,6 +8,7 @@ pretix
    :target: https://docs.pretix.eu/
 
 .. image:: https://github.com/pretix/pretix/workflows/Tests/badge.svg
+   :target: https://github.com/pretix/pretix/actions/workflows/tests.yml
 
 .. image:: https://codecov.io/gh/pretix/pretix/branch/master/graph/badge.svg
    :target: https://codecov.io/gh/pretix/pretix

SECURITY.md

@@ -2,11 +2,11 @@
 
 ## Reporting a vulnerability
 
-If you discover a vulnerability with our software or server systems, please report it to us in private. Do not to attempt to harm our users, customer's data or our system's availability when looking for vulneratbilities.
+If you discover a vulnerability with our software or server systems, please report it to us in private. Do not to attempt to harm our users, customer's data or our system's availability when looking for vulnerabilities.
 
 Please contact us at security@pretix.eu with full details and steps to reproduce and allow reasonable time for us to resolve the issue before publishing your findings. If you wish to encrypt your email, you can find our GPG key [here](https://pretix.eu/.well-known/security@pretix.eu.asc).
 
-We're not large enough to run a formal bug bounty program, but if you find a serious vulnerability in our service, we will find a way to show our gratitude. 
+Please also see our [Responsible disclosure policy](https://docs.pretix.eu/trust/security/disclosure/).
 
 ## Version support
 
@@ -18,3 +18,5 @@ subscribe to our [newsletter](https://pretix.eu/about/en/blog/) in the "News abo
 category, we will also send you an email on security issues. 
 
 Past security issues are listed [on our website](https://pretix.eu/about/en/security).
+
+Please also see our [Release cycle](https://docs.pretix.eu/trust/lifecycle/release-cycle/) documentation.

doc/api/resources/carts.rst

@@ -48,11 +48,6 @@ seat                                  objects                    The assigned se
 └ seat_guid                           string                     Identifier of the seat within the seating plan
 ===================================== ========================== =======================================================
 
-.. versionchanged:: 4.14
-
-   This ``is_bundled`` attribute has been added and the cart creation endpoints have been updated.
-
-
 Cart position endpoints
 -----------------------
 

doc/api/resources/certificates.rst

@@ -23,7 +23,7 @@ Certificate download
 
    .. sourcecode:: http
 
-      GET /api/v1/organizers/bigevents/events/sampleconf/orderpositions/23442/download/certificate/ HTTP/1.1
+      GET /api/v1/organizers/bigevents/events/sampleconf/orderpositions/23442/certificate/ HTTP/1.1
       Host: pretix.eu
       Accept: application/json, text/javascript
 
@@ -38,7 +38,7 @@ Certificate download
 
    .. sourcecode:: http
 
-      GET /api/v1/organizers/bigevents/events/sampleconf/orderpositions/23442/download/certificate/?result=1f550651-ae7b-4911-a76c-2be8f348aaa5 HTTP/1.1
+      GET /api/v1/organizers/bigevents/events/sampleconf/orderpositions/23442/certificate/?result=1f550651-ae7b-4911-a76c-2be8f348aaa5 HTTP/1.1
       Host: pretix.eu
       Accept: application/json, text/javascript
 

doc/api/resources/checkin.rst

@@ -9,14 +9,6 @@ This page describes special APIs built for ticket scanning apps. For managing ch
 please also see :ref:`rest-checkinlists`. The check-in list API also contains endpoints to obtain statistics or log
 failed scans.
 
-.. versionchanged:: 4.12
-
-    The endpoints listed on this page have been added.
-
-.. versionchanged:: 4.18
-
-    The ``source_type`` parameter has been added.
-
 .. _`rest-checkin-redeem`:
 
 Checking a ticket in
@@ -54,6 +46,11 @@ Checking a ticket in
                         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
                         allows for a certain level of idempotency and enables you to re-try after a connection failure.
+   :<json boolean use_order_locale: Specifies that pretix should use the customer's language (``locale`` field from the
+                                    order) when building texts (currently only the ``reason_explanation`` response field).
+                                    Defaults to ``false`` in which case the server will determine the language (currently
+                                    the event default language, might change in the future with support for the
+                                    ``Accept-Language`` header).
    :>json string status: ``"ok"``, ``"incomplete"``, or ``"error"``
    :>json string reason: Reason code, only set on status ``"error"``, see below for possible values.
    :>json string reason_explanation: Human-readable explanation, only set on status ``"error"`` and reason ``"rules"``, can be null.
@@ -62,7 +59,9 @@ Checking a ticket in
                            will only include check-ins for the selected list. (2) An additional boolean property
                            ``require_attention`` will inform you whether either the order or the item have the
                            ``checkin_attention`` flag set. (3) If ``attendee_name`` is empty, it may automatically fall
-                           back to values from a parent product or from invoice addresses.
+                           back to values from a parent product or from invoice addresses. (4) Additional properties
+                           ``order__status``, ``order__valid_if_pending``, ``order__require_approval``, and
+                           ``order__locale`` are included with details form the order for convenience.
    :>json boolean require_attention: Whether or not the ``require_attention`` flag is set on the item or order.
    :>json list checkin_texts: List of additional texts to show to the user.
    :>json object list: Excerpt of information about the matching :ref:`check-in list <rest-checkinlists>` (if any was found),
@@ -360,3 +359,156 @@ Performing a ticket search
    :statuscode 401: Authentication failure
    :statuscode 403: The requested organizer or check-in list does not exist **or** you have no permission to view this resource.
    :statuscode 404: The requested check-in list does not exist.
+
+.. _`rest-checkin-annul`:
+
+Annulment of a check-in
+-----------------------
+
+.. http:post:: /api/v1/organizers/(organizer)/checkinrpc/annul/
+
+   If a check-in was made in error and the person was not let in, it can be annulled. We do not recommend this to be used
+   in case of manual check-ins or user interfaces because it is too prone for human errors. It is mostly intended for
+   automated entry systems like a turnstile or automated door, where the check-in is first created, then the door is
+   opened, and then the check-in may be annulled if the system knows that the turnstile did not turn or was out of
+   order.
+
+   This endpoint supports passing multiple check-in lists for the context of a multi-event scan. However, each
+   check-in list passed needs to be from a distinct event.
+
+   Check-ins created by a device can only be annulled by the same device. The datetime of annulment may not be more than
+   15 minutes after the datetime of check-in (value subject to change).
+
+   A status code of 404 is returned if no check-in was found for the given nonce. A status code of 400 is returned when
+   multiple check-ins match the nonce, the input is invalid in another way, the annulment is made from the wrong device,
+   the check-in is already in an annulled or failed state, or the datetime constraint is not valid.
+
+   :<json string nonce: ``nonce`` value of the original check-in.
+   :<json array lists: List of check-in list IDs to search on. No two check-in lists may be from the same event.
+   :<json datetime datetime: Specifies the client-side datetime of the annulment. If not supplied, the current time will be used.
+   :<json string error_explanation: A human-readable description of why the check-in was annulled (optional).
+   :>json string status: ``"ok"``
+
+   **Example request**:
+
+   .. sourcecode:: http
+
+      POST /api/v1/organizers/bigevents/checkinrpc/annul/ HTTP/1.1
+      Host: pretix.eu
+      Accept: application/json, text/javascript
+
+      {
+        "lists": [1],
+        "nonce": "Pvrk50vUzQd0DhdpNRL4I4OcXsvg70uA",
+        "error_explanation": "Turnstile did not turn"
+      }
+
+   **Example successful response**:
+
+   .. sourcecode:: http
+
+      HTTP/1.1 200 OK
+      Vary: Accept
+      Content-Type: application/json
+
+      {
+        "status": "ok",
+      }
+
+   :param organizer: The ``slug`` field of the organizer to fetch
+   :statuscode 200: no error
+   :statuscode 400: Invalid or incomplete request, see above
+   :statuscode 401: Authentication failure
+   :statuscode 403: The requested organizer/event does not exist **or** you have no permission to view this resource.
+   :statuscode 404: The requested nonce does not exist.
+
+
+Check-in history
+----------------
+
+.. rst-class:: rest-resource-table
+
+===================================== ========================== =======================================================
+Field                                 Type                       Description
+===================================== ========================== =======================================================
+id                                    integer                    Internal ID of the check-in
+successful                            boolean                    Whether the check-in was successful
+error_reason                          string                     Category of reason why the check-in was unsuccessful. Currently
+                                                                 ``"canceled"``, ``"invalid"``, ``"unpaid"`` ``"product"``,
+                                                                 ``"rules"``, ``"revoked"``, ``"incomplete"``, ``"already_redeemed"``,
+                                                                 ``"ambiguous"``, ``"error"``, ``"blocked"``, ``"unapproved"``,
+                                                                 ``"invalid_time"``, ``"annulled"`` or ``null``
+error_explanation                     string                     Additional, human-readable reason for the check-in to be unsuccessful (or ``null``)
+position                              integer                    Internal ID of the order position (or ``null`` for unknown scans)
+datetime                              datetime                   Logical time when the check-in happened
+created                               datetime                   Time when the check-in appeared on the server
+list                                  integer                    Internal ID of the check-in list
+auto_checked_in                       boolean                    Whether the check-in was performed by the system automatically
+gate                                  integer                    Internal ID of the gate (or ``null``)
+device                                integer                    Internal ID of the device (or ``null``)
+device_id                             integer                    Organizer-internal ID of the device (or ``null``)
+type                                  string                     Type of check-in, currently ``"entry"`` or ``"exit"``
+===================================== ========================== =======================================================
+
+.. http:get:: /api/v1/organizers/(organizer)/events/(event)/checkins/
+
+   Returns a list of all check-in events within a given event.
+
+   **Example request**:
+
+   .. sourcecode:: http
+
+      GET /api/v1/organizers/bigevents/events/sampleconf/checkins/ HTTP/1.1
+      Host: pretix.eu
+      Accept: application/json, text/javascript
+
+   **Example response**:
+
+   .. sourcecode:: http
+
+      HTTP/1.1 200 OK
+      Vary: Accept
+      Content-Type: application/json
+
+      {
+        "count": 1,
+        "next": null,
+        "previous": null,
+        "results": [
+          {
+            "id": 1,
+            "successful": true,
+            "error_reason": null,
+            "error_explanation": null,
+            "position": 1234,
+            "datetime": "2017-12-25T12:45:23Z",
+            "created": "2017-12-25T12:45:23Z",
+            "list": 2,
+            "auto_checked_in": false,
+            "gate": null,
+            "device": null,
+            "device_id": null,
+            "type": "entry",
+          }
+        ]
+      }
+
+   :query integer page: The page number in case of a multi-page result set, default is 1
+   :query datetime created_since: Only return check-ins that have been created since the given date (inclusive).
+   :query datetime created_before: Only return check-ins that have been created before the given date (exclusive).
+   :query datetime datetime_since: Only return check-ins that have happened since the given date (inclusive).
+   :query datetime datetime_before: Only return check-ins that have happened before the given date (exclusive).
+   :query boolean successful: Only return check-ins that have (not) been successful.
+   :query boolean error_reason: Only return check-ins with a specific error reason.
+   :query integer list: Only return check-ins from a specific list.
+   :query string type: Only return check-ins of a specific type.
+   :query integer gate: Only return check-ins from a specific gate.
+   :query integer device: Only return check-ins from a specific device.
+   :query boolean auto_checked_in: Only return check-ins that are (not) auto-checked in.
+   :query string ordering: Manually set the ordering of results. Valid fields to be used are ``datetime``, ``created``,
+                           and ``id``.
+   :param organizer: The ``slug`` field of the organizer to fetch
+   :param event: The ``slug`` field of the event to fetch
+   :statuscode 200: no error
+   :statuscode 401: Authentication failure
+   :statuscode 403: The requested organizer/event does not exist **or** you have no permission to view this resource.

doc/api/resources/checkinlists.rst

@@ -40,10 +40,6 @@ ignore_in_statistics                  boolean                    If ``true``, ch
 consider_tickets_used                 boolean                    If ``true`` (default), tickets checked in on this list will be considered "used" by other functionality, i.e. when checking if they can still be canceled.
 ===================================== ========================== =======================================================
 
-.. versionchanged:: 4.12
-
-    The ``addon_match`` attribute has been added.
-
 .. versionchanged:: 2023.9
 
     The ``ignore_in_statistics`` and ``consider_tickets_used`` attributes have been added.

doc/api/resources/customers.rst

@@ -34,12 +34,6 @@ password                              string                     Can only be set
                                                                  not be included in any responses.
 ===================================== ========================== =======================================================
 
-.. versionadded:: 4.0
-
-.. versionchanged:: 4.3
-
-   Passwords can now be set through the API during customer creation.
-
 .. versionchanged:: 2024.3
 
    The attribute ``phone`` has been added.

doc/api/resources/discounts.rst

@@ -35,6 +35,10 @@ subevent_mode                            strings                    Determines h
                                                                     ``"same"`` (discount is only applied for groups within
                                                                     the same date), or ``"distinct"`` (discount is only applied
                                                                     for groups with no two same dates).
+subevent_date_from                       datetime                   The first date time of a subevent to which this discount can be applied
+                                                                    (or ``null``). Ignored in non-series events.
+subevent_date_until                      datetime                   The last date time of a subevent to which this discount can be applied
+                                                                    (or ``null``). Ignored in non-series events.
 condition_all_products                   boolean                    If ``true``, the discount condition applies to all items.
 condition_limit_products                 list of integers           If ``condition_all_products`` is not set, this is a list
                                                                     of internal item IDs that the discount condition applies to.
@@ -105,6 +109,8 @@ Endpoints
             "available_from": null,
             "available_until": null,
             "subevent_mode": "mixed",
+            "subevent_date_from": null,
+            "subevent_date_until": null,
             "condition_all_products": true,
             "condition_limit_products": [],
             "condition_apply_to_addons": true,
@@ -163,6 +169,8 @@ Endpoints
         "available_from": null,
         "available_until": null,
         "subevent_mode": "mixed",
+        "subevent_date_from": null,
+        "subevent_date_until": null,
         "condition_all_products": true,
         "condition_limit_products": [],
         "condition_apply_to_addons": true,
@@ -207,6 +215,8 @@ Endpoints
         "available_from": null,
         "available_until": null,
         "subevent_mode": "mixed",
+        "subevent_date_from": null,
+        "subevent_date_until": null,
         "condition_all_products": true,
         "condition_limit_products": [],
         "condition_apply_to_addons": true,
@@ -240,6 +250,8 @@ Endpoints
         "available_from": null,
         "available_until": null,
         "subevent_mode": "mixed",
+        "subevent_date_from": null,
+        "subevent_date_until": null,
         "condition_all_products": true,
         "condition_limit_products": [],
         "condition_apply_to_addons": true,
@@ -302,6 +314,8 @@ Endpoints
         "available_from": null,
         "available_until": null,
         "subevent_mode": "mixed",
+        "subevent_date_from": null,
+        "subevent_date_until": null,
         "condition_all_products": true,
         "condition_limit_products": [],
         "condition_apply_to_addons": true,

doc/api/resources/events.rst

@@ -61,25 +61,6 @@ public_url                            string                     The public, cus
 Endpoints
 ---------
 
-.. versionchanged:: 4.0
-
-    The ``clone_from`` parameter has been added to the event creation endpoint.
-
-.. versionchanged:: 4.1
-
-    The ``with_availability_for`` parameter has been added.
-
-    The ``search`` query parameter has been added to filter events by their slug, name, or location in any language.
-
-.. versionchanged:: 4.17
-
-    The ``public_url`` field has been added.
-
-.. versionchanged:: 5.0
-
-    The ``date_from_before``, ``date_from_after``, ``date_to_before``, and ``date_to_after`` query parameters have been
-    added.
-
 .. http:get:: /api/v1/organizers/(organizer)/events/
 
    Returns a list of all events within a given organizer the authenticated user/token has access to.
@@ -443,9 +424,9 @@ Endpoints
    :param organizer: The ``slug`` field of the organizer of the event to create.
    :param event: The ``slug`` field of the event to copy settings and items from.
    :statuscode 201: no error
-   :statuscode 400: The event could not be created due to invalid submitted data.
+   :statuscode 400: The event could not be updated due to invalid submitted data.
    :statuscode 401: Authentication failure
-   :statuscode 403: The requested organizer does not exist **or** you have no permission to create this resource.
+   :statuscode 403: The requested organizer does not exist **or** you have no permission to update this resource.
 
 
 .. http:patch:: /api/v1/organizers/(organizer)/events/(event)/
@@ -630,10 +611,6 @@ organizer level.
    :statuscode 401: Authentication failure
    :statuscode 403: The requested organizer/event does not exist **or** you have no permission to view this resource.
 
-   .. versionchanged:: 4.18
-
-       The ``readonly`` flag has been added.
-
 .. http:patch:: /api/v1/organizers/(organizer)/events/(event)/settings/
 
    Updates event settings. Note that ``PUT`` is not allowed here, only ``PATCH``.

doc/api/resources/exhibitors.rst

@@ -349,6 +349,45 @@ Endpoints
    :statuscode 401: Authentication failure
    :statuscode 403: The requested organizer or event or exhibitor does not exist **or** you have no permission to view it.
 
+.. http:post:: /api/v1/organizers/(organizer)/events/(event)/exhibitors/(id)/vouchers/bulk_attach/
+
+   Attaches many **existing** vouchers to an exhibitor. You need to send either the ``id`` **or** the ``code`` field of
+   the voucher, but you need to send the same field for all entries.
+
+   **Example request**:
+
+   .. sourcecode:: http
+
+      POST /api/v1/organizers/bigevents/events/sampleconf/exhibitors/1/vouchers/bulk_attach/ HTTP/1.1
+      Host: pretix.eu
+      Accept: application/json, text/javascript
+
+     [
+       {
+         "id": 15,
+         "exhibitor_comment": "Free ticket"
+       },
+       ..
+     ]
+
+   **Example response**:
+
+   .. sourcecode:: http
+
+      HTTP/1.1 200 OK
+      Vary: Accept
+      Content-Type: application/json
+
+      {}
+
+   :param organizer: The ``slug`` field of a valid organizer
+   :param event: The ``slug`` field of the event to use
+   :param id: The ``id`` field of the exhibitor to use
+   :statuscode 200: no error
+   :statuscode 400: Invalid data sent, e.g. voucher does not exist
+   :statuscode 401: Authentication failure
+   :statuscode 403: The requested organizer or event or exhibitor does not exist **or** you have no permission to view it.
+
 .. http:post:: /api/v1/organizers/(organizer)/events/(event)/exhibitors/
 
    Create a new exhibitor.

doc/api/resources/giftcards.rst

@@ -47,11 +47,6 @@ acceptor                              string                     Organizer slug
                                                                  this field was added.)
 ===================================== ========================== =======================================================
 
-.. versionchanged:: 4.20
-
-    The ``owner_ticket`` and ``issuer`` attributes of the gift card and the ``info`` and ``acceptor`` attributes of the
-    gift card transaction resource have been added.
-
 Endpoints
 ---------
 

doc/api/resources/index.rst

@@ -19,12 +19,14 @@ at :ref:`plugin-docs`.
    item_bundles
    item_add-ons
    item_meta_properties
+   item_program_times
    questions
    question_options
    quotas
    seats
    orders
    invoices
+   transactions
    vouchers
    discounts
    checkin
@@ -54,6 +56,7 @@ at :ref:`plugin-docs`.
    digital
    exhibitors
    imported_secrets
+   offlinesales
    shipping
    billing_invoices
    billing_var

doc/api/resources/invoices.rst

@@ -1,3 +1,5 @@
+.. _rest-invoices:
+
 Invoices
 ========
 
@@ -20,10 +22,13 @@ invoice_from_name                     string                     Sender address:
 invoice_from                          string                     Sender address: Address lines
 invoice_from_zipcode                  string                     Sender address: ZIP code
 invoice_from_city                     string                     Sender address: City
+invoice_from_state                    string                     Sender address: State (only used in some countries)
 invoice_from_country                  string                     Sender address: Country code
 invoice_from_tax_id                   string                     Sender address: Local Tax ID
 invoice_from_vat_id                   string                     Sender address: EU VAT ID
 invoice_to                            string                     Full recipient address
+invoice_to_is_business                boolean                    Recipient address: Business vs individual (``null`` for
+                                                                 invoices created before pretix 2025.6).
 invoice_to_company                    string                     Recipient address: Company name
 invoice_to_name                       string                     Recipient address: Person name
 invoice_to_street                     string                     Recipient address: Address lines
@@ -33,6 +38,7 @@ invoice_to_state                      string                     Recipient addre
 invoice_to_country                    string                     Recipient address: Country code
 invoice_to_vat_id                     string                     Recipient address: EU VAT ID
 invoice_to_beneficiary                string                     Invoice beneficiary
+invoice_to_transmission_info          object                     Additional transmission info (see :ref:`rest-transmission-types`)
 custom_field                          string                     Custom invoice address field
 date                                  date                       Invoice date
 refers                                string                     Invoice number of an invoice this invoice refers to
@@ -75,17 +81,12 @@ lines                                 list of objects            The actual invo
                                                                  for all invoice lines
                                                                  created before this field was introduced as well as for
                                                                  all lines not created by a fee (e.g. a product).
-├ event_date_from                     datetime                   Start date of the (sub)event this line was created for as it
-                                                                 was set during invoice creation. Can be ``null`` for all invoice
-                                                                 lines created before this was introduced as well as for lines in
-                                                                 an event series not created by a product (e.g. shipping or
-                                                                 cancellation fees).
-├ event_date_to                       datetime                   End date of the (sub)event this line was created for as it
-                                                                 was set during invoice creation. Can be ``null`` for all invoice
-                                                                 lines created before this was introduced as well as for lines in
-                                                                 an event series not created by a product (e.g. shipping or
-                                                                 cancellation fees) as well as whenever the respective (sub)event
-                                                                 has no end date set.
+├ period_start                        datetime                   Start date of the service or delivery period of the invoice line.
+                                                                 Can be ``null`` if not known.
+├ period_end                          datetime                   End date of the service or delivery period of the invoice line.
+                                                                 Can be ``null`` if not known.
+├ event_date_from                     datetime                   Deprecated alias of ``period_start``.
+├ event_date_to                       datetime                   Deprecated alias of ``period_end``.
 ├ event_location                      string                     Location of the (sub)event this line was created for as it
                                                                  was set during invoice creation. Can be ``null`` for all invoice
                                                                  lines created before this was introduced as well as for lines in
@@ -108,21 +109,15 @@ foreign_currency_rate                 decimal (string)           If ``foreign_cu
 foreign_currency_rate_date            date                       If ``foreign_currency_rate`` is set, this signifies the
                                                                  date at which the currency rate was obtained.
 internal_reference                    string                     Customer's reference to be printed on the invoice.
+transmission_type                     string                     Requested transmission channel (see :ref:`rest-transmission-types`)
+transmission_provider                 string                     Selected transmission provider (depends on installed
+                                                                 plugins). ``null`` if not yet chosen.
+transmission_status                   string                     Transmission status, one of ``unknown`` (pre-2025.6),
+                                                                 ``pending``, ``inflight``, ``failed``, and ``completed``.
+transmission_date                     datetime                   Time of last change in transmission status (may be ``null``).
 ===================================== ========================== =======================================================
 
 
-.. versionchanged:: 4.1
-
-   The attributes ``fee_type`` and ``fee_internal_type`` have been added.
-
-.. versionchanged:: 4.1
-
-   The attribute ``lines.event_location`` has been added.
-
-.. versionchanged:: 4.6
-
-   The attribute ``lines.subevent`` has been added.
-
 .. versionchanged:: 2023.8
 
    The ``event`` attribute has been added. The organizer-level endpoint has been added.
@@ -131,6 +126,76 @@ internal_reference                    string                     Customer's refe
 
    The ``tax_code`` attribute has been added.
 
+.. versionchanged:: 2025.6
+
+   The attributes ``invoice_to_is_business``, ``invoice_to_transmission_info``, ``transmission_type``,
+   ``transmission_provider``, ``transmission_status``, and ``transmission_date`` have been added.
+
+
+.. _`rest-transmission-types`:
+
+Transmission types
+------------------
+
+pretix supports multiple ways to transmit an invoice from the organizer to the invoice recipient.
+For each transmission type, different fields are supported in the ``transmission_info`` object of the
+invoice address. Currently, pretix supports the following transmission types:
+
+Email
+"""""
+
+The identifier ``"email"`` represents the transmission of PDF invoices through email.
+This is the default transmission type in pretix and has some special behavior for backwards compatibility.
+Transmission is always executed through the provider ``"email_pdf"``.
+The ``transmission_info`` object may contain the following properties:
+
+.. rst-class:: rest-resource-table
+
+===================================== ========================== =======================================================
+Field                                 Type                       Description
+===================================== ========================== =======================================================
+transmission_email_address            string                     Optional. An email address other than the order address
+                                                                 that the invoice should be sent to.
+                                                                 Business customers only.
+===================================== ========================== =======================================================
+
+Peppol
+""""""
+
+The identifier ``"peppol"`` represents the transmission of XML invoices through the `Peppol`_ network.
+This is only available for business addresses.
+This is not supported by pretix out of the box and requires the use of a suitable plugin.
+The ``transmission_info`` object may contain the following properties:
+
+.. rst-class:: rest-resource-table
+
+===================================== ========================== =======================================================
+Field                                 Type                       Description
+===================================== ========================== =======================================================
+transmission_peppol_participant_id    string                     Required. The Peppol participant ID of the recipient.
+===================================== ========================== =======================================================
+
+Italian Exchange System
+"""""""""""""""""""""""
+
+The identifier ``"it_sdi"`` represents the transmission of XML invoices through the `Sistema di Interscambio`_ network used in Italy.
+This is only available for addresses with country ``"IT"``.
+This is not supported by pretix out of the box and requires the use of a suitable plugin.
+The ``transmission_info`` object may contain the following properties:
+
+.. rst-class:: rest-resource-table
+
+===================================== ========================== =======================================================
+Field                                 Type                       Description
+===================================== ========================== =======================================================
+transmission_it_sdi_codice_fiscale    string                     Required for non-business address. Fiscal code of the
+                                                                 recipient.
+transmission_it_sdi_pec               string                     Required for business addresses. Address for certified
+                                                                 electronic mail.
+transmission_it_sdi_recipient_code    string                     Required for businesses. SdI recipient code.
+===================================== ========================== =======================================================
+
+If this type is selected, ``vat_id`` is required for business addresses.
 
 List of all invoices
 --------------------
@@ -169,11 +234,13 @@ List of all invoices
             "invoice_from": "Demo street 12",
             "invoice_from_zipcode":"",
             "invoice_from_city":"Demo town",
+            "invoice_from_state":"CA",
             "invoice_from_country":"US",
             "invoice_from_tax_id":"",
             "invoice_from_vat_id":"",
             "invoice_to": "Sample company\nJohn Doe\nTest street 12\n12345 Testington\nTestikistan\nVAT-ID: EU123456789",
             "invoice_to_company": "Sample company",
+            "invoice_to_is_business": true,
             "invoice_to_name": "John Doe",
             "invoice_to_street": "Test street 12",
             "invoice_to_zipcode": "12345",
@@ -182,6 +249,7 @@ List of all invoices
             "invoice_to_country": "TE",
             "invoice_to_vat_id": "EU123456789",
             "invoice_to_beneficiary": "",
+            "invoice_to_transmission_info": {},
             "custom_field": null,
             "date": "2017-12-01",
             "refers": null,
@@ -203,6 +271,8 @@ List of all invoices
                 "fee_internal_type": null,
                 "event_date_from": "2017-12-27T10:00:00Z",
                 "event_date_to": null,
+                "period_start": "2017-12-27T10:00:00Z",
+                "period_end": "2017-12-27T10:00:00Z",
                 "event_location": "Heidelberg",
                 "attendee_name": null,
                 "gross_value": "23.00",
@@ -214,7 +284,11 @@ List of all invoices
             ],
             "foreign_currency_display": "PLN",
             "foreign_currency_rate": "4.2408",
-            "foreign_currency_rate_date": "2017-07-24"
+            "foreign_currency_rate_date": "2017-07-24",
+            "transmission_type": "email",
+            "transmission_provider": "email_pdf",
+            "transmission_status": "completed",
+            "transmission_date": "2017-07-24T10:00:00Z"
           }
         ]
       }
@@ -309,11 +383,13 @@ Fetching individual invoices
         "invoice_from": "Demo street 12",
         "invoice_from_zipcode":"",
         "invoice_from_city":"Demo town",
+        "invoice_from_state":"CA",
         "invoice_from_country":"US",
         "invoice_from_tax_id":"",
         "invoice_from_vat_id":"",
         "invoice_to": "Sample company\nJohn Doe\nTest street 12\n12345 Testington\nTestikistan\nVAT-ID: EU123456789",
         "invoice_to_company": "Sample company",
+        "invoice_to_is_business": true,
         "invoice_to_name": "John Doe",
         "invoice_to_street": "Test street 12",
         "invoice_to_zipcode": "12345",
@@ -322,6 +398,7 @@ Fetching individual invoices
         "invoice_to_country": "TE",
         "invoice_to_vat_id": "EU123456789",
         "invoice_to_beneficiary": "",
+        "invoice_to_transmission_info": {},
         "custom_field": null,
         "date": "2017-12-01",
         "refers": null,
@@ -343,6 +420,8 @@ Fetching individual invoices
             "fee_internal_type": null,
             "event_date_from": "2017-12-27T10:00:00Z",
             "event_date_to": null,
+            "period_start": "2017-12-27T10:00:00Z",
+            "period_end": "2017-12-27T10:00:00Z",
             "event_location": "Heidelberg",
             "attendee_name": null,
             "gross_value": "23.00",
@@ -354,7 +433,11 @@ Fetching individual invoices
         ],
         "foreign_currency_display": "PLN",
         "foreign_currency_rate": "4.2408",
-        "foreign_currency_rate_date": "2017-07-24"
+        "foreign_currency_rate_date": "2017-07-24",
+        "transmission_type": "email",
+        "transmission_provider": "email_pdf",
+        "transmission_status": "completed",
+        "transmission_date": "2017-07-24T10:00:00Z"
       }
 
    :param organizer: The ``slug`` field of the organizer to fetch
@@ -459,3 +542,70 @@ Invoices cannot be edited directly, but the following actions can be triggered:
    :statuscode 400: The invoice has already been canceled
    :statuscode 401: Authentication failure
    :statuscode 403: The requested organizer/event does not exist **or** you have no permission to change this resource.
+
+
+Transmitting invoices
+---------------------
+
+Invoices are transmitted automatically when created during order creation or payment receipt,
+but in other cases transmission may need to be triggered manually.
+
+.. http:post:: /api/v1/organizers/(organizer)/events/(event)/invoices/(number)/transmit/
+
+   Transmits the invoice to the recipient, but only if it is in ``pending`` state.
+
+   **Example request**:
+
+   .. sourcecode:: http
+
+      GET /api/v1/organizers/bigevents/events/sampleconf/invoices/00001/transmit/ HTTP/1.1
+      Host: pretix.eu
+      Accept: application/json, text/javascript
+
+   **Example response**:
+
+   .. sourcecode:: http
+
+      HTTP/1.1 204 No Content
+      Vary: Accept
+      Content-Type: application/pdf
+
+   :param organizer: The ``slug`` field of the organizer to fetch
+   :param event: The ``slug`` field of the event to fetch
+   :param number: The ``number`` field of the invoice to transmit
+   :statuscode 200: no error
+   :statuscode 401: Authentication failure
+   :statuscode 403: The requested organizer/event does not exist **or** you have no permission to transmit this invoice **or** the invoice may not be transmitted
+   :statuscode 409: The invoice is currently in transmission
+
+.. http:post:: /api/v1/organizers/(organizer)/events/(event)/invoices/(number)/retransmit/
+
+   Transmits the invoice to the recipient even if transmission was already attempted previously.
+
+   **Example request**:
+
+   .. sourcecode:: http
+
+      GET /api/v1/organizers/bigevents/events/sampleconf/invoices/00001/retransmit/ HTTP/1.1
+      Host: pretix.eu
+      Accept: application/json, text/javascript
+
+   **Example response**:
+
+   .. sourcecode:: http
+
+      HTTP/1.1 204 No Content
+      Vary: Accept
+      Content-Type: application/pdf
+
+   :param organizer: The ``slug`` field of the organizer to fetch
+   :param event: The ``slug`` field of the event to fetch
+   :param number: The ``number`` field of the invoice to transmit
+   :statuscode 200: no error
+   :statuscode 401: Authentication failure
+   :statuscode 403: The requested organizer/event does not exist **or** you have no permission to transmit this invoice **or** the invoice may not be transmitted
+   :statuscode 409: The invoice is currently in transmission
+
+
+.. _Peppol: https://en.wikipedia.org/wiki/PEPPOL
+.. _Sistema di Interscambio: https://it.wikipedia.org/wiki/Fattura_elettronica_in_Italia

doc/api/resources/item_program_times.rst

@@ -0,0 +1,223 @@
+Item program times
+==================
+
+Resource description
+--------------------
+
+Program times for products (items) that can be set in addition to event times, e.g. to display seperate schedules within an event.
+Note that ``program_times`` are not available for items inside event series.
+The program times resource contains the following public fields:
+
+.. rst-class:: rest-resource-table
+
+===================================== ========================== =======================================================
+Field                                 Type                       Description
+===================================== ========================== =======================================================
+id                                    integer                    Internal ID of the program time
+start                                 datetime                   The start date time for this program time slot.
+end                                   datetime                   The end date time for this program time slot.
+===================================== ========================== =======================================================
+
+.. versionchanged:: TODO
+
+   The resource has been added.
+
+
+Endpoints
+---------
+
+.. http:get:: /api/v1/organizers/(organizer)/events/(event)/items/(item)/program_times/
+
+   Returns a list of all program times for a given item.
+
+   **Example request**:
+
+   .. sourcecode:: http
+
+      GET /api/v1/organizers/bigevents/events/sampleconf/items/11/program_times/ HTTP/1.1
+      Host: pretix.eu
+      Accept: application/json, text/javascript
+
+   **Example response**:
+
+   .. sourcecode:: http
+
+      HTTP/1.1 200 OK
+      Vary: Accept
+      Content-Type: application/json
+
+   {
+      "count": 3,
+      "next": null,
+      "previous": null,
+      "results": [
+         {
+            "id": 2,
+            "start": "2025-08-14T22:00:00Z",
+            "end": "2025-08-15T00:00:00Z"
+         },
+         {
+            "id": 3,
+            "start": "2025-08-12T22:00:00Z",
+            "end": "2025-08-13T22:00:00Z"
+         },
+         {
+            "id": 14,
+            "start": "2025-08-15T22:00:00Z",
+            "end": "2025-08-17T22:00:00Z"
+         }
+      ]
+   }
+
+   :param organizer: The ``slug`` field of the organizer to fetch
+   :param event: The ``slug`` field of the event to fetch
+   :param item: The ``id`` field of the item to fetch
+   :statuscode 200: no error
+   :statuscode 401: Authentication failure
+   :statuscode 403: The requested organizer/event/item does not exist **or** you have no permission to view this resource.
+
+.. http:get:: /api/v1/organizers/(organizer)/events/(event)/items/(item)/program_times/(id)/
+
+   Returns information on one program time, identified by its ID.
+
+   **Example request**:
+
+   .. sourcecode:: http
+
+      GET /api/v1/organizers/bigevents/events/sampleconf/items/1/program_times/1/ HTTP/1.1
+      Host: pretix.eu
+      Accept: application/json, text/javascript
+
+   **Example response**:
+
+   .. sourcecode:: http
+
+      HTTP/1.1 200 OK
+      Vary: Accept
+      Content-Type: application/json
+
+      {
+         "id": 1,
+         "start": "2025-08-15T22:00:00Z",
+         "end": "2025-10-27T23:00:00Z"
+      }
+
+   :param organizer: The ``slug`` field of the organizer to fetch
+   :param event: The ``slug`` field of the event to fetch
+   :param item: The ``id`` field of the item to fetch
+   :param id: The ``id`` field of the program time to fetch
+   :statuscode 200: no error
+   :statuscode 401: Authentication failure
+   :statuscode 403: The requested organizer/event does not exist **or** you have no permission to view this resource.
+
+.. http:post:: /api/v1/organizers/(organizer)/events/(event)/items/(item)/program_times/
+
+   Creates a new program time
+
+   **Example request**:
+
+   .. sourcecode:: http
+
+      POST /api/v1/organizers/bigevents/events/sampleconf/items/1/program_times/ HTTP/1.1
+      Host: pretix.eu
+      Accept: application/json, text/javascript
+      Content-Type: application/json
+
+      {
+        "start": "2025-08-15T10:00:00Z",
+        "end": "2025-08-15T22:00:00Z"
+      }
+
+   **Example response**:
+
+   .. sourcecode:: http
+
+      HTTP/1.1 201 Created
+      Vary: Accept
+      Content-Type: application/json
+
+      {
+        "id": 17,
+        "start": "2025-08-15T10:00:00Z",
+        "end": "2025-08-15T22:00:00Z"
+      }
+
+   :param organizer: The ``slug`` field of the organizer of the event/item to create a program time for
+   :param event: The ``slug`` field of the event to create a program time for
+   :param item: The ``id`` field of the item to create a program time for
+   :statuscode 201: no error
+   :statuscode 400: The program time could not be created due to invalid submitted data.
+   :statuscode 401: Authentication failure
+   :statuscode 403: The requested organizer/event does not exist **or** you have no permission to create this resource.
+
+.. http:patch:: /api/v1/organizers/(organizer)/events/(event)/items/(item)/program_times/(id)/
+
+   Update a program time. You can also use ``PUT`` instead of ``PATCH``. With ``PUT``, you have to provide all fields of
+   the resource, other fields will be reset to default. With ``PATCH``, you only need to provide the fields that you
+   want to change.
+
+   You can change all fields of the resource except the ``id`` field.
+
+   **Example request**:
+
+   .. sourcecode:: http
+
+      PATCH /api/v1/organizers/bigevents/events/sampleconf/items/1/program_times/1/ HTTP/1.1
+      Host: pretix.eu
+      Accept: application/json, text/javascript
+      Content-Type: application/json
+      Content-Length: 94
+
+      {
+        "start": "2025-08-14T10:00:00Z"
+      }
+
+   **Example response**:
+
+   .. sourcecode:: http
+
+      HTTP/1.1 200 OK
+      Vary: Accept
+      Content-Type: application/json
+
+      {
+        "id": 1,
+        "start": "2025-08-14T10:00:00Z",
+        "end": "2025-08-15T12:00:00Z"
+      }
+
+   :param organizer: The ``slug`` field of the organizer to modify
+   :param event: The ``slug`` field of the event to modify
+   :param id: The ``id`` field of the item to modify
+   :param id: The ``id`` field of the program time to modify
+   :statuscode 200: no error
+   :statuscode 400: The program time could not be modified due to invalid submitted data
+   :statuscode 401: Authentication failure
+   :statuscode 403: The requested organizer/event does not exist **or** you have no permission to change this resource.
+
+.. http:delete:: /api/v1/organizers/(organizer)/events/(event)/items/(id)/program_times/(id)/
+
+   Delete a program time.
+
+   **Example request**:
+
+   .. sourcecode:: http
+
+      DELETE /api/v1/organizers/bigevents/events/sampleconf/items/1/program_times/1/ HTTP/1.1
+      Host: pretix.eu
+      Accept: application/json, text/javascript
+
+   **Example response**:
+
+   .. sourcecode:: http
+
+      HTTP/1.1 204 No Content
+      Vary: Accept
+
+   :param organizer: The ``slug`` field of the organizer to modify
+   :param event: The ``slug`` field of the event to modify
+   :param id: The ``id`` field of the item to modify
+   :param id: The ``id`` field of the program time to delete
+   :statuscode 204: no error
+   :statuscode 401: Authentication failure
+   :statuscode 403: The requested organizer/event does not exist **or** you have no permission to delete this resource.

doc/api/resources/item_variations.rst

@@ -64,10 +64,6 @@ hide_without_voucher                  boolean                    If ``true``, th
 meta_data                             object                     Values set for event-specific meta data parameters.
 ===================================== ========================== =======================================================
 
-.. versionchanged:: 4.16
-
-   The ``meta_data`` and ``checkin_attention`` attributes have been added.
-
 .. versionchanged:: 2023.10
 
    The ``free_price_suggestion`` attribute has been added.

doc/api/resources/items.rst

@@ -139,6 +139,10 @@ has_variations                          boolean                    Shows whether
 variations                              list of objects            A list with one object for each variation of this item.
                                                                    Can be empty. Only writable during creation,
                                                                    use separate endpoint to modify this later.
+program_times                           list of objects            A list with one object for each program time of this item.
+                                                                   Can be empty. Only writable during creation,
+                                                                   use separate endpoint to modify this later.
+                                                                   Not available for items in event series.
 ├ id                                    integer                    Internal ID of the variation
 ├ value                                 multi-lingual string       The "name" of the variation
 ├ default_price                         money (string)             The price set directly for this variation or ``null``
@@ -211,28 +215,6 @@ bundles                                 list of objects            Definition of
 meta_data                               object                     Values set for event-specific meta data parameters.
 ======================================= ========================== =======================================================
 
-.. versionchanged:: 4.0
-
-   The attributes ``require_membership``, ``require_membership_types``, ``grant_membership_type``, ``grant_membership_duration_like_event``,
-    ``grant_membership_duration_days`` and ``grant_membership_duration_months`` have been added.
-
-.. versionchanged:: 4.4
-
-   The attributes ``require_membership_hidden`` attribute has been added.
-
-.. versionchanged:: 4.16
-
-   The ``variations[x].meta_data`` and ``variations[x].checkin_attention`` attributes have been added.
-   The ``personalized`` attribute has been added.
-
-.. versionchanged:: 4.17
-
-   The ``validity_*`` attributes have been added.
-
-.. versionchanged:: 4.18
-
-   The ``media_policy`` and ``media_type`` attributes have been added.
-
 .. versionchanged:: 2023.10
 
    The ``checkin_text`` and ``variations[x].checkin_text`` attributes have been added.
@@ -247,6 +229,10 @@ meta_data                               object                     Values set fo
 
    The ``hidden_if_item_available_mode`` attributes has been added.
 
+.. versionchanged:: 2025.9
+
+   The ``program_times`` attribute has been added.
+
 Notes
 -----
 
@@ -254,9 +240,11 @@ Please note that an item either always has variations or never has. Once created
 change to an item without and vice versa. To create an item with variations ensure that you POST an item with at least
 one variation.
 
-Also note that ``variations``, ``bundles``, and  ``addons`` are only supported on ``POST``. To update/delete variations,
-bundles, and add-ons please use the dedicated nested endpoints. By design this endpoint does not support ``PATCH`` and ``PUT``
-with nested ``variations``, ``bundles`` and/or ``addons``.
+Also note that ``variations``, ``bundles``, ``addons`` and  ``program_times`` are only supported on ``POST``. To update/delete variations,
+bundles, add-ons and program times please use the dedicated nested endpoints. By design this endpoint does not support ``PATCH`` and ``PUT``
+with nested ``variations``, ``bundles``, ``addons`` and/or ``program_times``.
+
+``program_times`` is not available to items in event series.
 
 Endpoints
 ---------
@@ -395,7 +383,8 @@ Endpoints
               }
             ],
             "addons": [],
-            "bundles": []
+            "bundles": [],
+            "program_times": []
           }
         ]
       }
@@ -547,7 +536,8 @@ Endpoints
           }
         ],
         "addons": [],
-        "bundles": []
+        "bundles": [],
+        "program_times": []
       }
 
    :param organizer: The ``slug`` field of the organizer to fetch
@@ -675,7 +665,13 @@ Endpoints
           }
         ],
         "addons": [],
-        "bundles": []
+        "bundles": [],
+        "program_times": [
+          {
+            "start": "2025-08-14T22:00:00Z",
+            "end": "2025-08-15T00:00:00Z"
+          }
+        ]
       }
 
    **Example response**:
@@ -795,7 +791,13 @@ Endpoints
           }
         ],
         "addons": [],
-        "bundles": []
+        "bundles": [],
+        "program_times": [
+          {
+            "start": "2025-08-14T22:00:00Z",
+            "end": "2025-08-15T00:00:00Z"
+          }
+        ]
       }
 
    :param organizer: The ``slug`` field of the organizer of the event to create an item for
@@ -811,8 +813,9 @@ Endpoints
    the resource, other fields will be reset to default. With ``PATCH``, you only need to provide the fields that you
    want to change.
 
-   You can change all fields of the resource except the ``has_variations``, ``variations`` and the ``addon`` field. If
-   you need to update/delete variations or add-ons please use the nested dedicated endpoints.
+   You can change all fields of the resource except the ``has_variations``, ``variations``, ``addon`` and the
+   ``program_times`` field. If you need to update/delete variations, add-ons or program times, please use the nested
+   dedicated endpoints.
 
    **Example request**:
 
@@ -946,7 +949,8 @@ Endpoints
           }
         ],
         "addons": [],
-        "bundles": []
+        "bundles": [],
+        "program_times": []
       }
 
    :param organizer: The ``slug`` field of the organizer to modify

doc/api/resources/offlinesales.rst

@@ -0,0 +1,219 @@
+Offline sales
+=============
+
+.. note:: This API is only available when the plugin **pretix-offlinesales** is installed (pretix Hosted and Enterprise only).
+
+The offline sales module allows you to create batches of tickets intended for the sale outside the system.
+
+Resource description
+--------------------
+
+The offline sales batch resource contains the following public fields:
+
+.. rst-class:: rest-resource-table
+
+===================================== ========================== =======================================================
+Field                                 Type                       Description
+===================================== ========================== =======================================================
+id                                    integer                    Internal batch ID
+creation                              datetime                   Time of creation
+testmode                              boolean                    ``true`` if orders are created in test mode
+sales_channel                         string                     Sales channel of the orders
+layout                                integer                    Internal ID of the chosen ticket layout
+subevent                              integer                    Internal ID of the chosen subevent (or ``null``)
+item                                  integer                    Internal ID of the chosen product
+variation                             integer                    Internal ID of the chosen variation (or ``null``)
+amount                                integer                    Number of tickets in the batch
+comment                               string                     Internal comment
+orders                                list of strings            List of order codes (omitted in list view for performance reasons)
+===================================== ========================== =======================================================
+
+Endpoints
+---------
+
+.. http:get:: /api/v1/organizers/(organizer)/events/(event)/offlinesalesbatches/
+
+   Returns a list of all offline sales batches
+
+   **Example request**:
+
+   .. sourcecode:: http
+
+      GET /api/v1/organizers/bigevents/events/democon/offlinesalesbatches/ HTTP/1.1
+      Host: pretix.eu
+      Accept: application/json, text/javascript
+
+   **Example response**:
+
+   .. sourcecode:: http
+
+      HTTP/1.1 200 OK
+      Vary: Accept
+      Content-Type: text/javascript
+
+      {
+        "count": 1,
+        "next": null,
+        "previous": null,
+        "results": [
+          {
+            "id": 1,
+            "creation": "2025-07-08T18:27:32.134368+02:00",
+            "testmode": False,
+            "sales_channel": "web",
+            "comment": "Batch for sale at the event",
+            "layout": 3,
+            "subevent": null,
+            "item": 23,
+            "variation": null,
+            "amount": 7
+          }
+        ]
+      }
+
+   :query page: The page number in case of a multi-page result set, default is 1
+   :param organizer: The ``slug`` field of a valid organizer
+   :param event: The ``slug`` field of a valid event
+   :statuscode 200: no error
+   :statuscode 401: Authentication failure
+   :statuscode 403: The requested organizer does not exist **or** you have no permission to view it.
+
+.. http:get:: /api/v1/organizers/(organizer)/events/(event)/offlinesalesbatches/(id)/
+
+   Returns information on a given batch.
+
+   **Example request**:
+
+   .. sourcecode:: http
+
+      GET /api/v1/organizers/bigevents/events/democon/offlinesalesbatches/1/ HTTP/1.1
+      Host: pretix.eu
+      Accept: application/json, text/javascript
+
+   **Example response**:
+
+   .. sourcecode:: http
+
+      HTTP/1.1 200 OK
+      Vary: Accept
+      Content-Type: text/javascript
+
+      {
+        "id": 1,
+        "creation": "2025-07-08T18:27:32.134368+02:00",
+        "testmode": False,
+        "sales_channel": "web",
+        "comment": "Batch for sale at the event",
+        "layout": 3,
+        "subevent": null,
+        "item": 23,
+        "variation": null,
+        "amount": 7,
+        "orders": ["TSRNN", "3FBSL", "WMDNJ", "BHW9H", "MXSUG", "DSDAP", "URLLE"]
+      }
+
+   :param organizer: The ``slug`` field of the organizer to fetch
+   :param event: The ``slug`` field of the event to fetch
+   :param id: The ``id`` field of the batch to fetch
+   :statuscode 200: no error
+   :statuscode 401: Authentication failure
+   :statuscode 403: The requested organizer/event does not exist **or** you have no permission to view it.
+
+
+.. http:post:: /api/v1/organizers/(organizer)/events/(event)/offlinesalesbatches/
+
+   With this API call, you can instruct the system to create a new batch.
+
+   Since batches can contain up to 10,000 tickets, they are created asynchronously on the server.
+   If your input parameters validate correctly, a ``202 Accepted`` status code is returned.
+   The body points you to the check URL of the result. Running a ``GET`` request on that result URL will
+   yield one of the following status codes:
+
+    * ``200 OK`` – The creation of the batch has succeeded. The body will be your resulting batch with the same information as in the detail endpoint above.
+    * ``409 Conflict`` – Your creation job is still running. The body will be JSON with the structure ``{"status": "running"}``. ``status`` can be ``waiting`` before the task is actually being processed. Please retry, but wait at least one second before you do.
+    * ``410 Gone`` – Creating the batch has failed permanently (e.g. quota no longer available). The body will be JSON with the structure ``{"status": "failed", "message": "Error message"}``
+    * ``404 Not Found`` – The job does not exist / is expired.
+
+   .. note:: To avoid performance issues, a maximum amount of 10000 is currently allowed.
+
+   .. note:: Do not wait multiple hours or more to retrieve your result. After a longer wait time, ``409`` might be returned permanently due to technical constraints, even though nothing will happen any more.
+
+   **Example request**:
+
+   .. sourcecode:: http
+
+      POST /api/v1/organizers/bigevents/events/sampleconf/offlinesalesbatches/ HTTP/1.1
+      Host: pretix.eu
+      Accept: application/json, text/javascript
+      Content-Type: application/json
+
+      {
+        "testmode": True,
+        "layout": 123,
+        "item": 14,
+        "sales_channel": "web",
+        "amount": 10,
+      }
+
+   **Example response**:
+
+   .. sourcecode:: http
+
+      HTTP/1.1 200 OK
+      Vary: Accept
+      Content-Type: application/json
+
+      {
+        "check": "https://pretix.eu/api/v1/organizers/bigevents/events/sampleconf/offlinesalesbatches/check/29891ede-196f-4942-9e26-d055a36e98b8/"
+      }
+
+   :param organizer: The ``slug`` field of the organizer to fetch
+   :param event: The ``slug`` field of the event to fetch
+   :statuscode 202: no error
+   :statuscode 400: Invalid input options
+   :statuscode 401: Authentication failure
+   :statuscode 403: The requested organizer/event does not exist **or** you have no permission to view this resource.
+
+
+.. http:post:: /api/v1/organizers/(organizer)/events/(event)/offlinesalesbatches/(id)/render/
+
+   With this API call, you can render the PDF representation of a batch.
+
+   Since batches can contain up to 10,000 tickets, they are rendered asynchronously on the server.
+   If your input parameters validate correctly, a ``202 Accepted`` status code is returned.
+   The body points you to the download URL of the result. Running a ``GET`` request on that result URL will
+   yield one of the following status codes:
+
+    * ``200 OK`` – The creation of the batch has succeeded. The body will be your resulting batch with the same information as in the detail endpoint above.
+    * ``409 Conflict`` – Your rendering process is still running. The body will be JSON with the structure ``{"status": "running"}``. ``status`` can be ``waiting`` before the task is actually being processed. Please retry, but wait at least one second before you do.
+    * ``410 Gone`` – Rendering the batch has failed permanently. The body will be JSON with the structure ``{"status": "failed", "message": "Error message"}``
+    * ``404 Not Found`` – The rendering job does not exist / is expired.
+
+   **Example request**:
+
+   .. sourcecode:: http
+
+      POST /api/v1/organizers/bigevents/events/sampleconf/offlinesalesbatches/1/render HTTP/1.1
+      Host: pretix.eu
+      Accept: application/json, text/javascript
+
+   **Example response**:
+
+   .. sourcecode:: http
+
+      HTTP/1.1 200 OK
+      Vary: Accept
+      Content-Type: application/json
+
+      {
+        "download": "https://pretix.eu/api/v1/organizers/bigevents/events/sampleconf/offlinesalesbatches/1/download/29891ede-196f-4942-9e26-d055a36e98b8/3f279f13-c198-4137-b49b-9b360ce9fcce/"
+      }
+
+   :param organizer: The ``slug`` field of the organizer to fetch
+   :param event: The ``slug`` field of the event to fetch
+   :param id: The ``id`` field of the batch to fetch
+   :statuscode 202: no error
+   :statuscode 400: Invalid input options
+   :statuscode 401: Authentication failure
+   :statuscode 403: The requested organizer/event does not exist **or** you have no permission to view this resource.
+

doc/api/resources/orders.rst

@@ -41,6 +41,7 @@ expires                               datetime                   The order will
 payment_date                          date                       **DEPRECATED AND INACCURATE** Date of payment receipt
 payment_provider                      string                     **DEPRECATED AND INACCURATE** Payment provider used for this order
 total                                 money (string)             Total value of this order
+tax_rounding_mode                     string                     Tax rounding mode, see :ref:`algorithms-rounding`
 comment                               string                     Internal comment on this order
 api_meta                              object                     Meta data for that order. Only available through API, no guarantees
                                                                  on the content structure. You can use this to save references to your system.
@@ -65,11 +66,16 @@ invoice_address                       object                     Invoice address
 ├ state                               string                     Customer state (ISO 3166-2 code). Only supported in
                                                                  AU, BR, CA, CN, MY, MX, and US.
 ├ internal_reference                  string                     Customer's internal reference to be printed on the invoice
+
 ├ custom_field                        string                     Custom invoice address field
 ├ vat_id                              string                     Customer VAT ID
-└ vat_id_validated                    string                     ``true``, if the VAT ID has been validated against the
+├ vat_id_validated                    string                     ``true``, if the VAT ID has been validated against the
                                                                  EU VAT service and validation was successful. This only
                                                                  happens in rare cases.
+├ transmission_type                   string                     Transmission channel for invoice (see also :ref:`rest-transmission-types`).
+                                                                 Defaults to ``email``.
+└ transmission_info                   object                     Transmission-channel specific information (or ``null``).
+                                                                 See also :ref:`rest-transmission-types`.
 positions                             list of objects            List of order positions (see below). By default, only
                                                                  non-canceled positions are included.
 fees                                  list of objects            List of fees included in the order total. By default, only
@@ -114,34 +120,6 @@ plugin_data                           object                     Additional data
 ===================================== ========================== =======================================================
 
 
-.. versionchanged:: 4.0
-
-   The ``customer`` attribute has been added.
-
-.. versionchanged:: 4.1
-
-   The ``custom_followup_at`` attribute has been added.
-
-.. versionchanged:: 4.4
-
-   The ``item`` and ``variation`` query parameters have been added.
-
-.. versionchanged:: 4.6
-
-   The ``subevent`` query parameters has been added.
-
-.. versionchanged:: 4.8
-
-   The ``order.fees.id`` attribute has been added.
-
-.. versionchanged:: 4.15
-
-   The ``include`` query parameter has been added.
-
-.. versionchanged:: 4.16
-
-   The ``valid_if_pending`` attribute has been added.
-
 .. versionchanged:: 2023.8
 
    The ``event`` attribute has been added. The organizer-level endpoint has been added.
@@ -170,6 +148,14 @@ plugin_data                           object                     Additional data
 
    The ``plugin_data`` attribute has been added.
 
+.. versionchanged:: 2025.6
+
+   The ``invoice_address.transmission_type`` and ``invoice_address.transmission_info`` attributes have been added.
+
+.. versionchanged:: 2025.10
+
+   The ``tax_rounding_mode`` attribute has been added.
+
 .. _order-position-resource:
 
 Order position resource
@@ -260,10 +246,6 @@ pdf_data                              object                     Data object req
 plugin_data                           object                     Additional data added by plugins.
 ===================================== ========================== =======================================================
 
-.. versionchanged:: 4.16
-
-   The attributes ``blocked``, ``valid_from`` and ``valid_until`` have been added.
-
 .. versionchanged:: 2024.9
 
    The attribute ``print_logs`` has been added.
@@ -381,6 +363,7 @@ List of all orders
             "payment_provider": "banktransfer",
             "fees": [],
             "total": "23.00",
+            "tax_rounding_mode": "line",
             "comment": "",
             "custom_followup_at": null,
             "checkin_attention": false,
@@ -400,7 +383,9 @@ List of all orders
                 "state": "",
                 "internal_reference": "",
                 "vat_id": "EU123456789",
-                "vat_id_validated": false
+                "vat_id_validated": false,
+                "transmission_type": "email",
+                "transmission_info": {}
             },
             "positions": [
               {
@@ -439,6 +424,7 @@ List of all orders
                 "seat": null,
                 "checkins": [
                   {
+                    "id": 1337,
                     "list": 44,
                     "type": "entry",
                     "gate": null,
@@ -622,6 +608,7 @@ Fetching individual orders
         "payment_provider": "banktransfer",
         "fees": [],
         "total": "23.00",
+        "tax_rounding_mode": "line",
         "comment": "",
         "api_meta": {},
         "custom_followup_at": null,
@@ -642,7 +629,9 @@ Fetching individual orders
             "state": "",
             "internal_reference": "",
             "vat_id": "EU123456789",
-            "vat_id_validated": false
+            "vat_id_validated": false,
+            "transmission_type": "email",
+            "transmission_info": {}
         },
         "positions": [
           {
@@ -681,6 +670,7 @@ Fetching individual orders
             "seat": null,
             "checkins": [
               {
+                "id": 1337,
                 "list": 44,
                 "type": "entry",
                 "gate": null,
@@ -756,10 +746,6 @@ Fetching individual orders
 Order ticket download
 ---------------------
 
-.. versionchanged:: 4.10
-
-   The API now supports ticket downloads for pending orders if allowed by the event settings.
-
 .. http:get:: /api/v1/organizers/(organizer)/events/(event)/orders/(code)/download/(output)/
 
    Download tickets for an order, identified by its order code. Depending on the chosen output, the response might
@@ -1032,6 +1018,7 @@ Creating orders
      provider will not be called to do anything about this (i.e. if you pass a bank account to a debit provider, *no*
      charge will be created), this is just informative in case you *handled the payment already*.
    * ``payment_date`` (optional) – Date and time of the completion of the payment.
+   * ``tax_rounding_mode`` (optional)
    * ``comment`` (optional)
    * ``custom_followup_at`` (optional)
    * ``checkin_attention`` (optional)
@@ -1051,8 +1038,10 @@ Creating orders
       * ``internal_reference``
       * ``vat_id``
       * ``vat_id_validated`` (optional) – If you need support for reverse charge (rarely the case), you need to check
-         yourself if the passed VAT ID is a valid EU VAT ID. In that case, set this to ``true``. Only valid VAT IDs will
-         trigger reverse charge taxation. Don't forget to set ``is_business`` as well!
+        yourself if the passed VAT ID is a valid EU VAT ID. In that case, set this to ``true``. Only valid VAT IDs will
+        trigger reverse charge taxation. Don't forget to set ``is_business`` as well!
+     * ``transmission_type`` (optional, defaults to ``email``)
+     * ``transmission_info`` (optional, see also :ref:`rest-transmission-types`)
 
    * ``positions``
 
@@ -1077,6 +1066,7 @@ Creating orders
       * ``valid_until`` (optional, if both ``valid_from`` and ``valid_until`` are **missing** (not ``null``) the availability will be computed from the given product)
       * ``requested_valid_from`` (optional, can be set **instead** of ``valid_from`` and ``valid_until`` to signal a user choice for the start time that may or may not be respected)
       * ``use_reusable_medium`` (optional, causes the new ticket to take over the given reusable medium, identified by its ID)
+      * ``discount`` (optional, only possible if ``price`` is set; attention: if this is set to not-``null`` on any position, automatic calculation of discounts will not run)
       * ``answers``
 
         * ``question``
@@ -1095,9 +1085,10 @@ Creating orders
         prices. Note that this will not include other fees and is calculated once during order generation and will not
         be respected automatically when the order changes later.)
       * ``_split_taxes_like_products`` (Optional convenience flag. If set to ``true``, your ``tax_rule`` will be ignored
-        and the fee will be taxed like the products in the order. If the products have multiple tax rates, multiple fees
-        will be generated with weights adjusted to the net price of the products. Note that this will be calculated once
-        during order generation and is not respected automatically when the order changes later.)
+        and the fee will be taxed like the products in the order *unless* the total amount of the positions is zero.
+        If the products have multiple tax rates, multiple fees will be generated with weights adjusted to the net price
+        of the products. Note that this will be calculated once during order generation and is not respected automatically
+        when the order changes later.)
 
    * ``force`` (optional). If set to ``true``, quotas will be ignored.
    * ``send_email`` (optional). If set to ``true``, the same emails will be sent as for a regular order, regardless of
@@ -1652,6 +1643,7 @@ List of all order positions
             "blocked": null,
             "checkins": [
               {
+                "id": 1337,
                 "list": 44,
                 "type": "entry",
                 "gate": null,
@@ -1780,6 +1772,7 @@ Fetching individual positions
         "seat": null,
         "checkins": [
           {
+            "id": 1337,
             "list": 44,
             "type": "entry",
             "gate": null,
@@ -1832,10 +1825,6 @@ Fetching individual positions
 Order position ticket download
 ------------------------------
 
-.. versionchanged:: 4.10
-
-   The API now supports ticket downloads for pending orders if allowed by the event settings.
-
 .. http:get:: /api/v1/organizers/(organizer)/events/(event)/orderpositions/(id)/download/(output)/
 
    Download tickets for one order position, identified by its internal ID.
@@ -1888,15 +1877,6 @@ Order position ticket download
 Manipulating individual positions
 ---------------------------------
 
-.. versionchanged:: 4.8
-
-   The ``PATCH`` method now supports changing items, variations, subevents, seats, prices, and tax rules.
-   The ``POST`` endpoint to add individual positions has been added.
-
-.. versionadded:: 4.16
-
-   The endpoints to manage blocks have been added.
-
 .. versionchanged:: 2024.9
 
    The API now supports logging ticket and badge prints.
@@ -1943,9 +1923,14 @@ Manipulating individual positions
 
    * ``valid_until``
 
+   * ``secret``
+
    Changing parameters such as ``item`` or ``price`` will **not** automatically trigger creation of a new invoice,
    you need to take care of that yourself.
 
+   Changing ``secret`` does not cause a new PDF ticket to be sent to the customer, nor does it cause the old secret
+   to be added to the revocation list, even if your ticket generator uses one.
+
    **Example request**:
 
    .. sourcecode:: http
@@ -1969,6 +1954,7 @@ Manipulating individual positions
 
       (Full order position resource, see above.)
 
+   :query boolean check_quotas: Whether to check quotas before committing item changes, default is ``true``
    :param organizer: The ``slug`` field of the organizer of the event
    :param event: The ``slug`` field of the event
    :param id: The ``id`` field of the order position to update
@@ -2048,6 +2034,7 @@ Manipulating individual positions
 
       (Full order position resource, see above.)
 
+   :query boolean check_quotas: Whether to check quotas before creating the new position, default is ``true``
    :param organizer: The ``slug`` field of the organizer of the event
    :param event: The ``slug`` field of the event
 
@@ -2221,10 +2208,6 @@ multiple changes to an order at once within one transaction. This makes it possi
 attendees in an order without running into conflicts. This interface also offers some possibilities not available
 otherwise, such as splitting an order or changing fees.
 
-.. versionchanged:: 4.8
-
-   This endpoint has been added to the system.
-
 .. http:post:: /api/v1/organizers/(organizer)/events/(event)/orders/(code)/change/
 
    Performs a change operation on an order. You can supply the following fields:
@@ -2338,6 +2321,7 @@ otherwise, such as splitting an order or changing fees.
 
       (Full order position resource, see above.)
 
+   :query boolean check_quotas: Whether to check quotas before patching or creating positions, default is ``true``
    :param organizer: The ``slug`` field of the organizer of the event
    :param event: The ``slug`` field of the event
    :param code: The ``code`` field of the order to update
@@ -2533,6 +2517,7 @@ Order payment endpoints
 
       {
         "amount": "23.00",
+        "comment": "Overpayment",
         "mark_canceled": false
       }
 

doc/api/resources/organizers.rst

@@ -19,16 +19,17 @@ name                                  string                     The organizer's
 slug                                  string                     A short form of the name, used e.g. in URLs.
 public_url                            string                     The public, customer-facing URL of the organizer, where
                                                                  the list of all events can be found (read-only).
+plugins                               list                       A list of package names of the enabled plugins for this
+                                                                 organizer. Note that most plugins are enabled on the
+                                                                 event level (or both levels). If you remove a plugin
+                                                                 that is also enabled on some events, it will
+                                                                 automatically be removed from all events as well.
 ===================================== ========================== =======================================================
 
 
 Endpoints
 ---------
 
-.. versionchanged:: 4.17
-
-    The ``public_url`` field has been added.
-
 .. http:get:: /api/v1/organizers/
 
    Returns a list of all organizers the authenticated user/token has access to.
@@ -57,7 +58,10 @@ Endpoints
           {
             "name": "Big Events LLC",
             "slug": "Big Events",
-            "public_url": "https://pretix.eu/bigevents/"
+            "public_url": "https://pretix.eu/bigevents/",
+            "plugins": [
+              "pretix_datev"
+            ]
           }
         ]
       }
@@ -91,7 +95,10 @@ Endpoints
       {
         "name": "Big Events LLC",
         "slug": "Big Events",
-        "public_url": "https://pretix.eu/bigevents/"
+        "public_url": "https://pretix.eu/bigevents/",
+        "plugins": [
+          "pretix_datev"
+        ]
       }
 
    :param organizer: The ``slug`` field of the organizer to fetch
@@ -99,6 +106,50 @@ Endpoints
    :statuscode 401: Authentication failure
    :statuscode 403: The requested organizer does not exist **or** you have no permission to view it.
 
+.. http:patch:: /api/v1/organizers/(organizer)/
+
+   Updates an organizer. Currently only the ``plugins`` field may be updated.
+
+   Permission required: "Can change organizer settings"
+
+   **Example request**:
+
+   .. sourcecode:: http
+
+      PATCH /api/v1/organizers/bigevents/ HTTP/1.1
+      Host: pretix.eu
+      Accept: application/json, text/javascript
+      Content-Type: application/json
+
+      {
+        "plugins": [
+          "pretix_seating"
+        ]
+      }
+
+   **Example response**:
+
+   .. sourcecode:: http
+
+      HTTP/1.1 200 OK
+      Vary: Accept
+      Content-Type: application/json
+
+      {
+        "name": "Big Events LLC",
+        "slug": "Big Events",
+        "public_url": "https://pretix.eu/bigevents/",
+        "plugins": [
+          "pretix_seating"
+        ]
+      }
+
+   :param organizer: The ``slug`` field of the organizer to update
+   :statuscode 200: no error
+   :statuscode 400: The organizer could not be updated due to invalid submitted data.
+   :statuscode 401: Authentication failure
+   :statuscode 403: The requested organizer does not exist **or** you have no permission to update this resource.
+
 Organizer settings
 ------------------
 

doc/api/resources/quotas.rst

@@ -28,6 +28,8 @@ closed                                boolean                    Whether the quo
                                                                  field).
 release_after_exit                    boolean                    Whether the quota regains capacity as soon as some tickets
                                                                  have been scanned at an exit.
+ignore_for_event_availability         boolean                    Whether the quota is ignored when calculating the event's
+                                                                 availability of tickets.
 available                             boolean                    Whether this quota is available. Only returned if ``with_availability=true``
                                                                  is set on the request. Do not rely on this value for critical operations, it may be
                                                                  slightly out of date.
@@ -36,10 +38,9 @@ available_number                      integer                    Number of avail
                                                                  slightly out of date. ``null`` means unlimited.
 ===================================== ========================== =======================================================
 
-.. versionchanged:: 4.1
-
-    The ``with_availability`` query parameter has been added.
+.. versionchanged:: 2025.7
 
+    The attribute ``ignore_for_event_availability`` has been added.
 
 Endpoints
 ---------
@@ -77,7 +78,8 @@ Endpoints
             "variations": [1, 4, 5, 7],
             "subevent": null,
             "close_when_sold_out": false,
-            "closed": false
+            "closed": false,
+            "ignore_for_event_availability": false
           }
         ]
       }
@@ -86,7 +88,8 @@ Endpoints
    :query string ordering: Manually set the ordering of results. Valid fields to be used are ``id`` and ``position``.
                            Default: ``position``
    :query integer subevent: Only return quotas of the sub-event with the given ID.
-   :query integer subevent__in: Only return quotas of sub-events with one the given IDs (comma-separated).
+   :query integer subevent__in: Only return quotas of sub-events with one of the given IDs (comma-separated).
+   :query integer items__in: Only return quotas that include a product with one of the given IDs (comma-separated).
    :query string with_availability: Set to ``true`` to get availability information. Can lead to increased answer times.
    :param organizer: The ``slug`` field of the organizer to fetch
    :param event: The ``slug`` field of the event to fetch
@@ -122,7 +125,8 @@ Endpoints
         "variations": [1, 4, 5, 7],
         "subevent": null,
         "close_when_sold_out": false,
-        "closed": false
+        "closed": false,
+        "ignore_for_event_availability": false
       }
 
    :param organizer: The ``slug`` field of the organizer to fetch
@@ -153,7 +157,8 @@ Endpoints
         "variations": [1, 4, 5, 7],
         "subevent": null,
         "close_when_sold_out": false,
-        "closed": false
+        "closed": false,
+        "ignore_for_event_availability": false
       }
 
    **Example response**:
@@ -172,7 +177,8 @@ Endpoints
         "variations": [1, 4, 5, 7],
         "subevent": null,
         "close_when_sold_out": false,
-        "closed": false
+        "closed": false,
+        "ignore_for_event_availability": false
       }
 
    :param organizer: The ``slug`` field of the organizer of the event/item to create a quota for
@@ -227,7 +233,8 @@ Endpoints
         ],
         "subevent": null,
         "close_when_sold_out": false,
-        "closed": false
+        "closed": false,
+        "ignore_for_event_availability": false
       }
 
    :param organizer: The ``slug`` field of the organizer to modify

doc/api/resources/reusablemedia.rst

@@ -21,12 +21,15 @@ id                                    integer                    Internal ID of
 type                                  string                     Type of medium, e.g. ``"barcode"``, ``"nfc_uid"`` or ``"nfc_mf0aes"``.
 organizer                             string                     Organizer slug of the organizer who "owns" this medium.
 identifier                            string                     Unique identifier of the medium. The format depends on the ``type``.
+secret                                string                     Secret to identify the medium (or ``null``)
+label                                 string                     Label to identify the medium, usually something human readable (or ``null``)
 active                                boolean                    Whether this medium may be used.
 created                               datetime                   Date of creation
 updated                               datetime                   Date of last modification
 expires                               datetime                   Expiry date (or ``null``)
 customer                              string                     Identifier of a customer account this medium belongs to.
-linked_orderposition                  integer                    Internal ID of a ticket this medium is linked to.
+linked_orderpositions                 list of integer            Internal IDs of tickets this medium is linked to.
+linked_orderposition                  integer                    Internal ID of a ticket this medium is linked to. (**deprecated**, do not use, will be removed)
 linked_giftcard                       integer                    Internal ID of a gift card this medium is linked to.
 info                                  object                     Additional data, content depends on the ``type``. Consider
                                                                  this internal to the system and don't use it for your own data.
@@ -39,6 +42,14 @@ Existing media types are:
 - ``nfc_uid``
 - ``nfc_mf0aes``
 
+
+.. versionchanged:: 2025.11
+
+   The ``secret``, ``label``, ``linked_orderpositions`` attributes have been added, the ``linked_orderposition`` attribute has been
+   deprecated. Note: To maintain backwards compatibility ``linked_orderposition`` contains the internal ID of the linked order position
+   if the medium has exactly one order position in ``linked_orderpositions``.
+
+
 Endpoints
 ---------
 
@@ -77,6 +88,7 @@ Endpoints
             "active": True,
             "expires": None,
             "customer": None,
+            "linked_orderpositions": [],
             "linked_orderposition": None,
             "linked_giftcard": None,
             "notes": None,
@@ -92,10 +104,13 @@ Endpoints
    :query string customer: Only show media linked to the given customer.
    :query string created_since: Only show media created since a given date.
    :query string updated_since: Only show media updated since a given date.
+   :query integer linked_orderpositions: Only show media linked to the given tickets. Note: you can pass multiple ticket IDs by passing
+                         ``linked_orderpositions`` multiple times. A medium matching any linked orderposition will be returned.
    :query integer linked_orderposition: Only show media linked to the given ticket.
    :query integer linked_giftcard: Only show media linked to the given gift card.
-   :query string expand: If you pass ``"linked_giftcard"``, ``"linked_giftcard.owner_ticket"``, ``"linked_orderposition"``,
-                         or ``"customer"``, the respective field will be shown as a nested value instead of just an ID.
+   :query string expand: If you pass ``"linked_giftcard"``, ``"linked_giftcard.owner_ticket"``, ``"linked_orderpositions"``,
+                         ``"linked_orderposition"`` (**deprecated**), or ``"customer"``, the respective field will be shown 
+                         as a nested value instead of just an ID.
                          The nested objects are identical to the respective resources, except that order positions
                          will have an attribute of the format ``"order": {"code": "ABCDE", "event": "eventslug"}`` to make
                          matching easier. The parameter can be given multiple times.
@@ -134,6 +149,7 @@ Endpoints
         "active": True,
         "expires": None,
         "customer": None,
+        "linked_orderpositions": [],
         "linked_orderposition": None,
         "linked_giftcard": None,
         "notes": None,
@@ -191,6 +207,7 @@ Endpoints
         "active": True,
         "expires": None,
         "customer": None,
+        "linked_orderpositions": [],
         "linked_orderposition": None,
         "linked_giftcard": None,
         "notes": None,
@@ -198,9 +215,9 @@ Endpoints
       }
 
    :param organizer: The ``slug`` field of the organizer to look up a medium for
-   :query string expand: If you pass ``"linked_giftcard"``, ``"linked_orderposition"``, oder ``"customer"``, the respective
+   :query string expand: If you pass ``"linked_giftcard"``, ``"linked_orderpositions"``, or ``"customer"``, the respective
                          field will be shown as a nested value instead of just an ID. The nested objects are identical to
-                         the respective resources, except that the ``linked_orderposition`` will have an attribute of the
+                         the respective resources, except that the ``linked_orderpositions`` will have an attribute of the
                          format ``"order": {"code": "ABCDE", "event": "eventslug"}`` to make matching easier. The parameter
                          can be given multiple times.
    :statuscode 201: no error
@@ -227,6 +244,7 @@ Endpoints
         "active": True,
         "expires": None,
         "customer": None,
+        "linked_orderpositions": [],
         "linked_orderposition": None,
         "linked_giftcard": None,
         "notes": None,
@@ -251,6 +269,7 @@ Endpoints
         "active": True,
         "expires": None,
         "customer": None,
+        "linked_orderpositions": [],
         "linked_orderposition": None,
         "linked_giftcard": None,
         "notes": None,
@@ -258,7 +277,7 @@ Endpoints
       }
 
    :param organizer: The ``slug`` field of the organizer to create a medium for
-   :query string expand: If you pass ``"linked_giftcard"``, ``"linked_orderposition"``, oder ``"customer"``, the respective
+   :query string expand: If you pass ``"linked_giftcard"``, ``"linked_orderpositions"``, or ``"customer"``, the respective
                          field will be shown as a nested value instead of just an ID. The nested objects are identical to
                          the respective resources, except that the ``linked_orderposition`` will have an attribute of the
                          format ``"order": {"code": "ABCDE", "event": "eventslug"}`` to make matching easier. The parameter
@@ -287,7 +306,7 @@ Endpoints
       Content-Length: 94
 
       {
-        "linked_orderposition": 13
+        "linked_orderpositions": [13, 29]
       }
 
    **Example response**:
@@ -308,7 +327,8 @@ Endpoints
         "active": True,
         "expires": None,
         "customer": None,
-        "linked_orderposition": 13,
+        "linked_orderpositions": [13, 29],
+        "linked_orderposition": None,
         "linked_giftcard": None,
         "notes": None,
         "info": {}
@@ -316,7 +336,7 @@ Endpoints
 
    :param organizer: The ``slug`` field of the organizer to modify
    :param id: The ``id`` field of the medium to modify
-   :query string expand: If you pass ``"linked_giftcard"``, ``"linked_orderposition"``, oder ``"customer"``, the respective
+   :query string expand: If you pass ``"linked_giftcard"``, ``"linked_orderpositions"``, or ``"customer"``, the respective
                          field will be shown as a nested value instead of just an ID. The nested objects are identical to
                          the respective resources, except that the ``linked_orderposition`` will have an attribute of the
                          format ``"order": {"code": "ABCDE", "event": "eventslug"}`` to make matching easier. The parameter

doc/api/resources/shredders.rst

@@ -6,10 +6,6 @@ Data shredders
 pretix and it's plugins include a number of data shredders that allow you to clear personal information from the system.
 This page shows you how to use these shredders through the API.
 
-.. versionchanged:: 4.12
-
-   This feature has been added to the API.
-
 .. warning::
 
    Unlike the user interface, the API will not force you to download tax-relevant data before you delete it.

doc/api/resources/subevents.rst

@@ -59,15 +59,6 @@ seat_category_mapping                 object                     An object mappi
 last_modified                         datetime                   Last modification of this object
 ===================================== ========================== =======================================================
 
-.. versionchanged:: 4.15
-
-    The ``search`` query parameter has been added to filter sub-events by their name or location in any language.
-
-.. versionchanged:: 5.0
-
-    The ``date_from_before``, ``date_from_after``, ``date_to_before``, and ``date_to_after`` query parameters have been
-    added.
-
 .. versionchanged:: 2023.8.0
 
     For the organizer-wide endpoint, the ``search`` query parameter has been modified to filter sub-events by their parent events slug too.
@@ -75,10 +66,6 @@ last_modified                         datetime                   Last modificati
 Endpoints
 ---------
 
-.. versionchanged:: 4.1
-
-    The ``with_availability_for`` parameter has been added.
-
 .. http:get:: /api/v1/organizers/(organizer)/events/(event)/subevents/
 
    Returns a list of all sub-events of an event.

doc/api/resources/taxrules.rst

@@ -26,6 +26,8 @@ rate                                  decimal (string)           Tax rate in per
 code                                  string                     Codified reason for tax rate (or ``null``), see :ref:`rest-taxcodes`.
 price_includes_tax                    boolean                    If ``true`` (default), tax is assumed to be included in
                                                                  the specified product price
+default                               boolean                    If ``true`` (default), this is the default tax rate for this event
+                                                                 (there can only be one per event).
 eu_reverse_charge                     boolean                    **DEPRECATED**. If ``true``, EU reverse charge rules
                                                                  are applied. Will be ignored if custom rules are set.
                                                                  Use custom rules instead.
@@ -40,10 +42,6 @@ custom_rules                          object                     Dynamic rules s
 ===================================== ========================== =======================================================
 
 
-.. versionchanged:: 4.6
-
-    The ``internal_name`` and ``keep_gross_if_rate_changes`` attributes have been added.
-
 .. versionchanged:: 2023.6
 
     The ``custom_rules`` attribute has been added.
@@ -52,6 +50,10 @@ custom_rules                          object                     Dynamic rules s
 
     The ``code`` attribute has been added.
 
+.. versionchanged:: 2025.4
+
+    The ``default`` attribute has been added.
+
 .. _rest-taxcodes:
 
 Tax codes
@@ -115,6 +117,7 @@ Endpoints
           {
             "id": 1,
             "name": {"en": "VAT"},
+            "default": true,
             "internal_name": "VAT",
             "code": "S/standard",
             "rate": "19.00",
@@ -157,6 +160,7 @@ Endpoints
       {
         "id": 1,
         "name": {"en": "VAT"},
+            "default": true,
         "internal_name": "VAT",
         "code": "S/standard",
         "rate": "19.00",
@@ -207,6 +211,7 @@ Endpoints
       {
         "id": 1,
         "name": {"en": "VAT"},
+        "default": false,
         "internal_name": "VAT",
         "code": "S/standard",
         "rate": "19.00",

doc/api/resources/teams.rst

@@ -39,10 +39,6 @@ can_change_vouchers                   boolean
 can_checkin_orders                    boolean
 ===================================== ========================== =======================================================
 
-.. versionchanged:: 4.18
-
-    The ``can_manage_reusable_media`` permission has been added.
-
 Team member resource
 --------------------
 

doc/api/resources/transactions.rst

@@ -0,0 +1,232 @@
+.. _rest-transactions:
+
+Transactions
+============
+
+Transactions are an additional way to think about orders. They are are an immutable, filterable view into an order's
+history and are a good basis for financial reporting.
+
+Our financial model
+-------------------
+
+You can think of a pretix order similar to a debtor account in double-entry bookkeeping. For example, the flow of an
+order could look like this:
+
+===================================================== ==================== =====================
+Transaction                                           Debit                Credit
+===================================================== ==================== =====================
+Order is placed with two tickets                      € 500
+Order is paid partially with a gift card                                   € 200
+Remainder is paid with a credit card                                       € 300
+One of the tickets is canceled                        **-** € 250
+Refund is made to the credit card                                          **-** € 250
+**Balance**                                           **€ 250**            **€ 250**
+===================================================== ==================== =====================
+
+If an order is fully settled, the sums of both columns match. However, as the movements in both columns do not always
+happen at the same time, at some times during the lifecycle of an order the sums are not balanced, in which case we
+consider an order to be "pending payment" or "overpaid".
+
+In the API, the "Debit" column is represented by the "transaction" resource listed on this page.
+In many cases, the left column *usually* also matches the data returned by the :ref:`rest-invoices` resource, but there
+are two important differences:
+
+- pretix may be configured such that an invoice is not always generated for an order. In this case, only the transactions
+  return the full data set.
+
+- pretix does not enforce a new invoice to be created e.g. when a ticket is changed to a different subevent. However,
+  pretix always creates a new transaction whenever there is a change to a ticket that concerns the **price**, **tax rate**,
+  **product**, or **date** (in an event series).
+
+The :ref:`rest-orders` themselves are not a good representation of the "Debit" side of the table for accounting
+purposes since they are not immutable:
+They will only tell you the current state of the order, not what it was a week ago.
+
+The "Credit" column is represented by the :ref:`order-payment-resource` and :ref:`order-refund-resource`.
+
+
+Resource description
+--------------------
+
+.. rst-class:: rest-resource-table
+
+===================================== ========================== =======================================================
+Field                                 Type                       Description
+===================================== ========================== =======================================================
+id                                    integer                    Internal ID of the transaction
+order                                 string                     Order code the transaction was created from
+event                                 string                     Event slug, only present on organizer-level API calls
+created                               datetime                   The creation time of the transaction in the database
+datetime                              datetime                   The time at which the transaction is financially relevant.
+                                                                 This is usually the same as created, but may vary for
+                                                                 retroactively created transactions after software bugs or
+                                                                 for data that preceeds this data model.
+positionid                            integer                    Number of the position within the order this refers to,
+                                                                 is ``null`` for transactions that refer to a fee
+count                                 integer                    Number of items purchased, is negative for cancellations
+item                                  integer                    The internal ID of the item purchased (or ``null`` for fees)
+variation                             integer                    The internal ID of the variation purchased (or ``null``)
+subevent                              integer                    The internal ID of the event series date (or ``null``)
+price                                 money (string)             Gross price of the transaction
+tax_rate                              decimal (string)           Tax rate applied in transaction
+tax_rule                              integer                    The internal ID of the tax rule used (or ``null``)
+tax_code                              string                     The selected tax code (or ``null``)
+tax_value                             money (string)             The computed tax value
+fee_type                              string                     The type of fee (or ``null`` for products)
+internal_type                         string                     Additional type classification of the fee (or ``null`` for products)
+===================================== ========================== =======================================================
+
+.. versionchanged:: 2025.7.0
+
+   This resource was added to the API.
+
+
+Endpoints
+---------
+
+.. http:get:: /api/v1/organizers/(organizer)/events/(event)/transactions/
+
+   Returns a list of all transactions of an event.
+
+   **Example request**:
+
+   .. sourcecode:: http
+
+      GET /api/v1/organizers/bigevents/events/sampleconf/transactions/ HTTP/1.1
+      Host: pretix.eu
+      Accept: application/json, text/javascript
+
+   **Example response**:
+
+   .. sourcecode:: http
+
+      HTTP/1.1 200 OK
+      Vary: Accept
+      Content-Type: application/json
+
+      {
+        "count": 1,
+        "next": null,
+        "previous": null,
+        "results": [
+          {
+            "id": 123,
+            "order": "FOO",
+            "count": 1,
+            "created": "2017-12-01T10:00:00Z",
+            "datetime": "2017-12-01T10:00:00Z",
+            "item": null,
+            "variation": null,
+            "positionid": 1,
+            "price": "23.00",
+            "subevent": null,
+            "tax_code": "E",
+            "tax_rate": "0.00",
+            "tax_rule": 23,
+            "tax_value": "0.00",
+            "fee_type": null,
+            "internal_type": null
+          }
+        ]
+      }
+
+   :query integer page: The page number in case of a multi-page result set, default is 1
+   :query string order: Only return transactions matching the given order code.
+   :query datetime_since: Only return transactions with a datetime at or after the given time.
+   :query datetime_before: Only return transactions with a datetime before the given time.
+   :query created_since: Only return transactions with a creation time at or after the given time.
+   :query created_before: Only return transactions with a creation time before the given time.
+   :query item: Only return transactions that match the given item ID.
+   :query item__in: Only return transactions that match one of the given item IDs (separated with a comma).
+   :query variation: Only return transactions that match the given variation ID.
+   :query variation__in: Only return transactions that match one of the given variation IDs (separated with a comma).
+   :query subevent: Only return transactions that match the given subevent ID.
+   :query subevent__in: Only return transactions that match one of the given subevent IDs (separated with a comma).
+   :query tax_rule: Only return transactions that match the given tax rule ID.
+   :query tax_rule__in: Only return transactions that match one of the given tax rule IDs (separated with a comma).
+   :query tax_code: Only return transactions that match the given tax code.
+   :query tax_code__in: Only return transactions that match one of the given tax codes (separated with a comma).
+   :query tax_rate: Only return transactions that match the given tax rate.
+   :query tax_rate__in: Only return transactions that match one of the given tax rates (separated with a comma).
+   :query fee_type: Only return transactions that match the given fee type.
+   :query fee_type__in: Only return transactions that match one of the given fee types (separated with a comma).
+   :query string ordering: Manually set the ordering of results. Valid fields to be used are ``datetime``, ``created``, and ``id``.
+   :param organizer: The ``slug`` field of a valid organizer
+   :param event: The ``slug`` field of a valid event
+   :statuscode 200: no error
+   :statuscode 401: Authentication failure
+   :statuscode 403: The requested organizer or event does not exist **or** you have no permission to view it.
+
+.. http:get:: /api/v1/organizers/(organizer)/transactions/
+
+   Returns a list of all transactions of an organizer that you have access to.
+
+   **Example request**:
+
+   .. sourcecode:: http
+
+      GET /api/v1/organizers/bigevents/transactions/ HTTP/1.1
+      Host: pretix.eu
+      Accept: application/json, text/javascript
+
+   **Example response**:
+
+   .. sourcecode:: http
+
+      HTTP/1.1 200 OK
+      Vary: Accept
+      Content-Type: application/json
+
+      {
+        "count": 1,
+        "next": null,
+        "previous": null,
+        "results": [
+          {
+            "id": 123,
+            "event": "sampleconf",
+            "order": "FOO",
+            "count": 1,
+            "created": "2017-12-01T10:00:00Z",
+            "datetime": "2017-12-01T10:00:00Z",
+            "item": null,
+            "variation": null,
+            "positionid": 1,
+            "price": "23.00",
+            "subevent": null,
+            "tax_code": "E",
+            "tax_rate": "0.00",
+            "tax_rule": 23,
+            "tax_value": "0.00",
+            "fee_type": null,
+            "internal_type": null
+          }
+        ]
+      }
+
+   :query integer page: The page number in case of a multi-page result set, default is 1
+   :query string event: Only return transactions matching the given event slug.
+   :query string order: Only return transactions matching the given order code.
+   :query datetime_since: Only return transactions with a datetime at or after the given time.
+   :query datetime_before: Only return transactions with a datetime before the given time.
+   :query created_since: Only return transactions with a creation time at or after the given time.
+   :query created_before: Only return transactions with a creation time before the given time.
+   :query item: Only return transactions that match the given item ID.
+   :query item__in: Only return transactions that match one of the given item IDs (separated with a comma).
+   :query variation: Only return transactions that match the given variation ID.
+   :query variation__in: Only return transactions that match one of the given variation IDs (separated with a comma).
+   :query subevent: Only return transactions that match the given subevent ID.
+   :query subevent__in: Only return transactions that match one of the given subevent IDs (separated with a comma).
+   :query tax_rule: Only return transactions that match the given tax rule ID.
+   :query tax_rule__in: Only return transactions that match one of the given tax rule IDs (separated with a comma).
+   :query tax_code: Only return transactions that match the given tax code.
+   :query tax_code__in: Only return transactions that match one of the given tax codes (separated with a comma).
+   :query tax_rate: Only return transactions that match the given tax rate.
+   :query tax_rate__in: Only return transactions that match one of the given tax rates (separated with a comma).
+   :query fee_type: Only return transactions that match the given fee type.
+   :query fee_type__in: Only return transactions that match one of the given fee types (separated with a comma).
+   :query string ordering: Manually set the ordering of results. Valid fields to be used are ``datetime``, ``created``, and ``id``.
+   :param organizer: The ``slug`` field of a valid organizer
+   :statuscode 200: no error
+   :statuscode 401: Authentication failure
+   :statuscode 403: The requested organizer does not exist **or** you have no permission to view it.

doc/api/resources/vouchers.rst

@@ -14,6 +14,7 @@ The voucher resource contains the following public fields:
 Field                                 Type                       Description
 ===================================== ========================== =======================================================
 id                                    integer                    Internal ID of the voucher
+created                               datetime                   The creation date of the voucher. For vouchers created before pretix 2025.7.0, this is guessed retroactively and might not be accurate.
 code                                  string                     The voucher code that is required to redeem the voucher
 max_usages                            integer                    The maximum number of times this voucher can be
                                                                  redeemed (default: 1).
@@ -49,8 +50,14 @@ subevent                              integer                    ID of the date
 show_hidden_items                     boolean                    Only if set to ``true``, this voucher allows to buy products with the property ``hide_without_voucher``. Defaults to ``true``.
 all_addons_included                   boolean                    If set to ``true``, all add-on products for the product purchased with this voucher are included in the base price.
 all_bundles_included                  boolean                    If set to ``true``, all bundled products for the product purchased with this voucher are added without their designated price.
+budget                                money (string)             The budget a voucher is allowed to consume before being used up (or ``null``)
+budget_used                           money (string)             The amount of budget the voucher has already used up.
 ===================================== ========================== =======================================================
 
+.. versionchanged:: 2025.7
+
+    The attributes ``created``, ``budget``, and ``budget_used`` have been added.
+
 
 Endpoints
 ---------
@@ -82,6 +89,7 @@ Endpoints
         "results": [
           {
             "id": 1,
+            "created": "2020-09-18T14:17:40.971519Z",
             "code": "43K6LKM37FBVR2YG",
             "max_usages": 1,
             "redeemed": 0,
@@ -99,7 +107,9 @@ Endpoints
             "subevent": null,
             "show_hidden_items": false,
             "all_addons_included": false,
-            "all_bundles_included": false
+            "all_bundles_included": false,
+            "budget": None,
+            "budget_used": "0.00"
           }
         ]
       }
@@ -152,6 +162,7 @@ Endpoints
 
       {
         "id": 1,
+        "created": "2020-09-18T14:17:40.971519Z",
         "code": "43K6LKM37FBVR2YG",
         "max_usages": 1,
         "redeemed": 0,
@@ -169,7 +180,9 @@ Endpoints
         "subevent": null,
         "show_hidden_items": false,
         "all_addons_included": false,
-        "all_bundles_included": false
+        "all_bundles_included": false,
+        "budget": None,
+        "budget_used": "0.00"
       }
 
    :param organizer: The ``slug`` field of the organizer to fetch
@@ -222,6 +235,7 @@ Endpoints
 
       {
         "id": 1,
+        "created": "2020-09-18T14:17:40.971519Z",
         "code": "43K6LKM37FBVR2YG",
         "max_usages": 1,
         "redeemed": 0,
@@ -239,7 +253,9 @@ Endpoints
         "subevent": null,
         "show_hidden_items": false,
         "all_addons_included": false,
-        "all_bundles_included": false
+        "all_bundles_included": false,
+        "budget": None,
+        "budget_used": "0.00"
       }
 
    :param organizer: The ``slug`` field of the organizer to create a voucher for
@@ -313,6 +329,7 @@ Endpoints
       [
         {
           "id": 1,
+          "created": "2020-09-18T14:17:40.971519Z",
           "code": "43K6LKM37FBVR2YG",
           …
         }, …
@@ -359,6 +376,7 @@ Endpoints
 
       {
         "id": 1,
+        "created": "2020-09-18T14:17:40.971519Z",
         "code": "43K6LKM37FBVR2YG",
         "max_usages": 1,
         "redeemed": 0,
@@ -376,7 +394,9 @@ Endpoints
         "subevent": null,
         "show_hidden_items": false,
         "all_addons_included": false,
-        "all_bundles_included": false
+        "all_bundles_included": false,
+        "budget": None,
+        "budget_used": "0.00"
       }
 
    :param organizer: The ``slug`` field of the organizer to modify

doc/api/resources/webhooks.rst

@@ -60,6 +60,9 @@ The following values for ``action_types`` are valid with pretix core:
     * ``pretix.event.added``
     * ``pretix.event.changed``
     * ``pretix.event.deleted``
+    * ``pretix.voucher.added``
+    * ``pretix.voucher.changed``
+    * ``pretix.voucher.deleted``
     * ``pretix.subevent.added``
     * ``pretix.subevent.changed``
     * ``pretix.subevent.deleted``

doc/development/algorithms/pricing.rst

@@ -178,3 +178,124 @@ Flowchart
 ---------
 
 .. image:: /images/cart_pricing.png
+
+
+.. _`algorithms-rounding`:
+
+Rounding of taxes
+-----------------
+
+pretix internally always stores taxes on a per-line level, like this:
+
+ ========== ========== =========== ======= =============
+   Product   Tax rate   Net price     Tax   Gross price
+ ========== ========== =========== ======= =============
+  Ticket A       19 %       84.03   15.97        100.00
+  Ticket B       19 %       84.03   15.97        100.00
+  Ticket C       19 %       84.03   15.97        100.00
+  Ticket D       19 %       84.03   15.97        100.00
+  Ticket E       19 %       84.03   15.97        100.00
+       Sum                 420.15   79.85        500.00
+ ========== ========== =========== ======= =============
+
+Whether the net price is computed from the gross price or vice versa is configured on the tax rule and may differ for every line.
+
+The line-based computation has a few significant advantages:
+
+- We can report both net and gross prices for every individual ticket.
+
+- We can report both net and gross prices for every filter imaginable, such as the gross sum of all sales of Ticket A
+  or the net sum of all sales for a specific date in an event series. All numbers will be exact.
+
+- When splitting the order into two, both net price and gross price are split without any changes in rounding.
+
+The main disadvantage is that the tax looks "wrong" when computed from the sum. Taking the sum of net prices (420.15)
+and multiplying it with the tax rate (19%) yields a tax amount of 79.83 (instead of 79.85) and a gross sum of 499.98
+(instead of 499.98). This becomes a problem when juristictions, data formats, or external systems expect this calculation
+to work on the level of the entire order. A prominent example is the EN 16931 standard for e-invoicing that
+does not allow the computation as created by pretix.
+
+However, calculating the tax rate from the net total has significant disadvantages:
+
+- It is impossible to guarantee a stable gross price this way, i.e. if you advertise a price of €100 per ticket to
+  consumers, they will be confused when they only need to pay €499.98 for 5 tickets.
+
+- Some prices are impossible, e.g. you cannot sell a ticket for a gross price of €99.99 at a 19% tax rate, since there
+  is no two-decimal net price that would be computed to a gross price of €99.99.
+
+- When splitting an order into two, the combined of the new orders is not guaranteed to be the same as the total of the
+  original order. Therefore, additional payments or refunds of very small amounts might be necessary.
+
+To allow organizers to make their own choices on this matter, pretix provides the following options:
+
+Compute taxes for every line individually
+"""""""""""""""""""""""""""""""""""""""""
+
+Algorithm identifier: ``line``
+
+This is our original algorithm where the tax value is rounded for every line individually.
+
+**This is our current default algorithm and we recommend it whenever you do not have different requirements** (see below).
+For the example above:
+
+ ========== ========== =========== ======= =============
+   Product   Tax rate   Net price     Tax   Gross price
+ ========== ========== =========== ======= =============
+  Ticket A       19 %       84.03   15.97        100.00
+  Ticket B       19 %       84.03   15.97        100.00
+  Ticket C       19 %       84.03   15.97        100.00
+  Ticket D       19 %       84.03   15.97        100.00
+  Ticket E       19 %       84.03   15.97        100.00
+       Sum                 420.15   79.85        500.00
+ ========== ========== =========== ======= =============
+
+
+Compute taxes based on net total
+""""""""""""""""""""""""""""""""
+
+Algorithm identifier: ``sum_by_net``
+
+In this algorithm, the tax value and gross total are computed from the sum of the net prices. To accomplish this within
+our data model, the gross price and tax of some of the tickets will be changed by the minimum currency unit (e.g. €0.01).
+The net price of the tickets always stay the same.
+
+**This is the algorithm intended by EN 16931 invoices and our recommendation to use for e-invoicing when (primarily) business customers are involved.**
+
+The main downside is that it might be confusing when selling to consumers, since the amounts to be paid change in unexpected ways.
+For the example above, the customer expects to pay 5 times 100.00, but they are are in fact charged 499.98:
+
+ ========== ========== =========== ============================== ==============================
+   Product   Tax rate   Net price                            Tax                    Gross price
+ ========== ========== =========== ============================== ==============================
+  Ticket A       19 %       84.03   15.96 (incl. -0.01 rounding)   99.99 (incl. -0.01 rounding)
+  Ticket B       19 %       84.03   15.96 (incl. -0.01 rounding)   99.99 (incl. -0.01 rounding)
+  Ticket C       19 %       84.03                          15.97                         100.00
+  Ticket D       19 %       84.03                          15.97                         100.00
+  Ticket E       19 %       84.03                          15.97                         100.00
+       Sum                 420.15                          78.83                         499.98
+ ========== ========== =========== ============================== ==============================
+
+Compute taxes based on net total with stable gross prices
+"""""""""""""""""""""""""""""""""""""""""""""""""""""""""
+
+Algorithm identifier: ``sum_by_net_keep_gross``
+
+In this algorithm, the tax value and gross total are computed from the sum of the net prices. However, the net prices
+of some of the tickets will be changed automatically by the minimum currency unit (e.g. €0.01) such that the resulting
+gross prices stay the same.
+
+**This is less confusing to consumers and the end result is still compliant to EN 16931, so we recommend this for e-invoicing when (primarily) consumers are involved.**
+
+The main downside is that it might be confusing when selling to business customers, since the prices of the identical tickets appear to be different.
+Full computation for the example above:
+
+ ========== ========== ============================= ============================== =============
+   Product   Tax rate                     Net price                            Tax   Gross price
+ ========== ========== ============================= ============================== =============
+  Ticket A       19 %   84.04 (incl. 0.01 rounding)   15.96 (incl. -0.01 rounding)        100.00
+  Ticket B       19 %   84.04 (incl. 0.01 rounding)   15.96 (incl. -0.01 rounding)        100.00
+  Ticket C       19 %                         84.03                          15.97        100.00
+  Ticket D       19 %                         84.03                          15.97        100.00
+  Ticket E       19 %                         84.03                          15.97        100.00
+       Sum                                   420.17                          79.83        500.00
+ ========== ========== ============================= ============================== =============

doc/development/api/customview.rst

@@ -178,13 +178,6 @@ You can then implement a view as you would normally do. It will be automatically
 * Your plugin is enabled
 * The locale is set correctly
 
-.. versionchanged:: 1.7
-
-   The ``event_url()`` wrapper has been added in 1.7 to replace the former ``@event_view`` decorator. The
-   ``event_url()`` wrapper is optional and using ``url()`` still works, but you will not be able to set the
-   ``require_live`` setting any more via the decorator. The ``@event_view`` decorator is now deprecated and
-   does nothing.
-
 REST API viewsets
 -----------------
 

doc/development/api/datasync.rst

@@ -0,0 +1,207 @@
+.. highlight:: python
+   :linenothreshold: 5
+
+Data sync providers
+===================
+
+.. warning:: This feature is considered **experimental**. It might change at any time without prior notice.
+
+pretix provides connectivity to many external services through plugins. A common requirement
+is unidirectionally sending (order, customer, ticket, ...) data into external systems.
+The transfer is usually triggered by signals provided by pretix core (e.g. :data:`order_placed`),
+but performed asynchronously.
+
+Such plugins should use the :class:`OutboundSyncProvider` API to utilize the queueing, retry and mapping 
+mechanisms as well as the user interface for configuration and monitoring. Sync providers are registered 
+in the :py:attr:`pretix.base.datasync.datasync.datasync_providers` :ref:`registry <registries>`.
+
+An :class:`OutboundSyncProvider` for subscribing event participants to a mailing list could start
+like this, for example:
+
+.. code-block:: python
+
+    from pretix.base.datasync.datasync import (OutboundSyncProvider, datasync_providers)
+
+    @datasync_providers.register
+    class MyListSyncProvider(OutboundSyncProvider):
+        identifier = "my_list"
+        display_name = "My Mailing List Service"
+        # ...
+
+
+The plugin must register listeners in `signals.py` for all signals that should to trigger a sync and
+within it has to call :meth:`MyListSyncProvider.enqueue_order` to enqueue the order for synchronization:
+
+.. code-block:: python
+
+    @receiver(order_placed, dispatch_uid="mylist_order_placed")
+    def on_order_placed(sender, order, **kwargs):
+        MyListSyncProvider.enqueue_order(order, "order_placed")
+
+
+Property mappings
+-----------------
+
+Most of these plugins need to translate data from some pretix objects (e.g. orders)
+into an external system's data structures. Sometimes, there is only one reasonable way or the
+plugin author makes an opinionated decision what information from which objects should be
+transferred into which data structures in the external system.
+
+Otherwise, you can use a :class:`PropertyMappingFormSet` to let the user set up a mapping from pretix model fields
+to external data fields. You could store the mapping information either in the event settings, or in a separate
+data model. Your implementation of :attr:`OutboundSyncProvider.mappings`
+needs to provide a list of mappings, which can be e.g. static objects or model instances, as long as they
+have at least the properties defined in
+:class:`pretix.base.datasync.datasync.StaticMapping`.
+
+.. code-block:: python
+
+    # class MyListSyncProvider, contd.
+        def mappings(self):
+            return [
+                StaticMapping(
+                    id=1, pretix_model='Order', external_object_type='Contact',
+                    pretix_id_field='email', external_id_field='email',
+                    property_mappings=self.event.settings.mylist_order_mapping,
+                ))
+            ]
+
+
+Currently, we support `orders` and `order positions` as data sources, with the data fields defined in
+:func:`pretix.base.datasync.sourcefields.get_data_fields`.
+
+To perform the actual sync, implement :func:`sync_object_with_properties` and optionally
+:func:`finalize_sync_order`. The former is called for each object to be created according to the ``mappings``.
+For each order that was enqueued using :func:`enqueue_order`:
+
+- each Mapping with ``pretix_model == "Order"`` results in one call to :func:`sync_object_with_properties`,
+- each Mapping with ``pretix_model == "OrderPosition"`` results in one call to
+  :func:`sync_object_with_properties` per order position,
+- :func:`finalize_sync_order` is called one time after all calls to :func:`sync_object_with_properties`.
+
+
+Implementation examples
+-----------------------
+
+For example implementations, see the test cases in :mod:`tests.base.test_datasync`.
+
+In :class:`SimpleOrderSync`, a basic data transfer of order data only is
+shown. Therein, a ``sync_object_with_properties`` method is defined as follows:
+
+.. code-block:: python
+
+    from pretix.base.datasync.utils import assign_properties
+
+    # class MyListSyncProvider, contd.
+    def sync_object_with_properties(
+            self, external_id_field, id_value, properties: list, inputs: dict,
+            mapping, mapped_objects: dict, **kwargs,
+    ):
+        # First, we query the external service if our object-to-sync already exists there.
+        # This is necessary to make sure our method is idempotent, i.e. handles already synced
+        # data gracefully.
+        pre_existing_object = self.fake_api_client.retrieve_object(
+            mapping.external_object_type,
+            external_id_field,
+            id_value
+        )
+
+        # We use the helper function ``assign_properties`` to update a pre-existing object.
+        update_values = assign_properties(
+            new_values=properties,
+            old_values=pre_existing_object or {},
+            is_new=pre_existing_object is None,
+            list_sep=";",
+        )
+
+        # Then we can send our new data to the external service. The specifics of course depends
+        # on your API, e.g. you may need to use different endpoints for creating or updating an
+        # object, or pass the identifier separately instead of in the same dictionary as the
+        # other properties.
+        result = self.fake_api_client.create_or_update_object(mapping.external_object_type, {
+            **update_values,
+            external_id_field: id_value,
+            "_id": pre_existing_object and pre_existing_object.get("_id"),
+        })
+
+        # Finally, return a dictionary containing at least `object_type`, `external_id_field`,
+        # `id_value`, `external_link_href`, and `external_link_display_name` keys.
+        # Further keys may be provided for your internal use. This dictionary is provided
+        # in following calls in the ``mapped_objects`` dict, to allow creating associations
+        # to this object.
+        return {
+            "object_type": mapping.external_object_type,
+            "external_id_field": external_id_field,
+            "id_value": id_value,
+            "external_link_href": f"https://example.org/external-system/{mapping.external_object_type}/{id_value}/",
+            "external_link_display_name": f"Contact #{id_value} - Jane Doe",
+            "my_result": result,
+        }
+
+.. note:: The result dictionaries of earlier invocations of :func:`sync_object_with_properties` are
+          only provided in subsequent calls of the same sync run, such that a mapping can
+          refer to e.g. the external id of an object created by a preceding mapping.
+          However, the result dictionaries are currently not provided across runs. This will
+          likely change in a future revision of this API, to allow easier integration of external
+          systems that do not allow retrieving/updating data by a pretix-provided key.
+
+``mapped_objects`` is a dictionary of lists of dictionaries. The keys to the dictionary are
+the mapping identifiers (``mapping.id``), the lists contain the result dictionaries returned
+by :func:`sync_object_with_properties`.
+
+
+In :class:`OrderAndTicketAssociationSync`, an example is given where orders, order positions,
+and the association between them are transferred.
+
+
+The OutboundSyncProvider base class
+-----------------------------------
+
+.. autoclass:: pretix.base.datasync.datasync.OutboundSyncProvider
+   :members:
+
+
+Property mapping format
+-----------------------
+
+To allow the user to configure property mappings, you can use the PropertyMappingFormSet,
+which will generate the required ``property_mappings`` value automatically. If you need
+to specify the property mappings programmatically, you can refer to the description below
+on their format.
+
+.. autoclass:: pretix.control.forms.mapping.PropertyMappingFormSet
+   :members: to_property_mappings_json
+
+A simple JSON-serialized ``property_mappings`` list for mapping some order information can look like this:
+
+.. code-block:: json
+
+      [
+        {
+            "pretix_field": "email",
+            "external_field": "orderemail",
+            "value_map": "",
+            "overwrite": "overwrite",
+        },
+        {
+            "pretix_field": "order_status",
+            "external_field": "status",
+            "value_map": "{\"n\": \"pending\", \"p\": \"paid\", \"e\": \"expired\", \"c\": \"canceled\", \"r\": \"refunded\"}",
+            "overwrite": "overwrite",
+        },
+        {
+            "pretix_field": "order_total",
+            "external_field": "total",
+            "value_map": "",
+            "overwrite": "overwrite",
+        }
+      ]
+
+
+Translating mappings on Event copy
+----------------------------------
+
+Property mappings can contain references to event-specific primary keys. Therefore, plugins must register to the
+event_copy_data signal and call translate_property_mappings on all property mappings they store.
+
+.. autofunction:: pretix.base.datasync.utils.translate_property_mappings

doc/development/api/general.rst

@@ -23,21 +23,21 @@ There are multiple signals that will be sent out in the ordering cycle:
 
 .. automodule:: pretix.base.signals
    :no-index:
-   :members: validate_cart, validate_cart_addons, validate_order, order_valid_if_pending, order_fee_calculation, order_paid, order_placed, order_canceled, order_reactivated, order_expired, order_expiry_changed, order_modified, order_changed, order_approved, order_denied, order_fee_type_name, allow_ticket_download, order_split, order_gracefully_delete, invoice_line_text
+   :members: validate_cart, validate_cart_addons, validate_order, order_valid_if_pending, order_fee_calculation, order_paid, order_placed, order_canceled, order_reactivated, order_expired, order_expiry_changed, order_modified, order_changed, order_approved, order_denied, order_fee_type_name, allow_ticket_download, order_split, order_gracefully_delete, build_invoice_data, invoice_line_text
 
 Check-ins
 """""""""
 
 .. automodule:: pretix.base.signals
    :no-index:
-   :members: checkin_created
+   :members: checkin_created, checkin_annulled
 
 
 Frontend
 --------
 
 .. automodule:: pretix.presale.signals
-   :members: html_head, html_footer, footer_link, global_footer_link, front_page_top, front_page_bottom, front_page_bottom_widget, fee_calculation_for_cart, contact_form_fields, question_form_fields, contact_form_fields_overrides, question_form_fields_overrides, checkout_confirm_messages, checkout_confirm_page_content, checkout_all_optional, html_page_header, render_seating_plan, checkout_flow_steps, position_info, position_info_top, item_description, global_html_head, global_html_footer, global_html_page_header, seatingframe_html_head
+   :members: html_head, html_footer, footer_link, global_footer_link, front_page_top, front_page_bottom, front_page_bottom_widget, fee_calculation_for_cart, contact_form_fields, question_form_fields, contact_form_fields_overrides, question_form_fields_overrides, checkout_confirm_messages, checkout_confirm_page_content, checkout_all_optional, html_page_header, render_seating_plan, checkout_flow_steps, position_info, position_info_top, item_description, global_html_head, global_html_footer, global_html_page_header, seatingframe_html_head, filter_subevents
 
 
 .. automodule:: pretix.presale.signals

doc/development/api/index.rst

@@ -10,14 +10,15 @@ Contents:
    exporter
    ticketoutput
    payment
-   payment_2.0
    email
    placeholder
    invoice
+   invoicetransmission
    shredder
    import
    customview
    cookieconsent
    auth
+   datasync
    general
    quality

doc/development/api/invoicetransmission.rst

@@ -0,0 +1,65 @@
+.. highlight:: python
+   :linenothreshold: 5
+
+Writing an invoice transmission plugin
+======================================
+
+An invoice transmission provider transports an invoice from the sender to the recipient.
+There are pre-defined types of invoice transmission in pretix, currently ``"email"``, ``"peppol"``, and ``"it_sdi"``.
+You can find more information about them at :ref:`rest-transmission-types`.
+
+New transmission types can not be added by plugins but need to be added to pretix itself.
+However, plugins can provide implementations for the actual transmission.
+Please read :ref:`Creating a plugin <pluginsetup>` first, if you haven't already.
+
+Output registration
+-------------------
+
+New invoice transmission providers can be registered through the :ref:`registry <registries>` mechanism
+
+.. code-block:: python
+
+   from pretix.base.invoicing.transmission import transmission_providers, TransmissionProvider
+
+   @transmission_providers.new()
+   class SdiTransmissionProvider(TransmissionProvider):
+       identifier = "fatturapa_providerabc"
+       type = "it_sdi"
+       verbose_name = _("FatturaPA through provider ABC")
+       ...
+
+
+The provider class
+------------------
+
+.. class:: pretix.base.invoicing.transmission.TransmissionProvider
+
+   .. autoattribute:: identifier
+
+      This is an abstract attribute, you **must** override this!
+
+   .. autoattribute:: type
+
+      This is an abstract attribute, you **must** override this!
+
+   .. autoattribute:: verbose_name
+
+      This is an abstract attribute, you **must** override this!
+
+   .. autoattribute:: priority
+
+   .. autoattribute:: testmode_supported
+
+   .. automethod:: is_ready
+
+      This is an abstract method, you **must** override this!
+
+   .. automethod:: is_available
+
+      This is an abstract method, you **must** override this!
+
+   .. automethod:: transmit
+
+      This is an abstract method, you **must** override this!
+
+   .. automethod:: settings_url

doc/development/api/payment_2.0.rst

@@ -1,129 +0,0 @@
-.. highlight:: python
-   :linenothreshold: 5
-
-.. _`payment2.0`:
-
-Porting a payment provider from pretix 1.x to pretix 2.x
-========================================================
-
-In pretix 2.x, we changed large parts of the payment provider API. This documentation details the changes we made
-and shows you how you can make an existing pretix 1.x payment provider compatible with pretix 2.x
-
-Conceptual overview
--------------------
-
-In pretix 1.x, an order was always directly connected to a payment provider for the full life of an order. As long as
-an order was unpaid, this could still be changed in some cases, but once an order was paid, no changes to the payment
-provider were possible any more. Additionally, the internal state of orders allowed orders only to be fully paid or
-not paid at all. This leads to a couple of consequences:
-
-* Payment-related functions (like "execute payment" or "do a refund") always operated on full orders.
-
-* Changing the total of an order was basically impossible once an order was paid, since there was no concept of
-  partial payments or partial refunds.
-
-* Payment provider plugins needed to take complicated steps to detect cases that require human intervention, like e.g.
-
-  * An order has expired, no quota is left to revive it, but a payment has been received
-
-  * A payment has been received for a canceled order
-
-  * A payment has been received for an order that has already been paid with a different payment method
-
-  * An external payment service notified us of a refund/dispute
-
-  We noticed that we copied and repeated large portions of code in all our official payment provider plugins, just
-  to deal with some of these cases.
-
-* Sometimes, there is the need to mark an order as refunded within pretix, without automatically triggering a refund
-  with an external API. Every payment method needed to implement a user interface for this independently.
-
-* If a refund was not possible automatically, there was no way user to track which payments actually have been refunded
-  manually and which are still left to do.
-
-* When the payment with one payment provider failed and the user changed to a different payment provider, all
-  information about the first payment was lost from the order object and could only be retrieved from order log data,
-  which also made it hard to design a data shredder API to get rid of this data.
-
-In pretix 2.x, we introduced two new models, :py:class:`OrderPayment <pretix.base.models.OrderPayment>` and
-:py:class:`OrderRefund <pretix.base.models.OrderRefund>`. Each instance of these is connected to an order and
-represents one single attempt to pay or refund a specific amount of money. Each one of these has an individual state,
-can individually fail or succeed, and carries an amount variable that can differ from the order total.
-
-This has the following advantages:
-
-* The system can now detect orders that are over- or underpaid, independent of the payment providers in use.
-
-* Therefore, we can now allow partial payments, partial refunds, and changing paid orders, and automatically detect
-  the cases listed above and notify the user.
-
-Payment providers now interact with those payment and refund objects more than with orders.
-
-Your to-do list
----------------
-
-Payment processing
-""""""""""""""""""
-
-* The method ``BasePaymentProvider.order_pending_render`` has been removed and replaced by a new
-  ``BasePaymentProvider.payment_pending_render(request, payment)`` method that is passed an ``OrderPayment``
-  object instead of an ``Order``.
-
-* The method ``BasePaymentProvider.payment_form_render`` now receives a new ``total`` parameter.
-
-* The method ``BasePaymentProvider.payment_perform`` has been removed and replaced by a new method
-  ``BasePaymentProvider.execute_payment(request, payment)`` that is passed an ``OrderPayment``
-  object instead of an ``Order``.
-
-* The function ``pretix.base.services.mark_order_paid`` has been removed, instead call ``payment.confirm()``
-  on a pending ``OrderPayment`` object. If no further payments are required for this order, this will also
-  mark the order as paid automatically. Note that ``payment.confirm()`` can still throw a ``QuotaExceededException``,
-  however it will still mark the payment as complete (not the order!), so you should catch this exception and
-  inform the user, but not abort the transaction.
-
-* A new property ``BasePaymentProvider.abort_pending_allowed`` has been introduced. Only if set, the user will
-  be able to retry a payment or switch the payment method when the order currently has a payment object in
-  state ``"pending"``. This replaces ``BasePaymentProvider.order_can_retry``, which no longer exists.
-
-* The methods ``BasePaymentProvider.retry_prepare`` and ``BasePaymentProvider.order_prepare`` have both been
-  replaced by a new method ``BasePaymentProvider.payment_prepare(request, payment)`` that is passed an ``OrderPayment``
-  object instead of an ``Order``. **Keep in mind that this payment object might have an amount property that
-  differs from the order total, if the order is already partially paid.**
-
-* The method ``BasePaymentProvider.order_paid_render`` has been removed.
-
-* The method ``BasePaymentProvider.order_control_render`` has been removed and replaced by a new method
-  ``BasePaymentProvider.payment_control_render(request, payment)`` that is passed an ``OrderPayment``
-  object instead of an ``Order``.
-
-* There's no need to manually deal with excess payments or duplicate payments anymore, just setting the ``OrderPayment``
-  methods to the correct state will do the job.
-
-Creating refunds
-""""""""""""""""
-
-* The methods ``BasePaymentProvider.order_control_refund_render`` and ``BasePaymentProvider.order_control_refund_perform``
-  have been removed.
-
-* Two new boolean methods ``BasePaymentProvider.payment_refund_supported(payment)`` and ``BasePaymentProvider.payment_partial_refund_supported(payment)``
-  have been introduced. They should be set to return ``True`` if and only if the payment API allows to *automatically*
-  transfer the money back to the customer.
-
-* A new method ``BasePaymentProvider.execute_refund(refund)`` has been introduced. This method is called using a
-  ``OrderRefund`` object in ``"created"`` state and is expected to transfer the money back and confirm success with
-  calling ``refund.done()``. This will only ever be called if either ``BasePaymentProvider.payment_refund_supported(payment)``
-  or ``BasePaymentProvider.payment_partial_refund_supported(payment)`` return ``True``.
-
-Processing external refunds
-"""""""""""""""""""""""""""
-
-* If e.g. a webhook API notifies you that a payment has been disputed or refunded with the external API, you are
-  expected to call ``OrderPayment.create_external_refund(self, amount, execution_date, info='{}')`` on this payment.
-  This will create and return an appropriate ``OrderRefund`` object and send out a notification. However, it will not
-  mark the order as refunded, but will ask the event organizer for a decision.
-
-Data shredders
-""""""""""""""
-
-* The method ``BasePaymentProvider.shred_payment_info`` is no longer passed an order, but instead **either**
-  an ``OrderPayment`` **or** an ``OrderRefund``.

doc/development/api/plugins.rst

@@ -56,6 +56,20 @@ restricted         boolean (optional)   ``False`` by default, restricts a plugin
                                         for an event by system administrators / superusers.
 experimental       boolean (optional)   ``False`` by default, marks a plugin as an experimental feature in the plugins list.
 compatibility      string               Specifier for compatible pretix versions.
+level              string               System level the plugin can be activated at.
+                                        Set to ``pretix.base.plugins.PLUGIN_LEVEL_EVENT`` for plugins that can be activated
+                                        at event level and then be active for that event only.
+                                        Set to ``pretix.base.plugins.PLUGIN_LEVEL_ORGANIZER`` for plugins that can be
+                                        activated only for the organizer as a whole and are active for any event within
+                                        that organizer.
+                                        Set to ``pretix.base.plugins.PLUGIN_LEVEL_EVENT_ORGANIZER_HYBRID`` for plugins that
+                                        can be activated at organizer level but are considered active only within events
+                                        for which they have also been specifically activated.
+                                        More levels, e.g. user-level plugins, might be invented in the future.
+settings_links     list                 List of ``((menu name, submenu name, …), urlname, url_kwargs)`` tuples that point
+                                        to the plugin's settings.
+navigation_links   list                 List of ``((menu name, submenu name, …), urlname, url_kwargs)`` tuples that point
+                                        to the plugin's system pages.
 ================== ==================== ===========================================================
 
 A working example would be:
@@ -63,9 +77,9 @@ A working example would be:
 .. code-block:: python
 
     try:
-        from pretix.base.plugins import PluginConfig
+        from pretix.base.plugins import PluginConfig, PLUGIN_LEVEL_EVENT
     except ImportError:
-        raise RuntimeError("Please use pretix 2.7 or above to run this plugin!")
+        raise RuntimeError("Please use pretix 2025.7 or above to run this plugin!")
     from django.utils.translation import gettext_lazy as _
 
 
@@ -79,11 +93,14 @@ A working example would be:
             version = '1.0.0'
             category = 'PAYMENT'
             picture = 'pretix_paypal/paypal_logo.svg'
+            level = PLUGIN_LEVEL_EVENT
             visible = True
             featured = False
             restricted = False
             description = _("This plugin allows you to receive payments via PayPal")
             compatibility = "pretix>=2.7.0"
+            settings_links = []
+            navigation_links = []
 
 
     default_app_config = 'pretix_paypal.PaypalApp'
@@ -140,14 +157,14 @@ method to make your receivers available:
             from . import signals  # NOQA
 
 You can optionally specify code that is executed when your plugin is activated for an event
-in the ``installed`` method:
+or organizer in the ``installed`` method:
 
 .. code-block:: python
 
     class PaypalApp(AppConfig):
         …
 
-        def installed(self, event):
+        def installed(self, event_or_organizer):
             pass  # Your code here
 
 
@@ -185,6 +202,28 @@ your Django app label.
    with checking that the calling user is logged in, has appropriate permissions,
    etc. We plan on providing native support for this in a later version.
 
+To make your plugin views easily discoverable, you can specify links for "Go to"
+and "Settings" buttons next to your entry on the plugin page. These links should be
+added to the ``navigation_links`` and ``settings_links``, respectively, in the
+``PretixPluginMeta`` class.
+
+Each array entry consists of a tuple ``(label, urlname, kwargs)``. For the label,
+either a string or a tuple of strings can be specified. In the latter case, the provided
+strings will be merged with a separator indicating they are successive navigation steps
+the user would need to take to reach the page via the regular menu
+(e.g. "Payment > Bank transfer" as below).
+
+.. code-block:: python
+
+        settings_links = [
+            ((_("Payment"), _("Bank transfer")), "control:event.settings.payment.provider", {"provider": "banktransfer"}),
+        ]
+        navigation_links = [
+            ((_("Bank transfer"), _("Import bank data")), "plugins:banktransfer:import", {}),
+            ((_("Bank transfer"), _("Export refunds")), "plugins:banktransfer:refunds.list", {}),
+        ]
+
+
 .. _Django app: https://docs.djangoproject.com/en/3.0/ref/applications/
 .. _signal dispatcher: https://docs.djangoproject.com/en/3.0/topics/signals/
 .. _namespace packages: https://legacy.python.org/dev/peps/pep-0420/

doc/development/setup.rst

@@ -5,7 +5,7 @@ Development setup
 
 This tutorial helps you to get started hacking with pretix on your own computer. You need this to
 be able to contribute to pretix, but it might also be helpful if you want to write your own plugins.
-If you want to install pretix on a server for actual usage, go to the [administrator documentation](https://docs.pretix.eu/self-hosting/) instead.
+If you want to install pretix on a server for actual usage, go to the `administrator documentation`_ instead.
 
 Obtain a copy of the source code
 --------------------------------
@@ -221,3 +221,4 @@ your virtual environment.::
 
 .. _Django's documentation: https://docs.djangoproject.com/en/1.11/ref/django-admin/#runserver
 .. _pretixdroid: https://github.com/pretix/pretixdroid
+.. _administrator documentation: https://docs.pretix.eu/self-hosting/

doc/images/cart_pricing.puml

@@ -23,6 +23,7 @@ partition "For every cart position" {
     --> "Store as line_price (gross), tax_rate"
 }
 --> "Apply discount engine"
+--> "Apply tax rounding"
 --> "Store as price (gross)"
 
 @enduml

doc/license/faq.rst

@@ -1,177 +0,0 @@
-.. spelling:word-list::
-
-   AGPL
-   AGPLv3
-   GPL
-   LGPL
-   Apache
-   BSD
-   MIT
-   CLA
-   django
-   i18nfields
-   hierarkey
-   rami.io
-   rami
-   io
-   GmbH
-
-License FAQ
-===========
-
-.. warning::
-
-   This FAQ tries to explain in simpler terms what the license of the pretix open source project does and does not
-   allow. It is based on our interpretation of the license and is not legal advice. The contents of this page are not
-   legally binding, only the original text of the license in the `license file`_ is legally binding.
-
-How is pretix licensed?
------------------------
-
-pretix follows the popular dual licensing model. It is available under the `GNU Affero General Public License 3`_ (AGPL)
-plus some additional terms, as well as under a proprietary license ("pretix Enterprise license") on request.
-
-How can it be AGPL if there are additional terms?
--------------------------------------------------
-
-Even though it is fairly unknown, the AGPL's section 7 is titled "Additional Terms" and outlines specific conditions
-under which additional terms can be imposed on an AGPL-licensed work. In our case, we add three additional terms.
-
-The first additional term for pretix is an additional **permission**. It allows you to do something that the AGPL would
-generally not allow. As it doesn't restrict your freedoms granted by AGPL, if you don't like it, you can ignore it, and
-if you distribute pretix further, you can remove it.
-
-The second and third additional term for pretix are additional terms that restrict or specify other provisions of the
-license. AGPL specifically requires that these terms can only restrict or specify very specific things and we believe
-our additional terms are in compliance with that and are thus valid and may not be removed.
-
-Why did you choose this license model?
---------------------------------------
-
-pretix was born in the open source community and we're deeply committed to building the best open source ticketing
-solution in the world. It is important to us that pretix is available with a comprehensive feature set under term that
-are compatible with the `Open Source Definition`_. This enables event organizers from all industries and regions
-to have access to a self-hosted, privacy-friendly and secure option to host their events.
-
-However, developing and maintaining pretix is a lot of work. Between 2014 and 2021, we've received external
-contributions from more than 150 individuals. Not counting translations over 90 % of the development was
-done by staff engineers of rami.io GmbH, the company that started pretix. While we're very happy to receive many more
-contributions in the future, we also want to ensure that we continue to be able to pay people working on pretix
-full-time.
-
-We believe our model creates a good balance between ensuring pretix is available freely as well as protecting our
-business interests. Unlike licenses chosen by other projects recently, such as the Server-Side Public License, our
-choice does not restrict using pretix for any possible use case, it just sets a few rules that you have to play by
-if you do.
-
-What do I need to do if I use pretix unmodified?
-------------------------------------------------
-
-If you use pretix without any modifications or plugins, you can use it for whatever you want, as long as you keep
-all copyright notices (including the link to pretix at the bottom of the site) intact.
-
-You are also allowed to make copies of the unmodified source code and distribute them to others as long as you keep
-all copyright and license information intact.
-
-If you install **plugins**, you must follow the same terms as when using a **modified** version (see below).
-
-What do I need to do if I modify pretix?
-----------------------------------------
-
-If you want to modify pretix, you have the right to do so. However, you need to follow the following rules:
-
-* If you **run it for your own events** (events run by you or your company as well as companies from the same
-  corporate groups) our additional permission allows you to do so **without needing to share your source code
-  modifications** as long as you keep the link to pretix at the bottom of the site intact.
-
-* If you **run it for others**, for example as part of a Software-as-a-Service offering or a managed hosting service
-  you **must** make the source code **including all your modifications and all installed plugins** available under the
-  same license as pretix to every visitor of your site. You need to do so in a prominent place such as a link at the bottom of the
-  site. You also **must** keep the existing link intact.
-  You **may not** add additional restrictions on the result as a whole. You **may** add additional permissions, but
-  only on the parts you added. You **must** make clear which changes you made and you must not give the impression that
-  your modified version is an official version of pretix.
-
-* If you **distribute** the modified version, for example as a source code or software package, you **must** license it
-  under the AGPL license with the same additional terms. You **may not** add additional restrictions on the result as a
-  whole. You **may** add additional permissions, but only on the parts you added. You **must** make clear which changes
-  you made and you must not give the impression that your modified version is an official version of pretix.
-
-Does the AGPL copyleft mechanism extend to plugins?
----------------------------------------------------
-
-Yes. pretix plugins are tightly integrated with pretix, so when running pretix together with a plugin in the same
-environment they form a `combined work`_ and the copyleft mechanism of AGPL applies.
-
-Can I create proprietary or secret plugins?
--------------------------------------------
-
-Yes, you can create a proprietary or secret plugin, but it may only ever be **used** in an environment that is covered
-by the additional permission from our license. As soon as the plugin is installed in an installation that is not covered
-by our additional permission (e.g. when it is used in a SaaS environment) or covered by an active pretix Enterprise
-license it **must** be released to the visitors of the site under the same license as pretix (like a modified version
-of pretix).
-
-What licenses can plugins use?
-------------------------------
-
-Technically, you can distribute a plugin under any free or proprietary license as long as it is distributed separately.
-However, once it is either **distributed together with pretix or used in an environment not covered by our
-additional permission** or an active pretix Enterprise license, you **must** release it to all recipients of the
-distribution or all visitors of your site under the same license as pretix (like a modified version of pretix).
-
-If you release a plugin publicly, it is therefore most practical to use a license that is `compatible to AGPL`_.
-This includes most open source licenses such as AGPL, GPL, Apache, 3-clause BSD or MIT.
-
-Note however that when you license a plugin with pure AGPL, it will be incompatible with our additional permission.
-Therefore, if you want to use an AGPL-licensed plugin, you'll need to publish the source code of **all** your plugins
-under AGPL terms **even if you only use it for your own events**. A plugin would add its `own additional permission`_
-to its license to allow combining it with pretix for this use case.
-
-To make things less complicated, if you want to distribute a plugin freely, we therefore recommend distributing the
-plugin under **Apache License 2.0**, like we do for most plugins we distribute as open source.
-
-What do I need to do if I want to contribute my changes back?
--------------------------------------------------------------
-
-In order to retain the possibility for us to offer pretix in a dual licensing model, we unfortunately need you to sign
-a Contributor License Agreement (CLA) that gives us permission to use your contribution in all present and future
-distributions of pretix. We know the bureaucracy sucks. Sorry.
-
-What if I want to re-use a minor part of pretix in my project?
---------------------------------------------------------------
-
-This is the main part we dislike about AGPL: If you see a specific thing in pretix that you'd like to use in another
-project, you'll need to distribute your other project under AGPL terms as well which is often not practical.
-
-In this case, feel free to get in touch with us! We're happy to grant you special permission or pull the component
-out into a separately, permissively licensed repository. We already did that with `django-hierarkey`_ and
-`django-i18nfield`_ which have previously been parts of pretix.
-
-What can I use the name "pretix" for?
--------------------------------------
-
-The name pretix is a registered trademark by rami.io GmbH.
-
-* You **may** use it to **indicate copyright**, such as in the "powered by pretix" or "based on pretix" line, or when
-  indicating that a distribution is based on pretix.
-
-* You **may** use it to **indicate compatibility**, for example you are allowed to name your plugin "<name> for pretix"
-  or you may state that an external service is compatible with pretix.
-
-* You **may not** give the impression that your modified version, plugin or compatible service is official or authorized
-  by rami.io GmbH or pretix unless we specifically allowed you to do so.
-
-* You **may not** use it to name your modified version of pretix. End-users must be able to easily identify whether
-  a version of pretix is distributed by us.
-
-* You **may not** use any variations of the name, such as "MyPretix".
-
-.. _license file: https://github.com/pretix/pretix/blob/master/LICENSE
-.. _GNU Affero General Public License 3: https://www.gnu.org/licenses/agpl-3.0.en.html
-.. _compatible to AGPL: https://www.gnu.org/licenses/license-list.en.html#GPLCompatibleLicenses
-.. _Open Source Definition: https://opensource.org/osd
-.. _combined work: https://www.gnu.org/licenses/gpl-faq.html#GPLPlugins
-.. _own additional permission: https://www.gnu.org/licenses/gpl-faq.html#GPLIncompatibleLibs
-.. _django-hierarkey: https://github.com/raphaelm/django-hierarkey
-.. _django-i18nfield: https://github.com/raphaelm/django-i18nfield

doc/requirements.rtd.txt

@@ -6,4 +6,4 @@ sphinxcontrib-images
 sphinxcontrib-jquery
 sphinxcontrib-spelling==8.*
 sphinxemoji
-pyenchant==3.2.*
+pyenchant==3.3.*

doc/requirements.txt

@@ -7,4 +7,4 @@ sphinxcontrib-images
 sphinxcontrib-jquery
 sphinxcontrib-spelling==8.*
 sphinxemoji
-pyenchant==3.2.*
+pyenchant==3.3.*

pyproject.toml

@@ -28,71 +28,71 @@ classifiers = [
 dependencies = [
   "arabic-reshaper==3.0.0",  # Support for Arabic in reportlab
   "babel",
-  "BeautifulSoup4==4.13.*",
+  "BeautifulSoup4==4.14.*",
   "bleach==6.2.*",
-  "celery==5.4.*",
+  "celery==5.5.*",
   "chardet==5.2.*",
   "cryptography>=44.0.0",
-  "css-inline==0.14.*",
+  "css-inline==0.18.*",
   "defusedcsv>=1.1.0",
-  "Django[argon2]==4.2.*,>=4.2.15",
-  "django-bootstrap3==25.1",
+  "Django[argon2]==4.2.*,>=4.2.26",
+  "django-bootstrap3==25.2",
   "django-compressor==4.5.1",
   "django-countries==7.6.*",
   "django-filter==25.1",
-  "django-formset-js-improved==0.5.0.3",
+  "django-formset-js-improved==0.5.0.4",
   "django-formtools==2.5.1",
-  "django-hierarkey==1.2.*",
+  "django-hierarkey==2.0.*,>=2.0.1",
   "django-hijack==3.7.*",
-  "django-i18nfield==1.10.*",
+  "django-i18nfield==1.11.*",
   "django-libsass==0.9",
-  "django-localflavor==4.0",
+  "django-localflavor==5.0",
   "django-markup",
   "django-oauth-toolkit==2.3.*",
-  "django-otp==1.5.*",
+  "django-otp==1.6.*",
   "django-phonenumber-field==7.3.*",
-  "django-redis==5.4.*",
+  "django-redis==6.0.*",
   "django-scopes==2.0.*",
   "django-statici18n==2.6.*",
-  "djangorestframework==3.15.*",
+  "djangorestframework==3.16.*",
   "dnspython==2.7.*",
   "drf_ujson2==1.7.*",
   "geoip2==5.*",
   "importlib_metadata==8.*",  # Polyfill, we can probably drop this once we require Python 3.10+
   "isoweek",
   "jsonschema",
-  "kombu==5.4.*",
+  "kombu==5.5.*",
   "libsass==0.23.*",
   "lxml",
-  "markdown==3.7",  # 3.3.5 requires importlib-metadata>=4.4, but django-bootstrap3 requires importlib-metadata<3.
+  "markdown==3.9",  # 3.3.5 requires importlib-metadata>=4.4, but django-bootstrap3 requires importlib-metadata<3.
   # We can upgrade markdown again once django-bootstrap3 upgrades or once we drop Python 3.6 and 3.7
   "mt-940==4.30.*",
-  "oauthlib==3.2.*",
+  "oauthlib==3.3.*",
   "openpyxl==3.1.*",
   "packaging",
   "paypalrestsdk==1.13.*",
   "paypal-checkout-serversdk==1.0.*",
   "PyJWT==2.10.*",
-  "phonenumberslite==8.13.*",
-  "Pillow==11.1.*",
+  "phonenumberslite==9.0.*",
+  "Pillow==11.3.*",
   "pretix-plugin-build",
-  "protobuf==5.29.*",
+  "protobuf==6.33.*",
   "psycopg2-binary",
   "pycountry",
-  "pycparser==2.22",
-  "pycryptodome==3.21.*",
-  "pypdf==5.1.*",
+  "pycparser==2.23",
+  "pycryptodome==3.23.*",
+  "pypdf==6.3.*",
   "python-bidi==0.6.*",  # Support for Arabic in reportlab
   "python-dateutil==2.9.*",
   "pytz",
   "pytz-deprecation-shim==0.1.*",
   "pyuca",
-  "qrcode==8.0",
-  "redis==5.2.*",
-  "reportlab==4.3.*",
-  "requests==2.31.*",
-  "sentry-sdk==2.22.*",
-  "sepaxml==2.6.*",
+  "qrcode==8.2",
+  "redis==6.4.*",
+  "reportlab==4.4.*",
+  "requests==2.32.*",
+  "sentry-sdk==2.45.*",
+  "sepaxml==2.7.*",
   "stripe==7.9.*",
   "text-unidecode==1.*",
   "tlds>=2020041600",
@@ -100,30 +100,30 @@ dependencies = [
   "ua-parser==1.0.*",
   "vat_moss_forked==2020.3.20.0.11.0",
   "vobject==0.9.*",
-  "webauthn==2.5.*",
+  "webauthn==2.7.*",
   "zeep==4.3.*"
 ]
 
 [project.optional-dependencies]
 memcached = ["pylibmc"]
 dev = [
-  "aiohttp==3.11.*",
+  "aiohttp==3.13.*",
   "coverage",
   "coveralls",
-  "fakeredis==2.26.*",
-  "flake8==7.1.*",
+  "fakeredis==2.32.*",
+  "flake8==7.3.*",
   "freezegun",
-  "isort==6.0.*",
-  "pep8-naming==0.14.*",
+  "isort==6.1.*",
+  "pep8-naming==0.15.*",
   "potypo",
   "pytest-asyncio>=0.24",
   "pytest-cache",
   "pytest-cov",
   "pytest-django==4.*",
-  "pytest-mock==3.14.*",
+  "pytest-mock==3.15.*",
   "pytest-sugar",
-  "pytest-xdist==3.6.*",
-  "pytest==8.3.*",
+  "pytest-xdist==3.8.*",
+  "pytest==8.4.*",
   "responses",
 ]
 

src/Makefile

@@ -25,8 +25,8 @@ coverage:
 	coverage run -m py.test
 
 npminstall:
-	# keep this in sync with setup.py!
+	# keep this in sync with pretix/_build.py!
 	mkdir -p pretix/static.dist/node_prefix/
 	cp -r pretix/static/npm_dir/* pretix/static.dist/node_prefix/
-	npm install --prefix=pretix/static.dist/node_prefix
+	npm ci --prefix=pretix/static.dist/node_prefix
 

src/manage.py

@@ -2,8 +2,8 @@
 #
 # This file is part of pretix (Community Edition).
 #
-# Copyright (C) 2014-2020 Raphael Michel and contributors
-# Copyright (C) 2020-2021 rami.io GmbH and contributors
+# Copyright (C) 2014-2020  Raphael Michel and contributors
+# Copyright (C) 2020-today pretix GmbH and contributors
 #
 # This program is free software: you can redistribute it and/or modify it under the terms of the GNU Affero General
 # Public License as published by the Free Software Foundation in version 3 of the License.

src/pretix/__init__.py

@@ -1,8 +1,8 @@
 #
 # This file is part of pretix (Community Edition).
 #
-# Copyright (C) 2014-2020 Raphael Michel and contributors
-# Copyright (C) 2020-2021 rami.io GmbH and contributors
+# Copyright (C) 2014-2020  Raphael Michel and contributors
+# Copyright (C) 2020-today pretix GmbH and contributors
 #
 # This program is free software: you can redistribute it and/or modify it under the terms of the GNU Affero General
 # Public License as published by the Free Software Foundation in version 3 of the License.
@@ -19,4 +19,4 @@
 # You should have received a copy of the GNU Affero General Public License along with this program.  If not, see
 # <https://www.gnu.org/licenses/>.
 #
-__version__ = "2025.3.0.dev0"
+__version__ = "2025.10.0.dev0"

src/pretix/__main__.py

@@ -1,8 +1,8 @@
 #
 # This file is part of pretix (Community Edition).
 #
-# Copyright (C) 2014-2020 Raphael Michel and contributors
-# Copyright (C) 2020-2021 rami.io GmbH and contributors
+# Copyright (C) 2014-2020  Raphael Michel and contributors
+# Copyright (C) 2020-today pretix GmbH and contributors
 #
 # This program is free software: you can redistribute it and/or modify it under the terms of the GNU Affero General
 # Public License as published by the Free Software Foundation in version 3 of the License.

src/pretix/_base_settings.py

@@ -1,8 +1,8 @@
 #
 # This file is part of pretix (Community Edition).
 #
-# Copyright (C) 2014-2020 Raphael Michel and contributors
-# Copyright (C) 2020-2021 rami.io GmbH and contributors
+# Copyright (C) 2014-2020  Raphael Michel and contributors
+# Copyright (C) 2020-today pretix GmbH and contributors
 #
 # This program is free software: you can redistribute it and/or modify it under the terms of the GNU Affero General
 # Public License as published by the Free Software Foundation in version 3 of the License.
@@ -101,6 +101,7 @@ ALL_LANGUAGES = [
     ('fi', _('Finnish')),
     ('gl', _('Galician')),
     ('el', _('Greek')),
+    ('he', _('Hebrew')),
     ('id', _('Indonesian')),
     ('it', _('Italian')),
     ('ja', _('Japanese')),
@@ -114,6 +115,7 @@ ALL_LANGUAGES = [
     ('sk', _('Slovak')),
     ('sv', _('Swedish')),
     ('es', _('Spanish')),
+    ('es-419', _('Spanish (Latin America)')),
     ('tr', _('Turkish')),
     ('uk', _('Ukrainian')),
 ]
@@ -121,7 +123,8 @@ LANGUAGES_OFFICIAL = {
     'en', 'de', 'de-informal'
 }
 LANGUAGES_RTL = {
-    'ar', 'hw'
+    # When adding more right-to-left languages, also update pretix/static/pretixbase/scss/_rtl.scss
+    'ar', 'he'
 }
 LANGUAGES_INCUBATING = {
     'pt-br', 'gl',
@@ -170,6 +173,12 @@ EXTRA_LANG_INFO = {
         'name': 'Norwegian Bokmal',
         'name_local': 'norsk (bokmål)',
     },
+    'es-419': {
+        'bidi': False,
+        'code': 'es-419',
+        'name': 'Spanish (Latin America)',
+        'name_local': 'Español',
+    },
 }
 
 django.conf.locale.LANG_INFO.update(EXTRA_LANG_INFO)

src/pretix/_build.py

@@ -1,8 +1,8 @@
 #
 # This file is part of pretix (Community Edition).
 #
-# Copyright (C) 2014-2020 Raphael Michel and contributors
-# Copyright (C) 2020-2021 rami.io GmbH and contributors
+# Copyright (C) 2014-2020  Raphael Michel and contributors
+# Copyright (C) 2020-today pretix GmbH and contributors
 #
 # This program is free software: you can redistribute it and/or modify it under the terms of the GNU Affero General
 # Public License as published by the Free Software Foundation in version 3 of the License.
@@ -39,7 +39,7 @@ def npm_install():
         node_prefix = os.path.join(here, 'static.dist', 'node_prefix')
         os.makedirs(node_prefix, exist_ok=True)
         shutil.copytree(os.path.join(here, 'static', 'npm_dir'), node_prefix, dirs_exist_ok=True)
-        subprocess.check_call('npm install', shell=True, cwd=node_prefix)
+        subprocess.check_call('npm ci', shell=True, cwd=node_prefix)
         npm_installed = True
 
 

src/pretix/_build_settings.py

@@ -1,8 +1,8 @@
 #
 # This file is part of pretix (Community Edition).
 #
-# Copyright (C) 2014-2020 Raphael Michel and contributors
-# Copyright (C) 2020-2021 rami.io GmbH and contributors
+# Copyright (C) 2014-2020  Raphael Michel and contributors
+# Copyright (C) 2020-today pretix GmbH and contributors
 #
 # This program is free software: you can redistribute it and/or modify it under the terms of the GNU Affero General
 # Public License as published by the Free Software Foundation in version 3 of the License.

src/pretix/api/__init__.py

@@ -1,8 +1,8 @@
 #
 # This file is part of pretix (Community Edition).
 #
-# Copyright (C) 2014-2020 Raphael Michel and contributors
-# Copyright (C) 2020-2021 rami.io GmbH and contributors
+# Copyright (C) 2014-2020  Raphael Michel and contributors
+# Copyright (C) 2020-today pretix GmbH and contributors
 #
 # This program is free software: you can redistribute it and/or modify it under the terms of the GNU Affero General
 # Public License as published by the Free Software Foundation in version 3 of the License.

src/pretix/api/apps.py

@@ -1,8 +1,8 @@
 #
 # This file is part of pretix (Community Edition).
 #
-# Copyright (C) 2014-2020 Raphael Michel and contributors
-# Copyright (C) 2020-2021 rami.io GmbH and contributors
+# Copyright (C) 2014-2020  Raphael Michel and contributors
+# Copyright (C) 2020-today pretix GmbH and contributors
 #
 # This program is free software: you can redistribute it and/or modify it under the terms of the GNU Affero General
 # Public License as published by the Free Software Foundation in version 3 of the License.

src/pretix/api/auth/__init__.py

@@ -1,8 +1,8 @@
 #
 # This file is part of pretix (Community Edition).
 #
-# Copyright (C) 2014-2020 Raphael Michel and contributors
-# Copyright (C) 2020-2021 rami.io GmbH and contributors
+# Copyright (C) 2014-2020  Raphael Michel and contributors
+# Copyright (C) 2020-today pretix GmbH and contributors
 #
 # This program is free software: you can redistribute it and/or modify it under the terms of the GNU Affero General
 # Public License as published by the Free Software Foundation in version 3 of the License.

src/pretix/api/auth/device.py

@@ -1,8 +1,8 @@
 #
 # This file is part of pretix (Community Edition).
 #
-# Copyright (C) 2014-2020 Raphael Michel and contributors
-# Copyright (C) 2020-2021 rami.io GmbH and contributors
+# Copyright (C) 2014-2020  Raphael Michel and contributors
+# Copyright (C) 2020-today pretix GmbH and contributors
 #
 # This program is free software: you can redistribute it and/or modify it under the terms of the GNU Affero General
 # Public License as published by the Free Software Foundation in version 3 of the License.

src/pretix/api/auth/devicesecurity.py

@@ -1,8 +1,8 @@
 #
 # This file is part of pretix (Community Edition).
 #
-# Copyright (C) 2014-2020 Raphael Michel and contributors
-# Copyright (C) 2020-2021 rami.io GmbH and contributors
+# Copyright (C) 2014-2020  Raphael Michel and contributors
+# Copyright (C) 2020-today pretix GmbH and contributors
 #
 # This program is free software: you can redistribute it and/or modify it under the terms of the GNU Affero General
 # Public License as published by the Free Software Foundation in version 3 of the License.

src/pretix/api/auth/permission.py

@@ -1,8 +1,8 @@
 #
 # This file is part of pretix (Community Edition).
 #
-# Copyright (C) 2014-2020 Raphael Michel and contributors
-# Copyright (C) 2020-2021 rami.io GmbH and contributors
+# Copyright (C) 2014-2020  Raphael Michel and contributors
+# Copyright (C) 2020-today pretix GmbH and contributors
 #
 # This program is free software: you can redistribute it and/or modify it under the terms of the GNU Affero General
 # Public License as published by the Free Software Foundation in version 3 of the License.

src/pretix/api/auth/session.py

@@ -1,8 +1,8 @@
 #
 # This file is part of pretix (Community Edition).
 #
-# Copyright (C) 2014-2020 Raphael Michel and contributors
-# Copyright (C) 2020-2021 rami.io GmbH and contributors
+# Copyright (C) 2014-2020  Raphael Michel and contributors
+# Copyright (C) 2020-today pretix GmbH and contributors
 #
 # This program is free software: you can redistribute it and/or modify it under the terms of the GNU Affero General
 # Public License as published by the Free Software Foundation in version 3 of the License.

src/pretix/api/auth/token.py

@@ -1,8 +1,8 @@
 #
 # This file is part of pretix (Community Edition).
 #
-# Copyright (C) 2014-2020 Raphael Michel and contributors
-# Copyright (C) 2020-2021 rami.io GmbH and contributors
+# Copyright (C) 2014-2020  Raphael Michel and contributors
+# Copyright (C) 2020-today pretix GmbH and contributors
 #
 # This program is free software: you can redistribute it and/or modify it under the terms of the GNU Affero General
 # Public License as published by the Free Software Foundation in version 3 of the License.

src/pretix/api/exception.py

@@ -1,8 +1,8 @@
 #
 # This file is part of pretix (Community Edition).
 #
-# Copyright (C) 2014-2020 Raphael Michel and contributors
-# Copyright (C) 2020-2021 rami.io GmbH and contributors
+# Copyright (C) 2014-2020  Raphael Michel and contributors
+# Copyright (C) 2020-today pretix GmbH and contributors
 #
 # This program is free software: you can redistribute it and/or modify it under the terms of the GNU Affero General
 # Public License as published by the Free Software Foundation in version 3 of the License.

src/pretix/api/filters.py

@@ -1,8 +1,8 @@
 #
 # This file is part of pretix (Community Edition).
 #
-# Copyright (C) 2014-2020 Raphael Michel and contributors
-# Copyright (C) 2020-2021 rami.io GmbH and contributors
+# Copyright (C) 2014-2020  Raphael Michel and contributors
+# Copyright (C) 2020-today pretix GmbH and contributors
 #
 # This program is free software: you can redistribute it and/or modify it under the terms of the GNU Affero General
 # Public License as published by the Free Software Foundation in version 3 of the License.

src/pretix/api/middleware.py

@@ -1,8 +1,8 @@
 #
 # This file is part of pretix (Community Edition).
 #
-# Copyright (C) 2014-2020 Raphael Michel and contributors
-# Copyright (C) 2020-2021 rami.io GmbH and contributors
+# Copyright (C) 2014-2020  Raphael Michel and contributors
+# Copyright (C) 2020-today pretix GmbH and contributors
 #
 # This program is free software: you can redistribute it and/or modify it under the terms of the GNU Affero General
 # Public License as published by the Free Software Foundation in version 3 of the License.

src/pretix/api/migrations/0013_alter_webhookcallretry_retry_not_before.py

@@ -0,0 +1,18 @@
+# Generated by Django 4.2.17 on 2025-06-24 14:13
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ("pretixapi", "0012_oauthapplication_post_logout_redirect_uris"),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name="webhookcallretry",
+            name="retry_not_before",
+            field=models.DateTimeField(),
+        ),
+    ]

src/pretix/api/migrations/0014_alter_webhook_target_url_and_more.py

@@ -0,0 +1,23 @@
+# Generated by Django 4.2.24 on 2025-11-14 16:21
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ("pretixapi", "0013_alter_webhookcallretry_retry_not_before"),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name="webhook",
+            name="target_url",
+            field=models.URLField(max_length=1024),
+        ),
+        migrations.AlterField(
+            model_name="webhookcall",
+            name="target_url",
+            field=models.URLField(max_length=1024),
+        ),
+    ]

src/pretix/api/models.py

@@ -1,8 +1,8 @@
 #
 # This file is part of pretix (Community Edition).
 #
-# Copyright (C) 2014-2020 Raphael Michel and contributors
-# Copyright (C) 2020-2021 rami.io GmbH and contributors
+# Copyright (C) 2014-2020  Raphael Michel and contributors
+# Copyright (C) 2020-today pretix GmbH and contributors
 #
 # This program is free software: you can redistribute it and/or modify it under the terms of the GNU Affero General
 # Public License as published by the Free Software Foundation in version 3 of the License.
@@ -114,7 +114,7 @@ class OAuthRefreshToken(AbstractRefreshToken):
 class WebHook(models.Model):
     organizer = models.ForeignKey('pretixbase.Organizer', on_delete=models.CASCADE, related_name='webhooks')
     enabled = models.BooleanField(default=True, verbose_name=_("Enable webhook"))
-    target_url = models.URLField(verbose_name=_("Target URL"), max_length=255)
+    target_url = models.URLField(verbose_name=_("Target URL"), max_length=1024)
     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)
     comment = models.CharField(verbose_name=_("Comment"), max_length=255, null=True, blank=True)
@@ -140,7 +140,7 @@ class WebHookEventListener(models.Model):
 class WebHookCall(models.Model):
     webhook = models.ForeignKey('WebHook', on_delete=models.CASCADE, related_name='calls')
     datetime = models.DateTimeField(auto_now_add=True)
-    target_url = models.URLField(max_length=255)
+    target_url = models.URLField(max_length=1024)
     action_type = models.CharField(max_length=255)
     is_retry = models.BooleanField(default=False)
     execution_time = models.FloatField(null=True)
@@ -157,7 +157,7 @@ class WebHookCallRetry(models.Model):
     id = models.BigAutoField(primary_key=True)
     webhook = models.ForeignKey('WebHook', on_delete=models.CASCADE, related_name='retries')
     logentry = models.ForeignKey('pretixbase.LogEntry', on_delete=models.CASCADE, related_name='webhook_retries')
-    retry_not_before = models.DateTimeField(auto_now_add=True)
+    retry_not_before = models.DateTimeField()
     retry_count = models.PositiveIntegerField(default=0)
     action_type = models.CharField(max_length=255)
 

src/pretix/api/oauth.py

@@ -1,8 +1,8 @@
 #
 # This file is part of pretix (Community Edition).
 #
-# Copyright (C) 2014-2020 Raphael Michel and contributors
-# Copyright (C) 2020-2021 rami.io GmbH and contributors
+# Copyright (C) 2014-2020  Raphael Michel and contributors
+# Copyright (C) 2020-today pretix GmbH and contributors
 #
 # This program is free software: you can redistribute it and/or modify it under the terms of the GNU Affero General
 # Public License as published by the Free Software Foundation in version 3 of the License.

src/pretix/api/pagination.py

@@ -1,8 +1,8 @@
 #
 # This file is part of pretix (Community Edition).
 #
-# Copyright (C) 2014-2020 Raphael Michel and contributors
-# Copyright (C) 2020-2021 rami.io GmbH and contributors
+# Copyright (C) 2014-2020  Raphael Michel and contributors
+# Copyright (C) 2020-today pretix GmbH and contributors
 #
 # This program is free software: you can redistribute it and/or modify it under the terms of the GNU Affero General
 # Public License as published by the Free Software Foundation in version 3 of the License.

src/pretix/api/serializers/__init__.py

@@ -1,8 +1,8 @@
 #
 # This file is part of pretix (Community Edition).
 #
-# Copyright (C) 2014-2020 Raphael Michel and contributors
-# Copyright (C) 2020-2021 rami.io GmbH and contributors
+# Copyright (C) 2014-2020  Raphael Michel and contributors
+# Copyright (C) 2020-today pretix GmbH and contributors
 #
 # This program is free software: you can redistribute it and/or modify it under the terms of the GNU Affero General
 # Public License as published by the Free Software Foundation in version 3 of the License.
@@ -81,6 +81,13 @@ class SalesChannelMigrationMixin:
 
     def to_internal_value(self, data):
         if "sales_channels" in data:
+            if data["sales_channels"] is None:
+                raise ValidationError({
+                    "sales_channels": [
+                        "The legacy attribute 'sales_channels' cannot be set to None, it must be a list."
+                    ]
+                })
+
             prefetch_related_objects([self.organizer], "sales_channels")
             all_channels = {
                 s.identifier for s in
@@ -89,7 +96,7 @@ class SalesChannelMigrationMixin:
 
             if data.get("all_sales_channels") and set(data["sales_channels"]) != all_channels:
                 raise ValidationError({
-                    "limit_sales_channels": [
+                    "all_sales_channels": [
                         "If 'all_sales_channels' is set, the legacy attribute 'sales_channels' must not be set or set to "
                         "the list of all sales channels."
                     ]
@@ -109,6 +116,7 @@ class SalesChannelMigrationMixin:
             else:
                 data["all_sales_channels"] = False
                 data["limit_sales_channels"] = data["sales_channels"]
+
             del data["sales_channels"]
 
         if data.get("all_sales_channels"):

src/pretix/api/serializers/cart.py

@@ -1,8 +1,8 @@
 #
 # This file is part of pretix (Community Edition).
 #
-# Copyright (C) 2014-2020 Raphael Michel and contributors
-# Copyright (C) 2020-2021 rami.io GmbH and contributors
+# Copyright (C) 2014-2020  Raphael Michel and contributors
+# Copyright (C) 2020-today pretix GmbH and contributors
 #
 # This program is free software: you can redistribute it and/or modify it under the terms of the GNU Affero General
 # Public License as published by the Free Software Foundation in version 3 of the License.
@@ -176,7 +176,7 @@ class BaseCartPositionCreateSerializer(I18nAwareModelSerializer):
 
     def create(self, validated_data):
         validated_data.pop('_quotas')
-        answers_data = validated_data.pop('answers')
+        answers_data = validated_data.pop('answers', [])
 
         attendee_name = validated_data.pop('attendee_name', '')
         if attendee_name and not validated_data.get('attendee_name_parts'):

src/pretix/api/serializers/checkin.py

@@ -1,8 +1,8 @@
 #
 # This file is part of pretix (Community Edition).
 #
-# Copyright (C) 2014-2020 Raphael Michel and contributors
-# Copyright (C) 2020-2021 rami.io GmbH and contributors
+# Copyright (C) 2014-2020  Raphael Michel and contributors
+# Copyright (C) 2020-today pretix GmbH and contributors
 #
 # This program is free software: you can redistribute it and/or modify it under the terms of the GNU Affero General
 # Public License as published by the Free Software Foundation in version 3 of the License.
@@ -84,6 +84,7 @@ class CheckinRPCRedeemInputSerializer(serializers.Serializer):
     type = serializers.ChoiceField(choices=Checkin.CHECKIN_TYPES, default=Checkin.TYPE_ENTRY)
     ignore_unpaid = serializers.BooleanField(default=False, required=False)
     questions_supported = serializers.BooleanField(default=True, required=False)
+    use_order_locale = serializers.BooleanField(default=False, required=False)
     nonce = serializers.CharField(required=False, allow_null=True)
     datetime = serializers.DateTimeField(required=False, allow_null=True)
     answers = serializers.JSONField(required=False, allow_null=True)
@@ -103,3 +104,14 @@ class MiniCheckinListSerializer(I18nAwareModelSerializer):
 
     def __init__(self, *args, **kwargs):
         super().__init__(*args, **kwargs)
+
+
+class CheckinRPCAnnulInputSerializer(serializers.Serializer):
+    lists = serializers.PrimaryKeyRelatedField(required=True, many=True, queryset=CheckinList.objects.none())
+    nonce = serializers.CharField(required=True, allow_null=False)
+    datetime = serializers.DateTimeField(required=False, allow_null=True)
+    error_explanation = serializers.CharField(required=False, allow_null=True)
+
+    def __init__(self, *args, **kwargs):
+        super().__init__(*args, **kwargs)
+        self.fields['lists'].child_relation.queryset = CheckinList.objects.filter(event__in=self.context['events']).select_related('event')

src/pretix/api/serializers/discount.py

@@ -1,8 +1,8 @@
 #
 # This file is part of pretix (Community Edition).
 #
-# Copyright (C) 2014-2020 Raphael Michel and contributors
-# Copyright (C) 2020-2021 rami.io GmbH and contributors
+# Copyright (C) 2014-2020  Raphael Michel and contributors
+# Copyright (C) 2020-today pretix GmbH and contributors
 #
 # This program is free software: you can redistribute it and/or modify it under the terms of the GNU Affero General
 # Public License as published by the Free Software Foundation in version 3 of the License.
@@ -38,11 +38,12 @@ class DiscountSerializer(SalesChannelMigrationMixin, I18nAwareModelSerializer):
     class Meta:
         model = Discount
         fields = ('id', 'active', 'internal_name', 'position', 'all_sales_channels', 'limit_sales_channels',
-                  'available_from', 'available_until', 'subevent_mode', 'condition_all_products',
-                  'condition_limit_products', 'condition_apply_to_addons', 'condition_min_count', 'condition_min_value',
-                  'benefit_discount_matching_percent', 'benefit_only_apply_to_cheapest_n_matches',
-                  'benefit_same_products', 'benefit_limit_products', 'benefit_apply_to_addons',
-                  'benefit_ignore_voucher_discounted', 'condition_ignore_voucher_discounted')
+                  'available_from', 'available_until', 'subevent_mode', 'subevent_date_from', 'subevent_date_until',
+                  'condition_all_products', 'condition_limit_products', 'condition_apply_to_addons',
+                  'condition_min_count', 'condition_min_value', 'benefit_discount_matching_percent',
+                  'benefit_only_apply_to_cheapest_n_matches', 'benefit_same_products', 'benefit_limit_products',
+                  'benefit_apply_to_addons', 'benefit_ignore_voucher_discounted',
+                  'condition_ignore_voucher_discounted')
 
     def __init__(self, *args, **kwargs):
         super().__init__(*args, **kwargs)

src/pretix/api/serializers/event.py

@@ -1,8 +1,8 @@
 #
 # This file is part of pretix (Community Edition).
 #
-# Copyright (C) 2014-2020 Raphael Michel and contributors
-# Copyright (C) 2020-2021 rami.io GmbH and contributors
+# Copyright (C) 2014-2020  Raphael Michel and contributors
+# Copyright (C) 2020-today pretix GmbH and contributors
 #
 # This program is free software: you can redistribute it and/or modify it under the terms of the GNU Affero General
 # Public License as published by the Free Software Foundation in version 3 of the License.
@@ -50,6 +50,7 @@ from rest_framework.relations import SlugRelatedField
 from pretix.api.serializers import (
     CompatibleJSONField, SalesChannelMigrationMixin,
 )
+from pretix.api.serializers.fields import PluginsField
 from pretix.api.serializers.i18n import I18nAwareModelSerializer
 from pretix.api.serializers.settings import SettingsSerializer
 from pretix.base.models import (
@@ -61,6 +62,9 @@ from pretix.base.models.items import (
     ItemMetaProperty, SubEventItem, SubEventItemVariation,
 )
 from pretix.base.models.tax import CustomRulesValidator
+from pretix.base.plugins import (
+    PLUGIN_LEVEL_EVENT, PLUGIN_LEVEL_EVENT_ORGANIZER_HYBRID,
+)
 from pretix.base.services.seating import (
     SeatProtected, generate_seats, validate_plan_change,
 )
@@ -126,22 +130,6 @@ class SeatCategoryMappingField(Field):
         }
 
 
-class PluginsField(Field):
-
-    def to_representation(self, obj):
-        from pretix.base.plugins import get_all_plugins
-
-        return sorted([
-            p.module for p in get_all_plugins()
-            if not p.name.startswith('.') and getattr(p, 'visible', True) and p.module in obj.get_plugins()
-        ])
-
-    def to_internal_value(self, data):
-        return {
-            'plugins': data
-        }
-
-
 class TimeZoneField(ChoiceField):
     def get_attribute(self, instance):
         return instance.cache.get_or_set(
@@ -283,17 +271,28 @@ class EventSerializer(SalesChannelMigrationMixin, I18nAwareModelSerializer):
         from pretix.base.plugins import get_all_plugins
 
         plugins_available = {
-            p.module: p for p in get_all_plugins(self.instance)
+            p.module: p for p in get_all_plugins(event=self.instance)
             if not p.name.startswith('.') and getattr(p, 'visible', True)
         }
+        current_plugins = self.instance.get_plugins() if self.instance and self.instance.pk else []
         settings_holder = self.instance if self.instance and self.instance.pk else self.context['organizer']
 
+        allowed_levels = (PLUGIN_LEVEL_EVENT, PLUGIN_LEVEL_EVENT_ORGANIZER_HYBRID)
         for plugin in value.get('plugins'):
             if plugin not in plugins_available:
                 raise ValidationError(_('Unknown plugin: \'{name}\'.').format(name=plugin))
             if getattr(plugins_available[plugin], 'restricted', False):
                 if plugin not in settings_holder.settings.allowed_restricted_plugins:
                     raise ValidationError(_('Restricted plugin: \'{name}\'.').format(name=plugin))
+            level = getattr(plugins_available[plugin], 'level', PLUGIN_LEVEL_EVENT)
+            if level not in allowed_levels:
+                raise ValidationError('Plugin cannot be enabled on this level: \'{name}\'.'.format(name=plugin))
+
+            if level == PLUGIN_LEVEL_EVENT_ORGANIZER_HYBRID and plugin not in self.context['organizer'].get_plugins():
+                if plugin not in current_plugins:
+                    # Technically, this is allowed, but consumers might be confused if the API call doesn't do anything
+                    # so we prevent this change.
+                    raise ValidationError('Plugin should be enabled on organizer level first: \'{name}\'.'.format(name=plugin))
 
         return value
 
@@ -378,6 +377,8 @@ class EventSerializer(SalesChannelMigrationMixin, I18nAwareModelSerializer):
                     if prop.name not in meta_data:
                         current_object.delete()
 
+            instance._prefetched_objects_cache.clear()
+
         # Item Meta properties
         if item_meta_properties is not None:
             current = list(event.item_meta_properties.all())
@@ -398,6 +399,8 @@ class EventSerializer(SalesChannelMigrationMixin, I18nAwareModelSerializer):
                 if prop.name not in list(item_meta_properties.keys()):
                     prop.delete()
 
+            instance._prefetched_objects_cache.clear()
+
         # Seats
         if seat_category_mapping is not None or ('seating_plan' in validated_data and validated_data['seating_plan'] is None):
             current_mappings = {
@@ -681,8 +684,26 @@ class TaxRuleSerializer(CountryFieldMixin, I18nAwareModelSerializer):
 
     class Meta:
         model = TaxRule
-        fields = ('id', 'name', 'rate', 'code', 'price_includes_tax', 'eu_reverse_charge', 'home_country',
-                  'internal_name', 'keep_gross_if_rate_changes', 'custom_rules')
+        fields = ('id', 'name', 'default', 'rate', 'code', 'price_includes_tax', 'eu_reverse_charge', 'home_country',
+                  'internal_name', 'keep_gross_if_rate_changes', 'custom_rules', 'default')
+
+    def create(self, validated_data):
+        if "default" not in validated_data and not self.context["event"].tax_rules.exists():
+            validated_data["default"] = True
+        return super().create(validated_data)
+
+    def save(self, **kwargs):
+        if self.validated_data.get("default"):
+            if self.instance and self.instance.pk:
+                self.context["event"].tax_rules.exclude(pk=self.instance.pk).update(default=False)
+            else:
+                self.context["event"].tax_rules.update(default=False)
+        return super().save(**kwargs)
+
+    def validate_default(self, value):
+        if not value and self.instance.default:
+            raise ValidationError("You can't remove the default property, instead set it on another tax rule.")
+        return value
 
 
 class EventSettingsSerializer(SettingsSerializer):
@@ -708,6 +729,8 @@ class EventSettingsSerializer(SettingsSerializer):
         'allow_modifications_after_checkin',
         'last_order_modification_date',
         'show_quota_left',
+        'tax_rule_payment',
+        'tax_rule_cancellation',
         'waiting_list_enabled',
         'waiting_list_auto_disable',
         'waiting_list_hours',
@@ -782,6 +805,7 @@ class EventSettingsSerializer(SettingsSerializer):
         'invoice_reissue_after_modify',
         'invoice_include_free',
         'invoice_generate',
+        'invoice_period',
         'invoice_numbers_consecutive',
         'invoice_numbers_prefix',
         'invoice_numbers_prefix_cancellations',
@@ -796,6 +820,7 @@ class EventSettingsSerializer(SettingsSerializer):
         'invoice_address_from',
         'invoice_address_from_zipcode',
         'invoice_address_from_city',
+        'invoice_address_from_state',
         'invoice_address_from_country',
         'invoice_address_from_tax_id',
         'invoice_address_from_vat_id',
@@ -805,6 +830,7 @@ class EventSettingsSerializer(SettingsSerializer):
         'invoice_eu_currencies',
         'invoice_logo_image',
         'invoice_renderer_highlight_order_code',
+        'tax_rounding',
         'cancel_allow_user',
         'cancel_allow_user_until',
         'cancel_allow_user_unpaid_keep',
@@ -927,6 +953,7 @@ class DeviceEventSettingsSerializer(EventSettingsSerializer):
         'invoice_address_from',
         'invoice_address_from_zipcode',
         'invoice_address_from_city',
+        'invoice_address_from_state',
         'invoice_address_from_country',
         'invoice_address_from_tax_id',
         'invoice_address_from_vat_id',
@@ -938,6 +965,8 @@ class DeviceEventSettingsSerializer(EventSettingsSerializer):
         'reusable_media_type_nfc_mf0aes',
         'reusable_media_type_nfc_mf0aes_random_uid',
         'system_question_order',
+        'tax_rule_payment',
+        'tax_rule_cancellation',
     ]
 
     def __init__(self, *args, **kwargs):

src/pretix/api/serializers/exporters.py

@@ -1,8 +1,8 @@
 #
 # This file is part of pretix (Community Edition).
 #
-# Copyright (C) 2014-2020 Raphael Michel and contributors
-# Copyright (C) 2020-2021 rami.io GmbH and contributors
+# Copyright (C) 2014-2020  Raphael Michel and contributors
+# Copyright (C) 2020-today pretix GmbH and contributors
 #
 # This program is free software: you can redistribute it and/or modify it under the terms of the GNU Affero General
 # Public License as published by the Free Software Foundation in version 3 of the License.
@@ -19,45 +19,16 @@
 # You should have received a copy of the GNU Affero General Public License along with this program.  If not, see
 # <https://www.gnu.org/licenses/>.
 #
-from django import forms
 from django.conf import settings
 from django.http import QueryDict
 from pytz import common_timezones
 from rest_framework import serializers
 from rest_framework.exceptions import ValidationError
 
+from pretix.api.serializers.forms import form_field_to_serializer_field
 from pretix.base.exporter import OrganizerLevelExportMixin
 from pretix.base.models import ScheduledEventExport, ScheduledOrganizerExport
-from pretix.base.timeframes import DateFrameField, SerializerDateFrameField
-
-
-class FormFieldWrapperField(serializers.Field):
-    def __init__(self, *args, **kwargs):
-        self.form_field = kwargs.pop('form_field')
-        super().__init__(*args, **kwargs)
-
-    def to_representation(self, value):
-        return self.form_field.widget.format_value(value)
-
-    def to_internal_value(self, data):
-        d = self.form_field.widget.value_from_datadict({'name': data}, {}, 'name')
-        d = self.form_field.clean(d)
-        return d
-
-
-simple_mappings = (
-    (forms.DateField, serializers.DateField, ()),
-    (forms.TimeField, serializers.TimeField, ()),
-    (forms.SplitDateTimeField, serializers.DateTimeField, ()),
-    (forms.DateTimeField, serializers.DateTimeField, ()),
-    (forms.DecimalField, serializers.DecimalField, ('max_digits', 'decimal_places', 'min_value', 'max_value')),
-    (forms.FloatField, serializers.FloatField, ()),
-    (forms.IntegerField, serializers.IntegerField, ()),
-    (forms.EmailField, serializers.EmailField, ()),
-    (forms.UUIDField, serializers.UUIDField, ()),
-    (forms.URLField, serializers.URLField, ()),
-    (forms.BooleanField, serializers.BooleanField, ()),
-)
+from pretix.base.timeframes import SerializerDateFrameField
 
 
 class SerializerDescriptionField(serializers.Field):
@@ -81,13 +52,6 @@ class ExporterSerializer(serializers.Serializer):
     input_parameters = SerializerDescriptionField(source='_serializer')
 
 
-class PrimaryKeyRelatedField(serializers.PrimaryKeyRelatedField):
-    def to_representation(self, value):
-        if isinstance(value, int):
-            return value
-        return super().to_representation(value)
-
-
 class JobRunSerializer(serializers.Serializer):
     def __init__(self, *args, **kwargs):
         ex = kwargs.pop('exporter')
@@ -102,59 +66,7 @@ class JobRunSerializer(serializers.Serializer):
                 many=True
             )
         for k, v in ex.export_form_fields.items():
-            for m_from, m_to, m_kwargs in simple_mappings:
-                if isinstance(v, m_from):
-                    self.fields[k] = m_to(
-                        required=v.required,
-                        allow_null=not v.required,
-                        validators=v.validators,
-                        **{kwarg: getattr(v, kwargs, None) for kwarg in m_kwargs}
-                    )
-                    break
-
-            if isinstance(v, forms.NullBooleanField):
-                self.fields[k] = serializers.BooleanField(
-                    required=v.required,
-                    allow_null=True,
-                    validators=v.validators,
-                )
-            if isinstance(v, forms.ModelMultipleChoiceField):
-                self.fields[k] = PrimaryKeyRelatedField(
-                    queryset=v.queryset,
-                    required=v.required,
-                    allow_empty=not v.required,
-                    validators=v.validators,
-                    many=True
-                )
-            elif isinstance(v, forms.ModelChoiceField):
-                self.fields[k] = PrimaryKeyRelatedField(
-                    queryset=v.queryset,
-                    required=v.required,
-                    allow_null=not v.required,
-                    validators=v.validators,
-                )
-            elif isinstance(v, forms.MultipleChoiceField):
-                self.fields[k] = serializers.MultipleChoiceField(
-                    choices=v.choices,
-                    required=v.required,
-                    allow_empty=not v.required,
-                    validators=v.validators,
-                )
-            elif isinstance(v, forms.ChoiceField):
-                self.fields[k] = serializers.ChoiceField(
-                    choices=v.choices,
-                    required=v.required,
-                    allow_null=not v.required,
-                    validators=v.validators,
-                )
-            elif isinstance(v, DateFrameField):
-                self.fields[k] = SerializerDateFrameField(
-                    required=v.required,
-                    allow_null=not v.required,
-                    validators=v.validators,
-                )
-            else:
-                self.fields[k] = FormFieldWrapperField(form_field=v, required=v.required, allow_null=not v.required)
+            self.fields[k] = form_field_to_serializer_field(v)
 
     def to_internal_value(self, data):
         if isinstance(data, QueryDict):

src/pretix/api/serializers/fields.py

@@ -1,8 +1,8 @@
 #
 # This file is part of pretix (Community Edition).
 #
-# Copyright (C) 2014-2020 Raphael Michel and contributors
-# Copyright (C) 2020-2021 rami.io GmbH and contributors
+# Copyright (C) 2014-2020  Raphael Michel and contributors
+# Copyright (C) 2020-today pretix GmbH and contributors
 #
 # This program is free software: you can redistribute it and/or modify it under the terms of the GNU Affero General
 # Public License as published by the Free Software Foundation in version 3 of the License.
@@ -109,3 +109,19 @@ class UploadedFileField(serializers.Field):
             return None
         request = self.context['request']
         return request.build_absolute_uri(url)
+
+
+class PluginsField(serializers.Field):
+
+    def to_representation(self, obj):
+        from pretix.base.plugins import get_all_plugins
+
+        return sorted([
+            p.module for p in get_all_plugins()
+            if not p.name.startswith('.') and getattr(p, 'visible', True) and p.module in obj.get_plugins()
+        ])
+
+    def to_internal_value(self, data):
+        return {
+            'plugins': data
+        }

src/pretix/api/serializers/forms.py

@@ -0,0 +1,115 @@
+#
+# This file is part of pretix (Community Edition).
+#
+# Copyright (C) 2014-2020  Raphael Michel and contributors
+# Copyright (C) 2020-today pretix GmbH and contributors
+#
+# This program is free software: you can redistribute it and/or modify it under the terms of the GNU Affero General
+# Public License as published by the Free Software Foundation in version 3 of the License.
+#
+# ADDITIONAL TERMS APPLY: Pursuant to Section 7 of the GNU Affero General Public License, additional terms are
+# applicable granting you additional permissions and placing additional restrictions on your usage of this software.
+# Please refer to the pretix LICENSE file to obtain the full terms applicable to this work. If you did not receive
+# this file, see <https://pretix.eu/about/en/license>.
+#
+# This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied
+# warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Affero General Public License for more
+# details.
+#
+# You should have received a copy of the GNU Affero General Public License along with this program.  If not, see
+# <https://www.gnu.org/licenses/>.
+#
+from django import forms
+from rest_framework import serializers
+
+from pretix.base.timeframes import DateFrameField, SerializerDateFrameField
+
+simple_mappings = (
+    (forms.DateField, serializers.DateField, ()),
+    (forms.TimeField, serializers.TimeField, ()),
+    (forms.SplitDateTimeField, serializers.DateTimeField, ()),
+    (forms.DateTimeField, serializers.DateTimeField, ()),
+    (forms.DecimalField, serializers.DecimalField, ('max_digits', 'decimal_places', 'min_value', 'max_value')),
+    (forms.FloatField, serializers.FloatField, ()),
+    (forms.IntegerField, serializers.IntegerField, ()),
+    (forms.EmailField, serializers.EmailField, ()),
+    (forms.UUIDField, serializers.UUIDField, ()),
+    (forms.URLField, serializers.URLField, ()),
+    (forms.BooleanField, serializers.BooleanField, ()),
+)
+
+
+class PrimaryKeyRelatedField(serializers.PrimaryKeyRelatedField):
+    def to_representation(self, value):
+        if isinstance(value, int):
+            return value
+        return super().to_representation(value)
+
+
+class FormFieldWrapperField(serializers.Field):
+    def __init__(self, *args, **kwargs):
+        self.form_field = kwargs.pop('form_field')
+        super().__init__(*args, **kwargs)
+
+    def to_representation(self, value):
+        return self.form_field.widget.format_value(value)
+
+    def to_internal_value(self, data):
+        d = self.form_field.widget.value_from_datadict({'name': data}, {}, 'name')
+        d = self.form_field.clean(d)
+        return d
+
+
+def form_field_to_serializer_field(field):
+    for m_from, m_to, m_kwargs in simple_mappings:
+        if isinstance(field, m_from):
+            return m_to(
+                required=field.required,
+                allow_null=not field.required,
+                validators=field.validators,
+                **{kwarg: getattr(field, kwarg, None) for kwarg in m_kwargs}
+            )
+
+    if isinstance(field, forms.NullBooleanField):
+        return serializers.BooleanField(
+            required=field.required,
+            allow_null=True,
+            validators=field.validators,
+        )
+    if isinstance(field, forms.ModelMultipleChoiceField):
+        return PrimaryKeyRelatedField(
+            queryset=field.queryset,
+            required=field.required,
+            allow_empty=not field.required,
+            validators=field.validators,
+            many=True
+        )
+    elif isinstance(field, forms.ModelChoiceField):
+        return PrimaryKeyRelatedField(
+            queryset=field.queryset,
+            required=field.required,
+            allow_null=not field.required,
+            validators=field.validators,
+        )
+    elif isinstance(field, forms.MultipleChoiceField):
+        return serializers.MultipleChoiceField(
+            choices=field.choices,
+            required=field.required,
+            allow_empty=not field.required,
+            validators=field.validators,
+        )
+    elif isinstance(field, forms.ChoiceField):
+        return serializers.ChoiceField(
+            choices=field.choices,
+            required=field.required,
+            allow_null=not field.required,
+            validators=field.validators,
+        )
+    elif isinstance(field, DateFrameField):
+        return SerializerDateFrameField(
+            required=field.required,
+            allow_null=not field.required,
+            validators=field.validators,
+        )
+    else:
+        return FormFieldWrapperField(form_field=field, required=field.required, allow_null=not field.required)

src/pretix/api/serializers/i18n.py

@@ -1,8 +1,8 @@
 #
 # This file is part of pretix (Community Edition).
 #
-# Copyright (C) 2014-2020 Raphael Michel and contributors
-# Copyright (C) 2020-2021 rami.io GmbH and contributors
+# Copyright (C) 2014-2020  Raphael Michel and contributors
+# Copyright (C) 2020-today pretix GmbH and contributors
 #
 # This program is free software: you can redistribute it and/or modify it under the terms of the GNU Affero General
 # Public License as published by the Free Software Foundation in version 3 of the License.

src/pretix/api/serializers/item.py

@@ -1,8 +1,8 @@
 #
 # This file is part of pretix (Community Edition).
 #
-# Copyright (C) 2014-2020 Raphael Michel and contributors
-# Copyright (C) 2020-2021 rami.io GmbH and contributors
+# Copyright (C) 2014-2020  Raphael Michel and contributors
+# Copyright (C) 2020-today pretix GmbH and contributors
 #
 # This program is free software: you can redistribute it and/or modify it under the terms of the GNU Affero General
 # Public License as published by the Free Software Foundation in version 3 of the License.
@@ -47,8 +47,9 @@ from pretix.api.serializers.event import MetaDataField
 from pretix.api.serializers.fields import UploadedFileField
 from pretix.api.serializers.i18n import I18nAwareModelSerializer
 from pretix.base.models import (
-    Item, ItemAddOn, ItemBundle, ItemCategory, ItemMetaValue, ItemVariation,
-    ItemVariationMetaValue, Question, QuestionOption, Quota, SalesChannel,
+    Item, ItemAddOn, ItemBundle, ItemCategory, ItemMetaValue, ItemProgramTime,
+    ItemVariation, ItemVariationMetaValue, Question, QuestionOption, Quota,
+    SalesChannel,
 )
 
 
@@ -187,6 +188,12 @@ class InlineItemAddOnSerializer(serializers.ModelSerializer):
                   'position', 'price_included', 'multi_allowed')
 
 
+class InlineItemProgramTimeSerializer(serializers.ModelSerializer):
+    class Meta:
+        model = ItemProgramTime
+        fields = ('start', 'end')
+
+
 class ItemBundleSerializer(serializers.ModelSerializer):
     class Meta:
         model = ItemBundle
@@ -212,6 +219,37 @@ class ItemBundleSerializer(serializers.ModelSerializer):
         return data
 
 
+class ItemProgramTimeSerializer(serializers.ModelSerializer):
+    class Meta:
+        model = ItemProgramTime
+        fields = ('id', 'start', 'end')
+
+    def validate(self, data):
+        data = super().validate(data)
+
+        full_data = self.to_internal_value(self.to_representation(self.instance)) if self.instance else {}
+        full_data.update(data)
+
+        start = full_data.get('start')
+        if not start:
+            raise ValidationError(_("The program start must not be empty."))
+
+        end = full_data.get('end')
+        if not end:
+            raise ValidationError(_("The program end must not be empty."))
+
+        if start > end:
+            raise ValidationError(_("The program end must not be before the program start."))
+
+        event = self.context['event']
+        if event.has_subevents:
+            raise ValidationError({
+                _("You cannot use program times on an event series.")
+            })
+
+        return data
+
+
 class ItemAddOnSerializer(serializers.ModelSerializer):
     class Meta:
         model = ItemAddOn
@@ -250,6 +288,7 @@ class ItemSerializer(SalesChannelMigrationMixin, I18nAwareModelSerializer):
     addons = InlineItemAddOnSerializer(many=True, required=False)
     bundles = InlineItemBundleSerializer(many=True, required=False)
     variations = InlineItemVariationSerializer(many=True, required=False)
+    program_times = InlineItemProgramTimeSerializer(many=True, required=False)
     tax_rate = ItemTaxRateField(source='*', read_only=True)
     meta_data = MetaDataField(required=False, source='*')
     picture = UploadedFileField(required=False, allow_null=True, allowed_types=(
@@ -271,7 +310,7 @@ class ItemSerializer(SalesChannelMigrationMixin, I18nAwareModelSerializer):
                   'available_from', 'available_from_mode', 'available_until', 'available_until_mode',
                   'require_voucher', 'hide_without_voucher', 'allow_cancel', 'require_bundling',
                   'min_per_order', 'max_per_order', 'checkin_attention', 'checkin_text', 'has_variations', 'variations',
-                  'addons', 'bundles', 'original_price', 'require_approval', 'generate_tickets',
+                  'addons', 'bundles', 'program_times', 'original_price', 'require_approval', 'generate_tickets',
                   'show_quota_left', 'hidden_if_available', 'hidden_if_item_available', 'hidden_if_item_available_mode', 'allow_waitinglist',
                   'issue_giftcard', 'meta_data',
                   'require_membership', 'require_membership_types', 'require_membership_hidden', 'grant_membership_type',
@@ -294,9 +333,9 @@ class ItemSerializer(SalesChannelMigrationMixin, I18nAwareModelSerializer):
 
     def validate(self, data):
         data = super().validate(data)
-        if self.instance and ('addons' in data or 'variations' in data or 'bundles' in data):
-            raise ValidationError(_('Updating add-ons, bundles, or variations via PATCH/PUT is not supported. Please use the '
-                                    'dedicated nested endpoint.'))
+        if self.instance and ('addons' in data or 'variations' in data or 'bundles' in data or 'program_times' in data):
+            raise ValidationError(_('Updating add-ons, bundles, program times or variations via PATCH/PUT is not '
+                                    'supported. Please use the dedicated nested endpoint.'))
 
         Item.clean_per_order(data.get('min_per_order'), data.get('max_per_order'))
         Item.clean_available(data.get('available_from'), data.get('available_until'))
@@ -347,6 +386,13 @@ class ItemSerializer(SalesChannelMigrationMixin, I18nAwareModelSerializer):
                 ItemAddOn.clean_max_min_count(addon_data.get('max_count', 0), addon_data.get('min_count', 0))
         return value
 
+    def validate_program_times(self, value):
+        if not self.instance:
+            for program_time_data in value:
+                ItemProgramTime.clean_start_end(self, start=program_time_data.get('start', None),
+                                                end=program_time_data.get('end', None))
+        return value
+
     @cached_property
     def item_meta_properties(self):
         return {
@@ -364,6 +410,7 @@ class ItemSerializer(SalesChannelMigrationMixin, I18nAwareModelSerializer):
         variations_data = validated_data.pop('variations') if 'variations' in validated_data else {}
         addons_data = validated_data.pop('addons') if 'addons' in validated_data else {}
         bundles_data = validated_data.pop('bundles') if 'bundles' in validated_data else {}
+        program_times_data = validated_data.pop('program_times') if 'program_times' in validated_data else {}
         meta_data = validated_data.pop('meta_data', None)
         picture = validated_data.pop('picture', None)
         require_membership_types = validated_data.pop('require_membership_types', [])
@@ -398,6 +445,8 @@ class ItemSerializer(SalesChannelMigrationMixin, I18nAwareModelSerializer):
             ItemAddOn.objects.create(base_item=item, **addon_data)
         for bundle_data in bundles_data:
             ItemBundle.objects.create(base_item=item, **bundle_data)
+        for program_time_data in program_times_data:
+            ItemProgramTime.objects.create(item=item, **program_time_data)
 
         # Meta data
         if meta_data is not None:
@@ -505,6 +554,11 @@ class QuestionSerializer(I18nAwareModelSerializer):
         Question._clean_identifier(self.context['event'], value, self.instance)
         return value
 
+    def validate_type(self, value):
+        if self.instance:
+            self.instance.clean_type_change(self.instance.type, value)
+        return value
+
     def validate_dependency_question(self, value):
         if value:
             if value.type not in (Question.TYPE_CHOICE, Question.TYPE_BOOLEAN, Question.TYPE_CHOICE_MULTIPLE):
@@ -545,7 +599,7 @@ class QuestionSerializer(I18nAwareModelSerializer):
         if full_data.get('show_during_checkin') and full_data.get('type') in Question.SHOW_DURING_CHECKIN_UNSUPPORTED:
             raise ValidationError(_('This type of question cannot be shown during check-in.'))
 
-        Question.clean_items(event, full_data.get('items'))
+        Question.clean_items(event, full_data.get('items') or [])
         return data
 
     def validate_options(self, value):
@@ -561,7 +615,7 @@ class QuestionSerializer(I18nAwareModelSerializer):
     @transaction.atomic
     def create(self, validated_data):
         options_data = validated_data.pop('options') if 'options' in validated_data else []
-        items = validated_data.pop('items')
+        items = validated_data.pop('items', [])
 
         question = Question.objects.create(**validated_data)
         question.items.set(items)
@@ -577,7 +631,7 @@ class QuotaSerializer(I18nAwareModelSerializer):
     class Meta:
         model = Quota
         fields = ('id', 'name', 'size', 'items', 'variations', 'subevent', 'closed', 'close_when_sold_out',
-                  'release_after_exit', 'available', 'available_number')
+                  'release_after_exit', 'available', 'available_number', 'ignore_for_event_availability')
 
     def __init__(self, *args, **kwargs):
         super().__init__(*args, **kwargs)

src/pretix/api/serializers/media.py

@@ -1,8 +1,8 @@
 #
 # This file is part of pretix (Community Edition).
 #
-# Copyright (C) 2014-2020 Raphael Michel and contributors
-# Copyright (C) 2020-2021 rami.io GmbH and contributors
+# Copyright (C) 2014-2020  Raphael Michel and contributors
+# Copyright (C) 2020-today pretix GmbH and contributors
 #
 # This program is free software: you can redistribute it and/or modify it under the terms of the GNU Affero General
 # Public License as published by the Free Software Foundation in version 3 of the License.
@@ -65,9 +65,11 @@ class ReusableMediaSerializer(I18nAwareModelSerializer):
     def __init__(self, *args, **kwargs):
         super().__init__(*args, **kwargs)
 
-        if 'linked_giftcard' in self.context['request'].query_params.getlist('expand'):
+        expand_nested = self.context['request'].query_params.getlist('expand')
+
+        if 'linked_giftcard' in expand_nested:
             self.fields['linked_giftcard'] = NestedGiftCardSerializer(read_only=True, context=self.context)
-            if 'linked_giftcard.owner_ticket' in self.context['request'].query_params.getlist('expand'):
+            if 'linked_giftcard.owner_ticket' in expand_nested:
                 self.fields['linked_giftcard'].fields['owner_ticket'] = NestedOrderPositionSerializer(read_only=True, context=self.context)
         else:
             self.fields['linked_giftcard'] = serializers.PrimaryKeyRelatedField(
@@ -76,16 +78,27 @@ class ReusableMediaSerializer(I18nAwareModelSerializer):
                 queryset=self.context['organizer'].issued_gift_cards.all()
             )
 
-        if 'linked_orderposition' in self.context['request'].query_params.getlist('expand'):
-            self.fields['linked_orderposition'] = NestedOrderPositionSerializer(read_only=True)
+        # keep linked_orderposition (singular) for backwards compatibility, will be overwritten in self.validate
+        self.fields['linked_orderposition'] = serializers.PrimaryKeyRelatedField(
+            required=False,
+            allow_null=True,
+            queryset=OrderPosition.all.filter(order__event__organizer=self.context['organizer']),
+        )
+
+        if 'linked_orderposition' in expand_nested or 'linked_orderpositions' in expand_nested:
+            self.fields['linked_orderpositions'] = NestedOrderPositionSerializer(
+                many=True,
+                read_only=True
+            )
         else:
-            self.fields['linked_orderposition'] = serializers.PrimaryKeyRelatedField(
+            self.fields['linked_orderpositions'] = serializers.PrimaryKeyRelatedField(
+                many=True,
                 required=False,
                 allow_null=True,
                 queryset=OrderPosition.all.filter(order__event__organizer=self.context['organizer']),
             )
 
-        if 'customer' in self.context['request'].query_params.getlist('expand'):
+        if 'customer' in expand_nested:
             self.fields['customer'] = CustomerSerializer(read_only=True)
         else:
             self.fields['customer'] = serializers.SlugRelatedField(
@@ -97,6 +110,19 @@ class ReusableMediaSerializer(I18nAwareModelSerializer):
 
     def validate(self, data):
         data = super().validate(data)
+        linked_orderposition = data.pop('linked_orderposition', None)
+        if linked_orderposition:
+            # backwards-compatibility
+            if 'linked_orderpositions' in data:
+                raise ValidationError({
+                    'linked_orderposition': _('You cannot use linked_orderposition and linked_orderpositions at the same time.')
+                })
+            if self.instance.linked_orderpositions.count() > 1:
+                raise ValidationError({
+                    'linked_orderposition': _('There are more than one linked_orderposition. You need to use linked_orderpositions.')
+                })
+            data['linked_orderpositions'] = [linked_orderposition]
+
         if 'type' in data and 'identifier' in data:
             qs = self.context['organizer'].reusable_media.filter(
                 identifier=data['identifier'], type=data['type']
@@ -109,6 +135,14 @@ class ReusableMediaSerializer(I18nAwareModelSerializer):
                 )
         return data
 
+    def to_representation(self, obj):
+        r = super(ReusableMediaSerializer, self).to_representation(obj)
+        ops = r.get('linked_orderpositions')
+        if len(ops) < 2:
+            # add linked_orderposition (singular) for backwards compatibility
+            r['linked_orderposition'] = ops[0] if ops else None
+        return r
+
     class Meta:
         model = ReusableMedium
         fields = (
@@ -118,10 +152,12 @@ class ReusableMediaSerializer(I18nAwareModelSerializer):
             'updated',
             'type',
             'identifier',
+            'secret',
+            'label',
             'active',
             'expires',
             'customer',
-            'linked_orderposition',
+            'linked_orderpositions',
             'linked_giftcard',
             'info',
             'notes',

src/pretix/api/serializers/order.py

@@ -1,8 +1,8 @@
 #
 # This file is part of pretix (Community Edition).
 #
-# Copyright (C) 2014-2020 Raphael Michel and contributors
-# Copyright (C) 2020-2021 rami.io GmbH and contributors
+# Copyright (C) 2014-2020  Raphael Michel and contributors
+# Copyright (C) 2020-today pretix GmbH and contributors
 #
 # This program is free software: you can redistribute it and/or modify it under the terms of the GNU Affero General
 # Public License as published by the Free Software Foundation in version 3 of the License.
@@ -42,6 +42,7 @@ from rest_framework.reverse import reverse
 
 from pretix.api.serializers import CompatibleJSONField
 from pretix.api.serializers.event import SubEventSerializer
+from pretix.api.serializers.forms import form_field_to_serializer_field
 from pretix.api.serializers.i18n import I18nAwareModelSerializer
 from pretix.api.serializers.item import (
     InlineItemVariationSerializer, ItemSerializer, QuestionSerializer,
@@ -49,23 +50,28 @@ from pretix.api.serializers.item import (
 from pretix.api.signals import order_api_details, orderposition_api_details
 from pretix.base.decimal import round_decimal
 from pretix.base.i18n import language
+from pretix.base.invoicing.transmission import get_transmission_types
 from pretix.base.models import (
-    CachedFile, Checkin, Customer, Invoice, InvoiceAddress, InvoiceLine, Item,
-    ItemVariation, Order, OrderPosition, Question, QuestionAnswer,
-    ReusableMedium, SalesChannel, Seat, SubEvent, TaxRule, Voucher,
+    CachedFile, Checkin, Customer, Device, Invoice, InvoiceAddress,
+    InvoiceLine, Item, ItemVariation, Order, OrderPosition, Question,
+    QuestionAnswer, ReusableMedium, SalesChannel, Seat, SubEvent, TaxRule,
+    Voucher,
 )
 from pretix.base.models.orders import (
     BlockedTicketSecret, CartPosition, OrderFee, OrderPayment, OrderRefund,
-    PrintLog, RevokedTicketSecret,
+    PrintLog, RevokedTicketSecret, Transaction,
 )
 from pretix.base.pdf import get_images, get_variables
 from pretix.base.services.cart import error_messages
 from pretix.base.services.locking import LOCK_TRUST_WINDOW, lock_objects
 from pretix.base.services.pricing import (
-    apply_discounts, get_line_price, get_listed_price, is_included_for_free,
+    apply_discounts, apply_rounding, get_line_price, get_listed_price,
+    is_included_for_free,
 )
 from pretix.base.services.quotas import QuotaAvailability
-from pretix.base.settings import COUNTRIES_WITH_STATE_IN_ADDRESS
+from pretix.base.settings import (
+    COUNTRIES_WITH_STATE_IN_ADDRESS, ROUNDING_MODES,
+)
 from pretix.base.signals import register_ticket_outputs
 from pretix.helpers.countries import CachedCountries
 from pretix.multidomain.urlreverse import build_absolute_uri
@@ -102,6 +108,13 @@ class CountryField(serializers.Field):
         return str(src) if src else None
 
 
+class TransmissionInfoSerializer(serializers.Serializer):
+    def __init__(self, *args, transmission_type, **kwargs):
+        super().__init__(*args, **kwargs)
+        for k, v in transmission_type.invoice_address_form_fields.items():
+            self.fields[k] = form_field_to_serializer_field(v)
+
+
 class InvoiceAddressSerializer(I18nAwareModelSerializer):
     country = CompatibleCountryField(source='*')
     name = serializers.CharField(required=False)
@@ -109,7 +122,8 @@ class InvoiceAddressSerializer(I18nAwareModelSerializer):
     class Meta:
         model = InvoiceAddress
         fields = ('last_modified', 'is_business', 'company', 'name', 'name_parts', 'street', 'zipcode', 'city', 'country',
-                  'state', 'vat_id', 'vat_id_validated', 'custom_field', 'internal_reference')
+                  'state', 'vat_id', 'vat_id_validated', 'custom_field', 'internal_reference', 'transmission_type',
+                  'transmission_info')
         read_only_fields = ('last_modified',)
 
     def __init__(self, *args, **kwargs):
@@ -147,6 +161,48 @@ class InvoiceAddressSerializer(I18nAwareModelSerializer):
                     {'state': ['"{}" is not a known subdivision of the country "{}".'.format(data.get('state'), cc)]}
                 )
 
+        if data.get("transmission_type"):
+            for t in get_transmission_types():
+                if data.get("transmission_type") == t.identifier:
+                    if not t.is_available(self.context["request"].event, data.get("country"), data.get("is_business")):
+                        raise ValidationError({
+                            "transmission_type": "The selected transmission type is not available for this country or address type."
+                        })
+
+                    ts = TransmissionInfoSerializer(transmission_type=t, data=data.get("transmission_info", {}))
+                    try:
+                        ts.is_valid(raise_exception=True)
+                    except ValidationError as e:
+                        raise ValidationError(
+                            {"transmission_info": e.detail}
+                        )
+                    data["transmission_info"] = ts.validated_data
+
+                    required_fields = t.invoice_address_form_fields_required(data.get("country"), data.get("is_business"))
+                    for r in required_fields:
+                        if r in self.fields:
+                            if not data.get(r):
+                                raise ValidationError(
+                                    {r: "This field is required for the selected type of invoice transmission."}
+                                )
+                        else:
+                            if not ts.validated_data.get(r):
+                                raise ValidationError(
+                                    {"transmission_info": {r: "This field is required for the selected type of invoice transmission."}}
+                                )
+                    break  # do not call else branch of for loop
+                elif t.exclusive:
+                    if t.is_available(self.context["request"].event, data.get("country"), data.get("is_business")):
+                        raise ValidationError({
+                            "transmission_type": "The transmission type '%s' must be used for this country or address type." % (
+                                t.identifier,
+                            )
+                        })
+            else:
+                raise ValidationError(
+                    {"transmission_type": "Unknown transmission type."}
+                )
+
         return data
 
 
@@ -273,7 +329,7 @@ class AnswerSerializer(I18nAwareModelSerializer):
         return data
 
 
-class CheckinSerializer(I18nAwareModelSerializer):
+class InlineCheckinSerializer(I18nAwareModelSerializer):
     device_id = serializers.SlugRelatedField(
         source='device',
         slug_field='device_id',
@@ -285,6 +341,21 @@ class CheckinSerializer(I18nAwareModelSerializer):
         fields = ('id', 'datetime', 'list', 'auto_checked_in', 'gate', 'device', 'device_id', 'type')
 
 
+class CheckinSerializer(I18nAwareModelSerializer):
+    device_id = serializers.SlugRelatedField(
+        source='device',
+        slug_field='device_id',
+        read_only=True,
+    )
+
+    class Meta:
+        model = Checkin
+        fields = (
+            'id', 'successful', 'error_reason', 'error_explanation', 'position', 'datetime', 'list', 'created',
+            'auto_checked_in', 'gate', 'device', 'device_id', 'type'
+        )
+
+
 class PrintLogSerializer(serializers.ModelSerializer):
     device_id = serializers.SlugRelatedField(
         source='device',
@@ -508,7 +579,7 @@ class OrderPositionPluginDataField(serializers.Field):
 
 
 class OrderPositionSerializer(I18nAwareModelSerializer):
-    checkins = CheckinSerializer(many=True, read_only=True)
+    checkins = InlineCheckinSerializer(many=True, read_only=True)
     print_logs = PrintLogSerializer(many=True, read_only=True)
     answers = AnswerSerializer(many=True)
     downloads = PositionDownloadsField(source='*', read_only=True)
@@ -607,6 +678,7 @@ class CheckinListOrderPositionSerializer(OrderPositionSerializer):
     order__status = serializers.SlugRelatedField(read_only=True, slug_field='status', source='order')
     order__valid_if_pending = serializers.SlugRelatedField(read_only=True, slug_field='valid_if_pending', source='order')
     order__require_approval = serializers.SlugRelatedField(read_only=True, slug_field='require_approval', source='order')
+    order__locale = serializers.SlugRelatedField(read_only=True, slug_field='locale', source='order')
 
     class Meta:
         model = OrderPosition
@@ -615,7 +687,7 @@ class CheckinListOrderPositionSerializer(OrderPositionSerializer):
                   'attendee_email', 'voucher', 'tax_rate', 'tax_value', 'secret', 'addon_to', 'subevent', 'checkins',
                   'print_logs', 'downloads', 'answers', 'tax_rule', 'pseudonymization_id', 'pdf_data', 'seat',
                   'require_attention', 'order__status', 'order__valid_if_pending', 'order__require_approval',
-                  'valid_from', 'valid_until', 'blocked')
+                  'order__locale', 'valid_from', 'valid_until', 'blocked')
 
     def __init__(self, *args, **kwargs):
         super().__init__(*args, **kwargs)
@@ -780,14 +852,15 @@ class OrderSerializer(I18nAwareModelSerializer):
         list_serializer_class = OrderListSerializer
         fields = (
             'code', 'event', 'status', 'testmode', 'secret', 'email', 'phone', 'locale', 'datetime', 'expires', 'payment_date',
-            'payment_provider', 'fees', 'total', 'comment', 'custom_followup_at', 'invoice_address', 'positions', 'downloads',
-            'checkin_attention', 'checkin_text', 'last_modified', 'payments', 'refunds', 'require_approval', 'sales_channel',
-            'url', 'customer', 'valid_if_pending', 'api_meta', 'cancellation_date', 'plugin_data',
+            'payment_provider', 'fees', 'total', 'tax_rounding_mode', 'comment', 'custom_followup_at', 'invoice_address',
+            'positions', 'downloads', 'checkin_attention', 'checkin_text', 'last_modified', 'payments', 'refunds',
+            'require_approval', 'sales_channel', 'url', 'customer', 'valid_if_pending', 'api_meta', 'cancellation_date',
+            'plugin_data',
         )
         read_only_fields = (
             'code', 'status', 'testmode', 'secret', 'datetime', 'expires', 'payment_date',
-            'payment_provider', 'fees', 'total', 'positions', 'downloads', 'customer',
-            'last_modified', 'payments', 'refunds', 'require_approval', 'sales_channel', 'cancellation_date'
+            'payment_provider', 'fees', 'total', 'tax_rounding_mode', 'positions', 'downloads', 'customer',
+            'last_modified', 'payments', 'refunds', 'require_approval', 'sales_channel', 'cancellation_date',
         )
 
     def __init__(self, *args, **kwargs):
@@ -952,7 +1025,7 @@ class OrderPositionCreateSerializer(I18nAwareModelSerializer):
         fields = ('positionid', 'item', 'variation', 'price', 'attendee_name', 'attendee_name_parts', 'attendee_email',
                   'company', 'street', 'zipcode', 'city', 'country', 'state', 'is_bundled',
                   'secret', 'addon_to', 'subevent', 'answers', 'seat', 'voucher', 'valid_from', 'valid_until',
-                  'requested_valid_from', 'use_reusable_medium')
+                  'requested_valid_from', 'use_reusable_medium', 'discount')
 
     def __init__(self, *args, **kwargs):
         super().__init__(*args, **kwargs)
@@ -1048,6 +1121,10 @@ class OrderPositionCreateSerializer(I18nAwareModelSerializer):
                     {'state': ['"{}" is not a known subdivision of the country "{}".'.format(data.get('state'), cc)]}
                 )
 
+        if data.get('price') is None and data.get('discount'):
+            raise ValidationError(
+                {'discount': ['You can only specify a discount if you do the price computation, but price is not set.']}
+            )
         return data
 
 
@@ -1102,11 +1179,13 @@ class OrderCreateSerializer(I18nAwareModelSerializer):
         queryset=SalesChannel.objects.none(),
         required=False,
     )
+    tax_rounding_mode = serializers.ChoiceField(choices=ROUNDING_MODES, allow_null=True, required=False,)
     locale = serializers.ChoiceField(choices=[], required=False, allow_null=True)
 
     def __init__(self, *args, **kwargs):
         super().__init__(*args, **kwargs)
         self.fields['positions'].child.fields['voucher'].queryset = self.context['event'].vouchers.all()
+        self.fields['positions'].child.fields['discount'].queryset = self.context['event'].discounts.all()
         self.fields['customer'].queryset = self.context['event'].organizer.customers.all()
         self.fields['expires'].required = False
         self.fields["sales_channel"].queryset = self.context["event"].organizer.sales_channels.all()
@@ -1117,7 +1196,7 @@ class OrderCreateSerializer(I18nAwareModelSerializer):
         fields = ('code', 'status', 'testmode', 'email', 'phone', 'locale', 'payment_provider', 'fees', 'comment', 'sales_channel',
                   'invoice_address', 'positions', 'checkin_attention', 'checkin_text', 'payment_info', 'payment_date',
                   'consume_carts', 'force', 'send_email', 'simulate', 'customer', 'custom_followup_at',
-                  'require_approval', 'valid_if_pending', 'expires', 'api_meta')
+                  'require_approval', 'valid_if_pending', 'expires', 'api_meta', 'tax_rounding_mode')
 
     def validate_payment_provider(self, pp):
         if pp is None:
@@ -1514,18 +1593,22 @@ class OrderCreateSerializer(I18nAwareModelSerializer):
                 pos.voucher_budget_use = max(listed_price - price_after_voucher, Decimal('0.00'))
 
         order_positions = [pos_data['__instance'] for pos_data in positions_data]
-        discount_results = apply_discounts(
-            self.context['event'],
-            order.sales_channel,
-            [
-                (cp.item_id, cp.subevent_id, cp.price, bool(cp.addon_to), cp.is_bundled, pos._voucher_discount)
-                for cp in order_positions
-            ]
-        )
-        for cp, (new_price, discount) in zip(order_positions, discount_results):
-            if new_price != pos.price and pos._auto_generated_price:
-                pos.price = new_price
-            pos.discount = discount
+        if not any([p.get("discount") for p in positions_data]):
+            # If any discount is set by the client (i.e. pretixPOS), we do not recalculate but believe the client
+            # to avoid differences in end results.
+            discount_results = apply_discounts(
+                self.context['event'],
+                order.sales_channel,
+                [
+                    (cp.item_id, cp.subevent_id, cp.subevent.date_from if cp.subevent_id else None, cp.price,
+                     bool(cp.addon_to), cp.is_bundled, pos._voucher_discount)
+                    for cp in order_positions
+                ]
+            )
+            for cp, (new_price, discount) in zip(order_positions, discount_results):
+                if new_price != pos.price and pos._auto_generated_price:
+                    pos.price = new_price
+                pos.discount = discount
 
         # Save instances
         for pos_data in positions_data:
@@ -1572,10 +1655,9 @@ class OrderCreateSerializer(I18nAwareModelSerializer):
                         answ.options.add(*options)
 
                 if use_reusable_medium:
-                    use_reusable_medium.linked_orderposition = pos
-                    use_reusable_medium.save(update_fields=['linked_orderposition'])
+                    use_reusable_medium.linked_orderpositions.add(pos)
                     use_reusable_medium.log_action(
-                        'pretix.reusable_medium.linked_orderposition.changed',
+                        'pretix.reusable_medium.linked_orderposition.added',
                         data={
                             'by_order': order.code,
                             'linked_orderposition': pos.pk,
@@ -1598,7 +1680,7 @@ class OrderCreateSerializer(I18nAwareModelSerializer):
                                                   self.context['event'].currency)
             is_split_taxes = fee_data.pop('_split_taxes_like_products', False)
 
-            if is_split_taxes:
+            if is_split_taxes and order.total:
                 d = defaultdict(lambda: Decimal('0.00'))
                 trz = TaxRule.zero()
                 for p in pos_map.values():
@@ -1639,7 +1721,31 @@ class OrderCreateSerializer(I18nAwareModelSerializer):
                 else:
                     f.save()
 
-        order.total += sum([f.value for f in fees])
+        rounding_mode = validated_data.get("tax_rounding_mode")
+        if not rounding_mode:
+            if isinstance(self.context.get("auth"), Device):
+                # Safety fallback to avoid differences in tax reporting
+                brand = self.context.get("auth").software_brand or ""
+                if "pretixPOS" in brand or "pretixKIOSK" in brand:
+                    rounding_mode = "line"
+        if not rounding_mode:
+            rounding_mode = self.context["event"].settings.tax_rounding
+        changed = apply_rounding(
+            rounding_mode,
+            self.context["event"].currency,
+            [*pos_map.values(), *fees]
+        )
+        for line in changed:
+            if isinstance(line, OrderPosition):
+                line.save(update_fields=[
+                    "price", "price_includes_rounding_correction", "tax_value", "tax_value_includes_rounding_correction"
+                ])
+            elif isinstance(line, OrderFee):
+                line.save(update_fields=[
+                    "value", "value_includes_rounding_correction", "tax_value", "tax_value_includes_rounding_correction"
+                ])
+
+        order.total = sum([c.price for c in pos_map.values()]) + sum([f.value for f in fees])
         if simulate:
             order.fees = fees
             order.positions = pos_map.values()
@@ -1703,12 +1809,14 @@ class LinePositionField(serializers.IntegerField):
 
 class InlineInvoiceLineSerializer(I18nAwareModelSerializer):
     position = LinePositionField(read_only=True)
+    event_date_from = serializers.DateTimeField(read_only=True, source="period_start")
+    event_date_to = serializers.DateTimeField(read_only=True, source="period_end")
 
     class Meta:
         model = InvoiceLine
         fields = ('position', 'description', 'item', 'variation', 'subevent', 'attendee_name', 'event_date_from',
-                  'event_date_to', 'gross_value', 'tax_value', 'tax_rate', 'tax_code', 'tax_name', 'fee_type',
-                  'fee_internal_type', 'event_location')
+                  'event_date_to', 'period_start', 'period_end', 'gross_value', 'tax_value', 'tax_rate', 'tax_code',
+                  'tax_name', 'fee_type', 'fee_internal_type', 'event_location')
 
 
 class InvoiceSerializer(I18nAwareModelSerializer):
@@ -1722,13 +1830,14 @@ class InvoiceSerializer(I18nAwareModelSerializer):
     class Meta:
         model = Invoice
         fields = ('event', 'order', 'number', 'is_cancellation', 'invoice_from', 'invoice_from_name', 'invoice_from_zipcode',
-                  'invoice_from_city', 'invoice_from_country', 'invoice_from_tax_id', 'invoice_from_vat_id',
-                  'invoice_to', 'invoice_to_company', 'invoice_to_name', 'invoice_to_street', 'invoice_to_zipcode',
-                  'invoice_to_city', 'invoice_to_state', 'invoice_to_country', 'invoice_to_vat_id', 'invoice_to_beneficiary',
-                  'custom_field', 'date', 'refers', 'locale',
+                  'invoice_from_city', 'invoice_from_state', 'invoice_from_country', 'invoice_from_tax_id', 'invoice_from_vat_id',
+                  'invoice_to', 'invoice_to_is_business', 'invoice_to_company', 'invoice_to_name', 'invoice_to_street',
+                  'invoice_to_zipcode', 'invoice_to_city', 'invoice_to_state', 'invoice_to_country', 'invoice_to_vat_id',
+                  'invoice_to_beneficiary', 'invoice_to_transmission_info', 'custom_field', 'date', 'refers', 'locale',
                   'introductory_text', 'additional_text', 'payment_provider_text', 'payment_provider_stamp',
                   'footer_text', 'lines', 'foreign_currency_display', 'foreign_currency_rate',
-                  'foreign_currency_rate_date', 'internal_reference')
+                  'foreign_currency_rate_date', 'internal_reference', 'transmission_type', 'transmission_provider',
+                  'transmission_status', 'transmission_date')
 
 
 class OrderPaymentCreateSerializer(I18nAwareModelSerializer):
@@ -1781,3 +1890,23 @@ class BlockedTicketSecretSerializer(I18nAwareModelSerializer):
     class Meta:
         model = BlockedTicketSecret
         fields = ('id', 'secret', 'updated', 'blocked')
+
+
+class TransactionSerializer(I18nAwareModelSerializer):
+    order = serializers.SlugRelatedField(slug_field="code", read_only=True)
+
+    class Meta:
+        model = Transaction
+        fields = (
+            "id", "order", "created", "datetime", "positionid", "count", "item", "variation",
+            "subevent", "price", "tax_rate", "tax_rule", "tax_code", "tax_value", "fee_type",
+            "internal_type"
+        )
+
+
+class OrganizerTransactionSerializer(TransactionSerializer):
+    event = serializers.SlugRelatedField(source="order.event", slug_field="slug", read_only=True)
+
+    class Meta:
+        model = Transaction
+        fields = TransactionSerializer.Meta.fields + ("event",)

src/pretix/api/serializers/orderchange.py

@@ -1,8 +1,8 @@
 #
 # This file is part of pretix (Community Edition).
 #
-# Copyright (C) 2014-2020 Raphael Michel and contributors
-# Copyright (C) 2020-2021 rami.io GmbH and contributors
+# Copyright (C) 2014-2020  Raphael Michel and contributors
+# Copyright (C) 2020-today pretix GmbH and contributors
 #
 # This program is free software: you can redistribute it and/or modify it under the terms of the GNU Affero General
 # Public License as published by the Free Software Foundation in version 3 of the License.
@@ -83,6 +83,7 @@ class OrderPositionCreateForExistingOrderSerializer(OrderPositionCreateSerialize
 
     def create(self, validated_data):
         ocm = self.context['ocm']
+        check_quotas = self.context.get('check_quotas', True)
 
         try:
             ocm.add_position(
@@ -96,7 +97,7 @@ class OrderPositionCreateForExistingOrderSerializer(OrderPositionCreateSerialize
                 valid_until=validated_data.get('valid_until'),
             )
             if self.context.get('commit', True):
-                ocm.commit()
+                ocm.commit(check_quotas=check_quotas)
                 return validated_data['order'].positions.order_by('-positionid').first()
             else:
                 return OrderPosition()  # fake to appease DRF
@@ -251,7 +252,7 @@ class OrderPositionChangeSerializer(serializers.ModelSerializer):
     class Meta:
         model = OrderPosition
         fields = (
-            'item', 'variation', 'subevent', 'seat', 'price', 'tax_rule', 'valid_from', 'valid_until'
+            'item', 'variation', 'subevent', 'seat', 'price', 'tax_rule', 'valid_from', 'valid_until', 'secret'
         )
 
     def __init__(self, *args, **kwargs):
@@ -310,6 +311,7 @@ class OrderPositionChangeSerializer(serializers.ModelSerializer):
 
     def update(self, instance, validated_data):
         ocm = self.context['ocm']
+        check_quotas = self.context.get('check_quotas', True)
         current_seat = {'seat_guid': instance.seat.seat_guid} if instance.seat else None
         item = validated_data.get('item', instance.item)
         variation = validated_data.get('variation', instance.variation)
@@ -319,6 +321,7 @@ class OrderPositionChangeSerializer(serializers.ModelSerializer):
         tax_rule = validated_data.get('tax_rule', instance.tax_rule)
         valid_from = validated_data.get('valid_from', instance.valid_from)
         valid_until = validated_data.get('valid_until', instance.valid_until)
+        secret = validated_data.get('secret', instance.secret)
 
         change_item = None
         if item != instance.item or variation != instance.variation:
@@ -351,8 +354,11 @@ class OrderPositionChangeSerializer(serializers.ModelSerializer):
             if valid_until != instance.valid_until:
                 ocm.change_valid_until(instance, valid_until)
 
+            if secret != instance.secret:
+                ocm.change_ticket_secret(instance, secret)
+
             if self.context.get('commit', True):
-                ocm.commit()
+                ocm.commit(check_quotas=check_quotas)
                 instance.refresh_from_db()
         except OrderError as e:
             raise ValidationError(str(e))

src/pretix/api/serializers/organizer.py

@@ -1,8 +1,8 @@
 #
 # This file is part of pretix (Community Edition).
 #
-# Copyright (C) 2014-2020 Raphael Michel and contributors
-# Copyright (C) 2020-2021 rami.io GmbH and contributors
+# Copyright (C) 2014-2020  Raphael Michel and contributors
+# Copyright (C) 2020-today pretix GmbH and contributors
 #
 # This program is free software: you can redistribute it and/or modify it under the terms of the GNU Affero General
 # Public License as published by the Free Software Foundation in version 3 of the License.
@@ -24,6 +24,7 @@ from decimal import Decimal
 
 from django.conf import settings
 from django.core.exceptions import ObjectDoesNotExist
+from django.db import transaction
 from django.db.models import Q
 from django.utils.crypto import get_random_string
 from django.utils.translation import gettext_lazy as _
@@ -32,6 +33,7 @@ from rest_framework.exceptions import ValidationError
 
 from pretix.api.auth.devicesecurity import get_all_security_profiles
 from pretix.api.serializers import AsymmetricField
+from pretix.api.serializers.fields import PluginsField
 from pretix.api.serializers.i18n import I18nAwareModelSerializer
 from pretix.api.serializers.order import CompatibleJSONField
 from pretix.api.serializers.settings import SettingsSerializer
@@ -43,6 +45,10 @@ from pretix.base.models import (
     SalesChannel, SeatingPlan, Team, TeamAPIToken, TeamInvite, User,
 )
 from pretix.base.models.seating import SeatingPlanLayoutValidator
+from pretix.base.plugins import (
+    PLUGIN_LEVEL_EVENT, PLUGIN_LEVEL_EVENT_ORGANIZER_HYBRID,
+    PLUGIN_LEVEL_ORGANIZER,
+)
 from pretix.base.services.mail import SendMailException, mail
 from pretix.base.settings import validate_organizer_settings
 from pretix.helpers.urls import build_absolute_uri as build_global_uri
@@ -53,13 +59,47 @@ logger = logging.getLogger(__name__)
 
 class OrganizerSerializer(I18nAwareModelSerializer):
     public_url = serializers.SerializerMethodField('get_organizer_url', read_only=True)
+    plugins = PluginsField(required=False, source='*')
+    name = serializers.CharField(read_only=True)
+    slug = serializers.CharField(read_only=True)
 
     def get_organizer_url(self, organizer):
         return build_absolute_uri(organizer, 'presale:organizer.index')
 
     class Meta:
         model = Organizer
-        fields = ('name', 'slug', 'public_url')
+        fields = ('name', 'slug', 'public_url', 'plugins')
+
+    def validate_plugins(self, value):
+        from pretix.base.plugins import get_all_plugins
+
+        plugins_available = {
+            p.module: p for p in get_all_plugins(organizer=self.instance)
+            if not p.name.startswith('.') and getattr(p, 'visible', True)
+        }
+        settings_holder = self.instance
+
+        allowed_levels = (PLUGIN_LEVEL_ORGANIZER, PLUGIN_LEVEL_EVENT_ORGANIZER_HYBRID)
+        for plugin in value.get('plugins'):
+            if plugin not in plugins_available:
+                raise ValidationError(_('Unknown plugin: \'{name}\'.').format(name=plugin))
+            if getattr(plugins_available[plugin], 'restricted', False):
+                if plugin not in settings_holder.settings.allowed_restricted_plugins:
+                    raise ValidationError(_('Restricted plugin: \'{name}\'.').format(name=plugin))
+            if getattr(plugins_available[plugin], 'level', PLUGIN_LEVEL_EVENT) not in allowed_levels:
+                raise ValidationError('Plugin cannot be enabled on this level: \'{name}\'.'.format(name=plugin))
+
+        return value
+
+    @transaction.atomic
+    def update(self, instance, validated_data):
+        plugins = validated_data.pop('plugins', None)
+        organizer = super().update(instance, validated_data)
+        # Plugins
+        if plugins is not None:
+            organizer.set_active_plugins(plugins)
+            organizer.save()
+        return organizer
 
 
 class SeatingPlanSerializer(I18nAwareModelSerializer):
@@ -426,6 +466,9 @@ class OrganizerSettingsSerializer(SettingsSerializer):
         'organizer_logo_image_inherit',
         'organizer_logo_image',
         'privacy_url',
+        'accessibility_url',
+        'accessibility_title',
+        'accessibility_text',
         'cookie_consent',
         'cookie_consent_dialog_title',
         'cookie_consent_dialog_text',
@@ -441,6 +484,7 @@ class OrganizerSettingsSerializer(SettingsSerializer):
         'reusable_media_type_nfc_mf0aes',
         'reusable_media_type_nfc_mf0aes_autocreate_giftcard',
         'reusable_media_type_nfc_mf0aes_autocreate_giftcard_currency',
+        'reusable_media_type_nfc_mf0aes_random_uid',
     ]
 
     def __init__(self, *args, **kwargs):

src/pretix/api/serializers/settings.py

@@ -1,8 +1,8 @@
 #
 # This file is part of pretix (Community Edition).
 #
-# Copyright (C) 2014-2020 Raphael Michel and contributors
-# Copyright (C) 2020-2021 rami.io GmbH and contributors
+# Copyright (C) 2014-2020  Raphael Michel and contributors
+# Copyright (C) 2020-today pretix GmbH and contributors
 #
 # This program is free software: you can redistribute it and/or modify it under the terms of the GNU Affero General
 # Public License as published by the Free Software Foundation in version 3 of the License.

src/pretix/api/serializers/shredders.py

@@ -1,8 +1,8 @@
 #
 # This file is part of pretix (Community Edition).
 #
-# Copyright (C) 2014-2020 Raphael Michel and contributors
-# Copyright (C) 2020-2021 rami.io GmbH and contributors
+# Copyright (C) 2014-2020  Raphael Michel and contributors
+# Copyright (C) 2020-today pretix GmbH and contributors
 #
 # This program is free software: you can redistribute it and/or modify it under the terms of the GNU Affero General
 # Public License as published by the Free Software Foundation in version 3 of the License.

src/pretix/api/serializers/voucher.py

@@ -1,8 +1,8 @@
 #
 # This file is part of pretix (Community Edition).
 #
-# Copyright (C) 2014-2020 Raphael Michel and contributors
-# Copyright (C) 2020-2021 rami.io GmbH and contributors
+# Copyright (C) 2014-2020  Raphael Michel and contributors
+# Copyright (C) 2020-today pretix GmbH and contributors
 #
 # This program is free software: you can redistribute it and/or modify it under the terms of the GNU Affero General
 # Public License as published by the Free Software Foundation in version 3 of the License.
@@ -19,6 +19,8 @@
 # You should have received a copy of the GNU Affero General Public License along with this program.  If not, see
 # <https://www.gnu.org/licenses/>.
 #
+from decimal import Decimal
+
 from rest_framework import serializers
 from rest_framework.exceptions import ValidationError
 
@@ -64,14 +66,15 @@ class SeatGuidField(serializers.CharField):
 
 class VoucherSerializer(I18nAwareModelSerializer):
     seat = SeatGuidField(allow_null=True, required=False)
+    budget_used = serializers.DecimalField(read_only=True, max_digits=13, decimal_places=2, min_value=Decimal('0.00'))
 
     class Meta:
         model = Voucher
-        fields = ('id', 'code', 'max_usages', 'redeemed', 'min_usages', 'valid_until', 'block_quota',
+        fields = ('id', 'created', 'code', 'max_usages', 'redeemed', 'min_usages', 'valid_until', 'block_quota',
                   'allow_ignore_quota', 'price_mode', 'value', 'item', 'variation', 'quota',
                   'tag', 'comment', 'subevent', 'show_hidden_items', 'seat', 'all_addons_included',
-                  'all_bundles_included')
-        read_only_fields = ('id', 'redeemed')
+                  'all_bundles_included', 'budget', 'budget_used')
+        read_only_fields = ('id', 'redeemed', 'budget_used')
         list_serializer_class = VoucherListSerializer
 
     def validate(self, data):

src/pretix/api/serializers/waitinglist.py

@@ -1,8 +1,8 @@
 #
 # This file is part of pretix (Community Edition).
 #
-# Copyright (C) 2014-2020 Raphael Michel and contributors
-# Copyright (C) 2020-2021 rami.io GmbH and contributors
+# Copyright (C) 2014-2020  Raphael Michel and contributors
+# Copyright (C) 2020-today pretix GmbH and contributors
 #
 # This program is free software: you can redistribute it and/or modify it under the terms of the GNU Affero General
 # Public License as published by the Free Software Foundation in version 3 of the License.

src/pretix/api/serializers/webhooks.py

@@ -1,8 +1,8 @@
 #
 # This file is part of pretix (Community Edition).
 #
-# Copyright (C) 2014-2020 Raphael Michel and contributors
-# Copyright (C) 2020-2021 rami.io GmbH and contributors
+# Copyright (C) 2014-2020  Raphael Michel and contributors
+# Copyright (C) 2020-today pretix GmbH and contributors
 #
 # This program is free software: you can redistribute it and/or modify it under the terms of the GNU Affero General
 # Public License as published by the Free Software Foundation in version 3 of the License.

src/pretix/api/signals.py

@@ -1,8 +1,8 @@
 #
 # This file is part of pretix (Community Edition).
 #
-# Copyright (C) 2014-2020 Raphael Michel and contributors
-# Copyright (C) 2020-2021 rami.io GmbH and contributors
+# Copyright (C) 2014-2020  Raphael Michel and contributors
+# Copyright (C) 2020-today pretix GmbH and contributors
 #
 # This program is free software: you can redistribute it and/or modify it under the terms of the GNU Affero General
 # Public License as published by the Free Software Foundation in version 3 of the License.
@@ -21,22 +21,22 @@
 #
 from datetime import timedelta
 
-from django.dispatch import Signal, receiver
+from django.dispatch import receiver
 from django.utils.timezone import now
 from django_scopes import scopes_disabled
 
 from pretix.api.models import ApiCall, WebHookCall
-from pretix.base.signals import EventPluginSignal, periodic_task
+from pretix.base.signals import EventPluginSignal, GlobalSignal, periodic_task
 from pretix.helpers.periodic import minimum_interval
 
-register_webhook_events = Signal()
+register_webhook_events = GlobalSignal()
 """
 This signal is sent out to get all known webhook events. Receivers should return an
 instance of a subclass of ``pretix.api.webhooks.WebhookEvent`` or a list of such
 instances.
 """
 
-register_device_security_profile = Signal()
+register_device_security_profile = GlobalSignal()
 """
 This signal is sent out to get all known device security_profiles. Receivers should
 return an instance of a subclass of ``pretix.api.auth.devicesecurity.BaseSecurityProfile``

src/pretix/api/urls.py

@@ -1,8 +1,8 @@
 #
 # This file is part of pretix (Community Edition).
 #
-# Copyright (C) 2014-2020 Raphael Michel and contributors
-# Copyright (C) 2020-2021 rami.io GmbH and contributors
+# Copyright (C) 2014-2020  Raphael Michel and contributors
+# Copyright (C) 2020-today pretix GmbH and contributors
 #
 # This program is free software: you can redistribute it and/or modify it under the terms of the GNU Affero General
 # Public License as published by the Free Software Foundation in version 3 of the License.
@@ -66,6 +66,7 @@ orga_router.register(r'orders', order.OrganizerOrderViewSet)
 orga_router.register(r'invoices', order.InvoiceViewSet)
 orga_router.register(r'scheduled_exports', exporters.ScheduledOrganizerExportViewSet)
 orga_router.register(r'exporters', exporters.OrganizerExportersViewSet, basename='exporters')
+orga_router.register(r'transactions', order.OrganizerTransactionViewSet)
 
 team_router = routers.DefaultRouter()
 team_router.register(r'members', organizer.TeamMemberViewSet)
@@ -83,6 +84,7 @@ event_router.register(r'quotas', item.QuotaViewSet)
 event_router.register(r'vouchers', voucher.VoucherViewSet)
 event_router.register(r'orders', order.EventOrderViewSet)
 event_router.register(r'orderpositions', order.OrderPositionViewSet)
+event_router.register(r'transactions', order.TransactionViewSet)
 event_router.register(r'invoices', order.InvoiceViewSet)
 event_router.register(r'revokedsecrets', order.RevokedSecretViewSet, basename='revokedsecrets')
 event_router.register(r'blockedsecrets', order.BlockedSecretViewSet, basename='blockedsecrets')
@@ -90,6 +92,7 @@ event_router.register(r'taxrules', event.TaxRuleViewSet)
 event_router.register(r'seats', event.SeatViewSet)
 event_router.register(r'waitinglistentries', waitinglist.WaitingListViewSet)
 event_router.register(r'checkinlists', checkin.CheckinListViewSet)
+event_router.register(r'checkins', checkin.CheckinViewSet)
 event_router.register(r'cartpositions', cart.CartPositionViewSet)
 event_router.register(r'scheduled_exports', exporters.ScheduledEventExportViewSet)
 event_router.register(r'exporters', exporters.EventExportersViewSet, basename='exporters')
@@ -109,6 +112,7 @@ item_router = routers.DefaultRouter()
 item_router.register(r'variations', item.ItemVariationViewSet)
 item_router.register(r'addons', item.ItemAddOnViewSet)
 item_router.register(r'bundles', item.ItemBundleViewSet)
+item_router.register(r'program_times', item.ItemProgramTimeViewSet)
 
 order_router = routers.DefaultRouter()
 order_router.register(r'payments', order.PaymentViewSet)
@@ -130,6 +134,8 @@ urlpatterns = [
             name="checkinrpc.redeem"),
     re_path(r'^organizers/(?P<organizer>[^/]+)/checkinrpc/search/$', checkin.CheckinRPCSearchView.as_view(),
             name="checkinrpc.search"),
+    re_path(r'^organizers/(?P<organizer>[^/]+)/checkinrpc/annul/$', checkin.CheckinRPCAnnulView.as_view(),
+            name="checkinrpc.annul"),
     re_path(r'^organizers/(?P<organizer>[^/]+)/settings/$', organizer.OrganizerSettingsView.as_view(),
             name="organizer.settings"),
     re_path(r'^organizers/(?P<organizer>[^/]+)/giftcards/(?P<giftcard>[^/]+)/', include(giftcard_router.urls)),

src/pretix/api/views/__init__.py

@@ -1,8 +1,8 @@
 #
 # This file is part of pretix (Community Edition).
 #
-# Copyright (C) 2014-2020 Raphael Michel and contributors
-# Copyright (C) 2020-2021 rami.io GmbH and contributors
+# Copyright (C) 2014-2020  Raphael Michel and contributors
+# Copyright (C) 2020-today pretix GmbH and contributors
 #
 # This program is free software: you can redistribute it and/or modify it under the terms of the GNU Affero General
 # Public License as published by the Free Software Foundation in version 3 of the License.

src/pretix/api/views/cart.py

@@ -1,8 +1,8 @@
 #
 # This file is part of pretix (Community Edition).
 #
-# Copyright (C) 2014-2020 Raphael Michel and contributors
-# Copyright (C) 2020-2021 rami.io GmbH and contributors
+# Copyright (C) 2014-2020  Raphael Michel and contributors
+# Copyright (C) 2020-today pretix GmbH and contributors
 #
 # This program is free software: you can redistribute it and/or modify it under the terms of the GNU Affero General
 # Public License as published by the Free Software Foundation in version 3 of the License.

src/pretix/api/views/checkin.py

@@ -1,8 +1,8 @@
 #
 # This file is part of pretix (Community Edition).
 #
-# Copyright (C) 2014-2020 Raphael Michel and contributors
-# Copyright (C) 2020-2021 rami.io GmbH and contributors
+# Copyright (C) 2014-2020  Raphael Michel and contributors
+# Copyright (C) 2020-today pretix GmbH and contributors
 #
 # This program is free software: you can redistribute it and/or modify it under the terms of the GNU Affero General
 # Public License as published by the Free Software Foundation in version 3 of the License.
@@ -20,12 +20,13 @@
 # <https://www.gnu.org/licenses/>.
 #
 import operator
+from datetime import timedelta
 from functools import reduce
 
 import django_filters
 from django.conf import settings
 from django.core.exceptions import ValidationError as BaseValidationError
-from django.db import transaction
+from django.db import connection, transaction
 from django.db.models import (
     Count, Exists, F, Max, OrderBy, OuterRef, Prefetch, Q, Subquery,
     prefetch_related_objects,
@@ -39,21 +40,24 @@ from django.utils.translation import gettext
 from django_filters.rest_framework import DjangoFilterBackend, FilterSet
 from django_scopes import scopes_disabled
 from packaging.version import parse
-from rest_framework import views, viewsets
+from rest_framework import status, views, viewsets
 from rest_framework.decorators import action
-from rest_framework.exceptions import PermissionDenied, ValidationError
+from rest_framework.exceptions import (
+    NotFound, PermissionDenied, ValidationError,
+)
 from rest_framework.fields import DateTimeField
 from rest_framework.generics import ListAPIView
 from rest_framework.permissions import SAFE_METHODS
 from rest_framework.response import Response
 
 from pretix.api.serializers.checkin import (
-    CheckinListSerializer, CheckinRPCRedeemInputSerializer,
-    MiniCheckinListSerializer,
+    CheckinListSerializer, CheckinRPCAnnulInputSerializer,
+    CheckinRPCRedeemInputSerializer, MiniCheckinListSerializer,
 )
 from pretix.api.serializers.item import QuestionSerializer
 from pretix.api.serializers.order import (
-    CheckinListOrderPositionSerializer, FailedCheckinSerializer,
+    CheckinListOrderPositionSerializer, CheckinSerializer,
+    FailedCheckinSerializer,
 )
 from pretix.api.views import RichOrderingFilter
 from pretix.api.views.order import OrderPositionFilter
@@ -66,6 +70,8 @@ from pretix.base.models.orders import PrintLog
 from pretix.base.services.checkin import (
     CheckInError, RequiredQuestionsError, SQLLogic, perform_checkin,
 )
+from pretix.base.signals import checkin_annulled
+from pretix.helpers import OF_SELF
 
 with scopes_disabled():
     class CheckinListFilter(FilterSet):
@@ -91,6 +97,16 @@ with scopes_disabled():
             )
             return queryset.filter(expr)
 
+    class CheckinFilter(FilterSet):
+        created_since = django_filters.IsoDateTimeFilter(field_name='created', lookup_expr='gte')
+        created_before = django_filters.IsoDateTimeFilter(field_name='created', lookup_expr='lt')
+        datetime_since = django_filters.IsoDateTimeFilter(field_name='datetime', lookup_expr='gte')
+        datetime_before = django_filters.IsoDateTimeFilter(field_name='datetime', lookup_expr='lt')
+
+        class Meta:
+            model = Checkin
+            fields = ['successful', 'error_reason', 'list', 'type', 'gate', 'device', 'auto_checked_in']
+
 
 class CheckinListViewSet(viewsets.ModelViewSet):
     serializer_class = CheckinListSerializer
@@ -165,6 +181,7 @@ class CheckinListViewSet(viewsets.ModelViewSet):
 
         if not serializer.validated_data.get('position'):
             kwargs['position'] = OrderPosition.all.filter(
+                order__event=self.request.event,
                 secret=serializer.validated_data['raw_barcode']
             ).first()
 
@@ -419,7 +436,7 @@ def _checkin_list_position_queryset(checkinlists, ignore_status=False, ignore_pr
 
 def _redeem_process(*, checkinlists, raw_barcode, answers_data, datetime, force, checkin_type, ignore_unpaid, nonce,
                     untrusted_input, user, auth, expand, pdf_data, request, questions_supported, canceled_supported,
-                    source_type='barcode', legacy_url_support=False, simulate=False, gate=None):
+                    source_type='barcode', legacy_url_support=False, simulate=False, gate=None, use_order_locale=False):
     if not checkinlists:
         raise ValidationError('No check-in list passed.')
 
@@ -486,11 +503,11 @@ def _redeem_process(*, checkinlists, raw_barcode, answers_data, datetime, force,
     #    with respecting the force option), or it's a reusable medium (-> proceed with that)
     if not op_candidates:
         try:
-            media = ReusableMedium.objects.select_related('linked_orderposition').active().get(
+            media = ReusableMedium.objects.prefetch_related('linked_orderpositions').active().get(
                 organizer_id=checkinlists[0].event.organizer_id,
                 type=source_type,
                 identifier=raw_barcode,
-                linked_orderposition__isnull=False,
+                linked_orderpositions__isnull=False,
             )
             raw_barcode_for_checkin = raw_barcode
         except ReusableMedium.DoesNotExist:
@@ -593,7 +610,7 @@ def _redeem_process(*, checkinlists, raw_barcode, answers_data, datetime, force,
                     'list': MiniCheckinListSerializer(list_by_event[revoked_matches[0].event_id]).data,
                 }, status=400)
         else:
-            if media.linked_orderposition.order.event_id not in list_by_event:
+            if not any(event_id in list_by_event for event_id in media.linked_orderpositions.values_list("order__event_id", flat=True)):
                 # Medium exists but connected ticket is for the wrong event
                 if not simulate:
                     checkinlists[0].event.log_action('pretix.event.checkin.unknown', data={
@@ -619,9 +636,11 @@ def _redeem_process(*, checkinlists, raw_barcode, answers_data, datetime, force,
                     'checkin_texts': [],
                     'list': MiniCheckinListSerializer(checkinlists[0]).data,
                 }, status=404)
-            op_candidates = [media.linked_orderposition]
-            if list_by_event[media.linked_orderposition.order.event_id].addon_match:
-                op_candidates += list(media.linked_orderposition.addons.all())
+            op_candidates = []
+            for op in media.linked_orderpositions.all().prefetch_related("order"):
+                op_candidates.append(op)
+                if list_by_event[op.order.event_id].addon_match:
+                    op_candidates += list(op.addons.all())
 
     # 3. Handle the "multiple options found" case: Except for the unlikely case of a secret being also a valid primary
     #    key on the same list, we're probably dealing with the ``addon_match`` case here and need to figure out
@@ -693,7 +712,11 @@ def _redeem_process(*, checkinlists, raw_barcode, answers_data, datetime, force,
                     pass
 
     # 6. Pass to our actual check-in logic
-    with language(op.order.event.settings.locale):
+    if use_order_locale:
+        locale = op.order.locale
+    else:
+        locale = op.order.event.settings.locale
+    with language(locale):
         try:
             perform_checkin(
                 op=op,
@@ -808,7 +831,7 @@ class CheckinListPositionViewSet(viewsets.ReadOnlyModelViewSet):
         ctx = super().get_serializer_context()
         ctx['event'] = self.request.event
         ctx['expand'] = self.request.query_params.getlist('expand')
-        ctx['pdf_data'] = self.request.query_params.get('pdf_data', 'false') == 'true'
+        ctx['pdf_data'] = self.request.query_params.get('pdf_data', 'false').lower() == 'true'
         return ctx
 
     def get_filterset_kwargs(self):
@@ -827,9 +850,9 @@ class CheckinListPositionViewSet(viewsets.ReadOnlyModelViewSet):
     def get_queryset(self, ignore_status=False, ignore_products=False):
         qs = _checkin_list_position_queryset(
             [self.checkinlist],
-            ignore_status=self.request.query_params.get('ignore_status', 'false') == 'true' or ignore_status,
+            ignore_status=self.request.query_params.get('ignore_status', 'false').lower() == 'true' or ignore_status,
             ignore_products=ignore_products,
-            pdf_data=self.request.query_params.get('pdf_data', 'false') == 'true',
+            pdf_data=self.request.query_params.get('pdf_data', 'false').lower() == 'true',
             expand=self.request.query_params.getlist('expand'),
         )
 
@@ -871,7 +894,7 @@ class CheckinListPositionViewSet(viewsets.ReadOnlyModelViewSet):
             user=self.request.user,
             auth=self.request.auth,
             expand=self.request.query_params.getlist('expand'),
-            pdf_data=self.request.query_params.get('pdf_data', 'false') == 'true',
+            pdf_data=self.request.query_params.get('pdf_data', 'false').lower() == 'true',
             questions_supported=self.request.data.get('questions_supported', True),
             canceled_supported=self.request.data.get('canceled_supported', False),
             request=self.request,  # this is not clean, but we need it in the serializers for URL generation
@@ -906,8 +929,9 @@ class CheckinRPCRedeemView(views.APIView):
             user=self.request.user,
             auth=self.request.auth,
             expand=self.request.query_params.getlist('expand'),
-            pdf_data=self.request.query_params.get('pdf_data', 'false') == 'true',
+            pdf_data=self.request.query_params.get('pdf_data', 'false').lower() == 'true',
             questions_supported=s.validated_data['questions_supported'],
+            use_order_locale=s.validated_data['use_order_locale'],
             canceled_supported=True,
             request=self.request,  # this is not clean, but we need it in the serializers for URL generation
             legacy_url_support=False,
@@ -983,9 +1007,9 @@ class CheckinRPCSearchView(ListAPIView):
     def get_queryset(self, ignore_status=False, ignore_products=False):
         qs = _checkin_list_position_queryset(
             self.lists,
-            ignore_status=self.request.query_params.get('ignore_status', 'false') == 'true' or ignore_status,
+            ignore_status=self.request.query_params.get('ignore_status', 'false').lower() == 'true' or ignore_status,
             ignore_products=ignore_products,
-            pdf_data=self.request.query_params.get('pdf_data', 'false') == 'true',
+            pdf_data=self.request.query_params.get('pdf_data', 'false').lower() == 'true',
             expand=self.request.query_params.getlist('expand'),
         )
 
@@ -993,3 +1017,101 @@ class CheckinRPCSearchView(ListAPIView):
             qs = qs.none()
 
         return qs
+
+
+class CheckinRPCAnnulView(views.APIView):
+    def post(self, request, *args, **kwargs):
+        if isinstance(self.request.auth, (TeamAPIToken, Device)):
+            events = self.request.auth.get_events_with_permission(('can_change_orders', 'can_checkin_orders'))
+        elif self.request.user.is_authenticated:
+            events = self.request.user.get_events_with_permission(('can_change_orders', 'can_checkin_orders'), self.request).filter(
+                organizer=self.request.organizer
+            )
+        else:
+            raise ValueError("unknown authentication method")
+
+        s = CheckinRPCAnnulInputSerializer(data=request.data, context={'events': events})
+        s.is_valid(raise_exception=True)
+
+        with transaction.atomic():
+            try:
+                qs = Checkin.all.all()
+                if isinstance(request.auth, Device):
+                    qs = qs.filter(device=request.auth)
+                ci = qs.select_for_update(
+                    of=OF_SELF,
+                ).select_related("position", "position__order", "position__order__event").get(
+                    list__in=s.validated_data['lists'],
+                    nonce=s.validated_data['nonce'],
+                )
+                if connection.features.has_select_for_update_of and ci.position_id:
+                    # Lock position as well, can't do it with of= above because relation is nullable
+                    OrderPosition.objects.select_for_update(of=OF_SELF).get(pk=ci.position_id)
+
+                if not ci.successful or not ci.position:
+                    raise ValidationError("Cannot annul an unsuccessful checkin")
+            except Checkin.DoesNotExist:
+                raise NotFound("No check-in found based on nonce")
+            except Checkin.MultipleObjectsReturned:
+                raise ValidationError("Multiple check-ins found based on nonce")
+
+            annulment_time = s.validated_data.get("datetime") or now()
+
+            if annulment_time - ci.datetime > timedelta(minutes=15):
+                # Compare to sent datetime, which makes this cheatable, but allows offline annulment of checkins
+                ci.position.order.log_action('pretix.event.checkin.annulment.ignored', data={
+                    'checkin': ci.pk,
+                    'position': ci.position.id,
+                    'positionid': ci.position.positionid,
+                    'datetime': annulment_time,
+                    'error_explanation': s.validated_data.get("error_explanation"),
+                    'type': ci.type,
+                    'list': ci.list_id,
+                }, user=request.user, auth=request.auth)
+                return Response({
+                    "non_field_errors": ["Annulment is not allowed more than 15 minutes after check-in"]
+                }, status=status.HTTP_400_BAD_REQUEST)
+
+            if ci.device and ci.device != request.auth:
+                return Response({
+                    "non_field_errors": ["Annulment is only allowed from the same device"]
+                }, status=status.HTTP_400_BAD_REQUEST)
+
+            ci.successful = False
+            ci.error_reason = Checkin.REASON_ANNULLED
+            ci.error_explanation = s.validated_data.get("error_explanation")
+            ci.save(update_fields=["successful", "error_reason", "error_explanation"])
+            ci.position.order.log_action('pretix.event.checkin.annulled', data={
+                'checkin': ci.pk,
+                'position': ci.position.id,
+                'positionid': ci.position.positionid,
+                'datetime': annulment_time,
+                'error_explanation': s.validated_data.get("error_explanation"),
+                'type': ci.type,
+                'list': ci.list_id,
+            }, user=request.user, auth=request.auth)
+            checkin_annulled.send(ci.position.order.event, checkin=ci)
+
+        return Response({"status": "ok"}, status=status.HTTP_200_OK)
+
+
+class CheckinViewSet(viewsets.ReadOnlyModelViewSet):
+    serializer_class = CheckinSerializer
+    queryset = Checkin.all.none()
+    filter_backends = (DjangoFilterBackend, RichOrderingFilter)
+    filterset_class = CheckinFilter
+    ordering = ('created', 'id')
+    ordering_fields = ('created', 'datetime', 'id',)
+    permission = 'can_view_orders'
+
+    def get_queryset(self):
+        qs = Checkin.all.filter().select_related(
+            "position",
+            "device",
+        )
+        return qs
+
+    def get_serializer_context(self):
+        ctx = super().get_serializer_context()
+        ctx['event'] = self.request.event
+        return ctx

src/pretix/api/views/device.py

@@ -1,8 +1,8 @@
 #
 # This file is part of pretix (Community Edition).
 #
-# Copyright (C) 2014-2020 Raphael Michel and contributors
-# Copyright (C) 2020-2021 rami.io GmbH and contributors
+# Copyright (C) 2014-2020  Raphael Michel and contributors
+# Copyright (C) 2020-today pretix GmbH and contributors
 #
 # This program is free software: you can redistribute it and/or modify it under the terms of the GNU Affero General
 # Public License as published by the Free Software Foundation in version 3 of the License.

src/pretix/api/views/discount.py

@@ -1,8 +1,8 @@
 #
 # This file is part of pretix (Community Edition).
 #
-# Copyright (C) 2014-2020 Raphael Michel and contributors
-# Copyright (C) 2020-2021 rami.io GmbH and contributors
+# Copyright (C) 2014-2020  Raphael Michel and contributors
+# Copyright (C) 2020-today pretix GmbH and contributors
 #
 # This program is free software: you can redistribute it and/or modify it under the terms of the GNU Affero General
 # Public License as published by the Free Software Foundation in version 3 of the License.

src/pretix/api/views/event.py

@@ -1,8 +1,8 @@
 #
 # This file is part of pretix (Community Edition).
 #
-# Copyright (C) 2014-2020 Raphael Michel and contributors
-# Copyright (C) 2020-2021 rami.io GmbH and contributors
+# Copyright (C) 2014-2020  Raphael Michel and contributors
+# Copyright (C) 2020-today pretix GmbH and contributors
 #
 # This program is free software: you can redistribute it and/or modify it under the terms of the GNU Affero General
 # Public License as published by the Free Software Foundation in version 3 of the License.
@@ -580,6 +580,11 @@ class TaxRuleViewSet(ConditionalListView, viewsets.ModelViewSet):
         )
         super().perform_destroy(instance)
 
+    def get_serializer_context(self):
+        ctx = super().get_serializer_context()
+        ctx["event"] = self.request.event
+        return ctx
+
 
 class ItemMetaPropertiesViewSet(viewsets.ModelViewSet):
     serializer_class = ItemMetaPropertiesSerializer

src/pretix/api/views/exporters.py

@@ -1,8 +1,8 @@
 #
 # This file is part of pretix (Community Edition).
 #
-# Copyright (C) 2014-2020 Raphael Michel and contributors
-# Copyright (C) 2020-2021 rami.io GmbH and contributors
+# Copyright (C) 2014-2020  Raphael Michel and contributors
+# Copyright (C) 2020-today pretix GmbH and contributors
 #
 # This program is free software: you can redistribute it and/or modify it under the terms of the GNU Affero General
 # Public License as published by the Free Software Foundation in version 3 of the License.

src/pretix/api/views/idempotency.py

@@ -1,8 +1,8 @@
 #
 # This file is part of pretix (Community Edition).
 #
-# Copyright (C) 2014-2020 Raphael Michel and contributors
-# Copyright (C) 2020-2021 rami.io GmbH and contributors
+# Copyright (C) 2014-2020  Raphael Michel and contributors
+# Copyright (C) 2020-today pretix GmbH and contributors
 #
 # This program is free software: you can redistribute it and/or modify it under the terms of the GNU Affero General
 # Public License as published by the Free Software Foundation in version 3 of the License.

src/pretix/api/views/item.py

@@ -1,8 +1,8 @@
 #
 # This file is part of pretix (Community Edition).
 #
-# Copyright (C) 2014-2020 Raphael Michel and contributors
-# Copyright (C) 2020-2021 rami.io GmbH and contributors
+# Copyright (C) 2014-2020  Raphael Michel and contributors
+# Copyright (C) 2020-today pretix GmbH and contributors
 #
 # This program is free software: you can redistribute it and/or modify it under the terms of the GNU Affero General
 # Public License as published by the Free Software Foundation in version 3 of the License.
@@ -40,19 +40,19 @@ from django_filters.rest_framework import DjangoFilterBackend, FilterSet
 from django_scopes import scopes_disabled
 from rest_framework import viewsets
 from rest_framework.decorators import action
-from rest_framework.exceptions import PermissionDenied
+from rest_framework.exceptions import PermissionDenied, ValidationError
 from rest_framework.response import Response
 
 from pretix.api.pagination import TotalOrderingFilter
 from pretix.api.serializers.item import (
     ItemAddOnSerializer, ItemBundleSerializer, ItemCategorySerializer,
-    ItemSerializer, ItemVariationSerializer, QuestionOptionSerializer,
-    QuestionSerializer, QuotaSerializer,
+    ItemProgramTimeSerializer, ItemSerializer, ItemVariationSerializer,
+    QuestionOptionSerializer, QuestionSerializer, QuotaSerializer,
 )
 from pretix.api.views import ConditionalListView
 from pretix.base.models import (
-    CartPosition, Item, ItemAddOn, ItemBundle, ItemCategory, ItemVariation,
-    Question, QuestionOption, Quota,
+    CartPosition, Item, ItemAddOn, ItemBundle, ItemCategory, ItemProgramTime,
+    ItemVariation, Question, QuestionOption, Quota,
 )
 from pretix.base.services.quotas import QuotaAvailability
 from pretix.helpers.dicts import merge_dicts
@@ -279,6 +279,59 @@ class ItemBundleViewSet(viewsets.ModelViewSet):
         )
 
 
+class ItemProgramTimeViewSet(viewsets.ModelViewSet):
+    serializer_class = ItemProgramTimeSerializer
+    queryset = ItemProgramTime.objects.none()
+    filter_backends = (DjangoFilterBackend, TotalOrderingFilter,)
+    ordering_fields = ('id',)
+    ordering = ('id',)
+    permission = None
+    write_permission = 'can_change_items'
+
+    @cached_property
+    def item(self):
+        return get_object_or_404(Item, pk=self.kwargs['item'], event=self.request.event)
+
+    def get_queryset(self):
+        if self.request.event.has_subevents:
+            raise ValidationError('You cannot use program times on an event series.')
+        return self.item.program_times.all()
+
+    def get_serializer_context(self):
+        ctx = super().get_serializer_context()
+        ctx['event'] = self.request.event
+        ctx['item'] = self.item
+        return ctx
+
+    def perform_create(self, serializer):
+        item = get_object_or_404(Item, pk=self.kwargs['item'], event=self.request.event)
+        serializer.save(item=item)
+        item.log_action(
+            'pretix.event.item.program_times.added',
+            user=self.request.user,
+            auth=self.request.auth,
+            data=merge_dicts(self.request.data, {'id': serializer.instance.pk})
+        )
+
+    def perform_update(self, serializer):
+        serializer.save(event=self.request.event)
+        serializer.instance.item.log_action(
+            'pretix.event.item.program_times.changed',
+            user=self.request.user,
+            auth=self.request.auth,
+            data=merge_dicts(self.request.data, {'id': serializer.instance.pk})
+        )
+
+    def perform_destroy(self, instance):
+        super().perform_destroy(instance)
+        instance.item.log_action(
+            'pretix.event.item.program_times.removed',
+            user=self.request.user,
+            auth=self.request.auth,
+            data={'start': instance.start, 'end': instance.end}
+        )
+
+
 class ItemAddOnViewSet(viewsets.ModelViewSet):
     serializer_class = ItemAddOnSerializer
     queryset = ItemAddOn.objects.none()
@@ -485,8 +538,17 @@ class QuestionOptionViewSet(viewsets.ModelViewSet):
         super().perform_destroy(instance)
 
 
+class NumberInFilter(django_filters.BaseInFilter, django_filters.NumberFilter):
+    pass
+
+
 with scopes_disabled():
     class QuotaFilter(FilterSet):
+        items__in = NumberInFilter(
+            field_name='items__id',
+            lookup_expr='in',
+        )
+
         class Meta:
             model = Quota
             fields = {
@@ -508,7 +570,7 @@ class QuotaViewSet(ConditionalListView, viewsets.ModelViewSet):
         return self.request.event.quotas.all()
 
     def list(self, request, *args, **kwargs):
-        queryset = self.filter_queryset(self.get_queryset())
+        queryset = self.filter_queryset(self.get_queryset()).distinct()
 
         page = self.paginate_queryset(queryset)
 

src/pretix/api/views/media.py

@@ -1,8 +1,8 @@
 #
 # This file is part of pretix (Community Edition).
 #
-# Copyright (C) 2014-2020 Raphael Michel and contributors
-# Copyright (C) 2020-2021 rami.io GmbH and contributors
+# Copyright (C) 2014-2020  Raphael Michel and contributors
+# Copyright (C) 2020-today pretix GmbH and contributors
 #
 # This program is free software: you can redistribute it and/or modify it under the terms of the GNU Affero General
 # Public License as published by the Free Software Foundation in version 3 of the License.
@@ -53,10 +53,12 @@ with scopes_disabled():
         customer = django_filters.CharFilter(field_name='customer__identifier')
         updated_since = django_filters.IsoDateTimeFilter(field_name='updated', lookup_expr='gte')
         created_since = django_filters.IsoDateTimeFilter(field_name='created', lookup_expr='gte')
+        # backwards-compatible
+        linked_orderposition = django_filters.NumberFilter(field_name='linked_orderpositions__id')
 
         class Meta:
             model = ReusableMedium
-            fields = ['identifier', 'type', 'active', 'customer', 'linked_orderposition', 'linked_giftcard']
+            fields = ['identifier', 'type', 'active', 'customer', 'linked_orderpositions', 'linked_giftcard']
 
 
 class ReusableMediaViewSet(viewsets.ModelViewSet):
@@ -75,7 +77,7 @@ class ReusableMediaViewSet(viewsets.ModelViewSet):
         ).order_by().values('card').annotate(s=Sum('value')).values('s')
         return self.request.organizer.reusable_media.prefetch_related(
             Prefetch(
-                'linked_orderposition',
+                'linked_orderpositions',
                 queryset=OrderPosition.objects.select_related(
                     'order', 'order__event', 'order__event__organizer', 'seat',
                 ).prefetch_related(
@@ -155,7 +157,6 @@ class ReusableMediaViewSet(viewsets.ModelViewSet):
                         type=s.validated_data["type"],
                         identifier=s.validated_data["identifier"],
                     )
-                m.linked_orderposition = None  # not relevant for cross-organizer
                 m.customer = None  # not relevant for cross-organizer
                 s = self.get_serializer(m)
                 return Response({"result": s.data})

src/pretix/api/views/oauth.py

@@ -1,8 +1,8 @@
 #
 # This file is part of pretix (Community Edition).
 #
-# Copyright (C) 2014-2020 Raphael Michel and contributors
-# Copyright (C) 2020-2021 rami.io GmbH and contributors
+# Copyright (C) 2014-2020  Raphael Michel and contributors
+# Copyright (C) 2020-today pretix GmbH and contributors
 #
 # This program is free software: you can redistribute it and/or modify it under the terms of the GNU Affero General
 # Public License as published by the Free Software Foundation in version 3 of the License.