Bump to 2026.6.2

Fix tests after hierarkey update
Bump hierarkey to 2.0.2
2026-10-04 19:44:42 +00:00 · 2026-09-29 14:23:42 +02:00 · 2026-09-29 13:52:12 +02:00 · 2026-09-29 13:52:11 +02:00 · 2026-09-29 13:40:38 +02:00 · 2026-09-29 13:40:18 +02:00
310 changed files with 191480 additions and 162147 deletions
@@ -10,9 +10,9 @@ tests:
        - cd src
        - python manage.py check
        - make all compress
-        - PRETIX_CONFIG_FILE=tests/ci_sqlite.cfg py.test -n 3 tests --maxfail=100
+        - PRETIX_CONFIG_FILE=tests/ci_sqlite.cfg py.test -n 3 tests --ignore=tests/e2e --maxfail=100
    except:
-        - pypi
+        - '/^v.*$/'
 pypi:
    stage: release
    image:
@@ -35,7 +35,7 @@ pypi:
        - twine check dist/*
        - twine upload dist/*
    only:
-        - pypi
+        - '/^v.*$/'
    artifacts:
        paths:
            - src/dist/
@@ -1 +1 @@
-17
+24
@@ -57,8 +57,7 @@ COPY vite.config.ts /pretix/vite.config.ts

 RUN pip3 install -U \
        pip \
-        setuptools \
-        wheel && \
+        setuptools && \
    cd /pretix && \
    PRETIX_DOCKER_BUILD=TRUE pip3 install \
        -e ".[memcached]" \
@@ -192,7 +192,7 @@ Cart position endpoints
   * ``attendee_email`` (optional)
   * ``subevent`` (optional)
   * ``expires`` (optional)
-   * ``includes_tax`` (optional, **deprecated**, do not use, will be removed)
+   * ``includes_tax`` (optional, **DEPRECATED**, do not use, will be removed)
   * ``sales_channel`` (optional)
   * ``voucher`` (optional, expect a voucher code)
   * ``addons`` (optional, expect a list of nested objects of cart positions)
@@ -46,12 +46,14 @@ 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 string exchange_medium_type: To perform an exchange to a reusable medium, pass the type of the new reusable medium
+   :<json string exchange_medium_identifier: To perform an exchange to a reusable media, pass the identifier of the new medium
   :<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 status: ``"ok"``, ``"incomplete"``, ``"exchange"``, 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.
   :>json object position: Copy of the matching order position (if any was found). The contents are the same as the
@@ -67,6 +69,8 @@ Checking a ticket in
   :>json object list: Excerpt of information about the matching :ref:`check-in list <rest-checkinlists>` (if any was found),
                       including the attributes ``id``, ``name``, ``event``, ``subevent``, and ``include_pending``.
   :>json object questions: List of questions to be answered for check-in, only set on status ``"incomplete"``.
+   :>json object media_policy: Reusable media policy (see documentation on items), only set on status ``"exchange"``.
+   :>json object media_type: Reusable media type (see documentation on items), only set on status ``"exchange"``.

   **Example request**:

@@ -224,6 +228,9 @@ Checking a ticket in
   * ``ambiguous`` - Multiple tickets match scan, rejected.
   * ``revoked`` - Ticket code has been revoked.
   * ``unapproved`` - Order has not yet been approved.
+   * ``already_exchanged`` - Ticket already has been exchanged for a reusable medium that must now be used for check-in.
+   * ``medium_invalid`` - Reusable medium identifier given was not found or is not valid.
+   * ``medium_exists`` - Reusable medium identifier already exists, but expected to be new.
   * ``error`` - Internal error.

   In case of reason ``rules`` and ``invalid_time``, there might be an additional response field ``reason_explanation``
@@ -602,7 +602,8 @@ Order position endpoints

      We no longer recommend using this API if you're building a ticket scanning application, as it has a few design
      flaws that can lead to `security issues`_ or compatibility issues due to barcode content characters that are not
-      URL-safe. We recommend to use our new :ref:`check-in API <rest-checkin>` instead.
+      URL-safe. We recommend to use our new :ref:`check-in API <rest-checkin>` instead. Advanced features like medium
+      exchange are only supported on the new API.

   :query boolean untrusted_input: If set to true, the lookup parameter is **always** interpreted as a ``secret``, never
                                   as an ``id``. This should be always set if you are passing through untrusted, scanned
@@ -741,6 +742,9 @@ Order position endpoints
   * ``ambiguous`` - Multiple tickets match scan, rejected.
   * ``revoked`` - Ticket code has been revoked.
   * ``unapproved`` - Order has not yet been approved.
+   * ``already_exchanged`` - Ticket already has been exchanged for a reusable medium that must now be used for check-in.
+   * ``medium_invalid`` - Reusable medium identifier given was not found and could not be automatically created.
+   * ``medium_exists`` - Reusable medium identifier already exists, but expected to be new.

   In case of reason ``rules`` or ``invalid_time``, there might be an additional response field ``reason_explanation``
   with a human-readable description of the violated rules. However, that field can also be missing or be ``null``.
@@ -131,7 +131,7 @@ allow_waitinglist                       boolean                    If ``false``,
                                                                   product when it is sold out.
 issue_giftcard                          boolean                    If ``true``, buying this product will yield a gift card.
 media_policy                            string                     Policy on how to handle reusable media (experimental feature).
-                                                                   Possible values are ``null``, ``"new"``, ``"reuse"``, and ``"reuse_or_new"``.
+                                                                   Possible values are ``null``, ``"new"``, ``"reuse"``, ``"reuse_or_new"``, ``"append"``, and ``"append_or_new"``.
 media_type                              string                     Type of reusable media to work on (experimental feature). See :ref:`rest-reusablemedia` for possible choices.
 show_quota_left                         boolean                    Publicly show how many tickets are still available.
                                                                   If this is ``null``, the event default is used.
@@ -1069,7 +1069,7 @@ Creating orders
      * ``valid_from`` (optional, if both ``valid_from`` and ``valid_until`` are **missing** (not ``null``) the availability will be computed from the given product)
      * ``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)
+      * ``use_reusable_medium`` (optional, causes the new ticket to be connected to 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``

@@ -21,12 +21,16 @@ 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``.
+claim_token                           string                     Secret token to claim ownership of 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 integers           Internal IDs of tickets this medium is linked to.
+linked_orderposition                  integer                    **DEPRECATED.** ID of the ticket the medium is linked to, if it is linked to 
+                                                                 only one ticket. ``null``, if the medium is linked to none or multiple tickets.
 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 +43,14 @@ Existing media types are:
 - ``nfc_uid``
 - ``nfc_mf0aes``

+
+.. versionchanged:: 2026.5
+
+   The ``claim_token``, ``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 +89,7 @@ Endpoints
            "active": True,
            "expires": None,
            "customer": None,
+            "linked_orderpositions": [],
            "linked_orderposition": None,
            "linked_giftcard": None,
            "notes": None,
@@ -92,10 +105,13 @@ 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. Any 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 +150,7 @@ Endpoints
        "active": True,
        "expires": None,
        "customer": None,
+        "linked_orderpositions": [],
        "linked_orderposition": None,
        "linked_giftcard": None,
        "notes": None,
@@ -191,6 +208,7 @@ Endpoints
        "active": True,
        "expires": None,
        "customer": None,
+        "linked_orderpositions": [],
        "linked_orderposition": None,
        "linked_giftcard": None,
        "notes": None,
@@ -198,9 +216,9 @@ 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`` each 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 +245,7 @@ Endpoints
        "active": True,
        "expires": None,
        "customer": None,
+        "linked_orderpositions": [],
        "linked_orderposition": None,
        "linked_giftcard": None,
        "notes": None,
@@ -251,6 +270,7 @@ Endpoints
        "active": True,
        "expires": None,
        "customer": None,
+        "linked_orderpositions": [],
        "linked_orderposition": None,
        "linked_giftcard": None,
        "notes": None,
@@ -258,7 +278,7 @@ 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 +307,7 @@ Endpoints
      Content-Length: 94

      {
-        "linked_orderposition": 13
+        "linked_orderpositions": [13, 29]
      }

   **Example response**:
@@ -308,7 +328,8 @@ 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 +337,7 @@ 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
@@ -64,8 +64,8 @@ Backend

 .. automodule:: pretix.control.signals
   :members: nav_event, html_head, html_page_start, quota_detail_html, nav_topbar, nav_global, nav_organizer, nav_event_settings,
-             order_info, event_settings_widget, oauth_application_registered, order_position_buttons, subevent_forms,
-             item_formsets, order_search_filter_q, order_search_forms
+             order_info, order_approve_info, event_settings_widget, oauth_application_registered,
+             order_position_buttons, subevent_forms, item_formsets, order_search_filter_q, order_search_forms, subevent_detail_html

 .. automodule:: pretix.base.signals
   :no-index:
@@ -81,7 +81,7 @@ is a python method that emulates a behavior similar to ``reverse``:

 If you need to communicate the URL externally, you can use a different method to ensure that it is always an absolute URL:

-.. autofunction:: pretix.multidomain.urlreverse.build_absolute_uri
+.. autofunction:: pretix.multidomain.urlreverse.eventreverse_absolute

 In addition, there is a template tag that works similar to ``url`` but takes an event or organizer object
 as its first argument and can be used like this::
@@ -370,14 +370,14 @@
      "license": "MIT"
    },
    "node_modules/@napi-rs/wasm-runtime": {
-      "version": "1.1.4",
-      "resolved": "https://registry.npmjs.org/@napi-rs/wasm-runtime/-/wasm-runtime-1.1.4.tgz",
-      "integrity": "sha512-3NQNNgA1YSlJb/kMH1ildASP9HW7/7kYnRI2szWJaofaS1hWmbGI4H+d3+22aGzXXN9IJ+n+GiFVcGipJP18ow==",
+      "version": "1.1.5",
+      "resolved": "https://registry.npmjs.org/@napi-rs/wasm-runtime/-/wasm-runtime-1.1.5.tgz",
+      "integrity": "sha512-AWPoBRJ9tsnVhor4sjO7rkni+7p+2IAEFj6cx06UgP10jkQHqay/36uRV/bFkgrh18D9vb4cr8Q0Pthskgzy+Q==",
      "dev": true,
      "license": "MIT",
      "optional": true,
      "dependencies": {
-        "@tybys/wasm-util": "^0.10.1"
+        "@tybys/wasm-util": "^0.10.2"
      },
      "funding": {
        "type": "github",
@@ -427,9 +427,9 @@
      }
    },
    "node_modules/@oxc-project/types": {
-      "version": "0.129.0",
-      "resolved": "https://registry.npmjs.org/@oxc-project/types/-/types-0.129.0.tgz",
-      "integrity": "sha512-3oz8m3FGdr2nDXVqmFUw7jolKliC4MoyXYIG2c7gpjBnzUWQpUGIYcXYKxTdTi+N2jusvt610ckTMkxdwHkYEg==",
+      "version": "0.133.0",
+      "resolved": "https://registry.npmjs.org/@oxc-project/types/-/types-0.133.0.tgz",
+      "integrity": "sha512-KzkdCd6Uxqnf6l3HOw1xfatAlUURA0g14cvBYFyJ5SaNOQbOUvBr9PKArcPcrNIeRsBdgcUzOGrhKveVpvOIGA==",
      "dev": true,
      "license": "MIT",
      "funding": {
@@ -758,9 +758,9 @@
      }
    },
    "node_modules/@rolldown/binding-android-arm64": {
-      "version": "1.0.0",
-      "resolved": "https://registry.npmjs.org/@rolldown/binding-android-arm64/-/binding-android-arm64-1.0.0.tgz",
-      "integrity": "sha512-TWMZnRLMe63C2Lhyicviu7ZHaU4kxa6PS3rofvc9GmcvptzNN11BcfQ4Sl7MwTOsisQoa2keB/EBdNCAnUo8vA==",
+      "version": "1.0.3",
+      "resolved": "https://registry.npmjs.org/@rolldown/binding-android-arm64/-/binding-android-arm64-1.0.3.tgz",
+      "integrity": "sha512-454rs7jHngixp/NMxd5srYD57OnzSlZ/eFTETjORQHLwJG1lRtmNOJcBerZlfu4GjKqeq8aCCIQrMdHyhI51Hw==",
      "cpu": [
        "arm64"
      ],
@@ -775,9 +775,9 @@
      }
    },
    "node_modules/@rolldown/binding-darwin-arm64": {
-      "version": "1.0.0",
-      "resolved": "https://registry.npmjs.org/@rolldown/binding-darwin-arm64/-/binding-darwin-arm64-1.0.0.tgz",
-      "integrity": "sha512-6XcD+8k0gPVItNagEw78/qqcBDwKcwDYS8V2hRmVsfUSIrd8cWe/CBvRDI5toqFyPfj+FJr6t8U6Xj2P2prEew==",
+      "version": "1.0.3",
+      "resolved": "https://registry.npmjs.org/@rolldown/binding-darwin-arm64/-/binding-darwin-arm64-1.0.3.tgz",
+      "integrity": "sha512-PcAhP+ynjURNyy8SKGl5DQP94aGuB/7JrXJb/t7P+hanXvQVMWzUvRRhBAcg/lNRadBhoUPqSoP4xw5tR/KBEA==",
      "cpu": [
        "arm64"
      ],
@@ -792,9 +792,9 @@
      }
    },
    "node_modules/@rolldown/binding-darwin-x64": {
-      "version": "1.0.0",
-      "resolved": "https://registry.npmjs.org/@rolldown/binding-darwin-x64/-/binding-darwin-x64-1.0.0.tgz",
-      "integrity": "sha512-iN/tWVXRQDWvmZlKdceP1Dwug9GDpEymhb9p4xnEe6zvCg5lFmzVljl+1qR1NVx3yfGpr2Na+CuLmv5IU8uzfQ==",
+      "version": "1.0.3",
+      "resolved": "https://registry.npmjs.org/@rolldown/binding-darwin-x64/-/binding-darwin-x64-1.0.3.tgz",
+      "integrity": "sha512-9YpfeUvSE2RS7wysJ81uOZkXJz7f7Q55H2Gvp3VEw/EsahqDtrphrZ0EwDLK5vvKOzaCrBsjF8JmnMLcUt78Gg==",
      "cpu": [
        "x64"
      ],
@@ -809,9 +809,9 @@
      }
    },
    "node_modules/@rolldown/binding-freebsd-x64": {
-      "version": "1.0.0",
-      "resolved": "https://registry.npmjs.org/@rolldown/binding-freebsd-x64/-/binding-freebsd-x64-1.0.0.tgz",
-      "integrity": "sha512-jjQMDvvwSOuhOwMszD/klSOjyWMM3zI64hWTj9KT5x4MxRbZAf+7vLQ6qouRhtsLVFHr3f0ILaJAfgENPiQdAQ==",
+      "version": "1.0.3",
+      "resolved": "https://registry.npmjs.org/@rolldown/binding-freebsd-x64/-/binding-freebsd-x64-1.0.3.tgz",
+      "integrity": "sha512-yB1IlAsSNHncV6SCTL27/MVGR5htvQsoGxIv5KMGXALp+Ll1wYsn+x98M9MW7qa+NdSbvrrY7ANI4wLJ0n1e6g==",
      "cpu": [
        "x64"
      ],
@@ -826,9 +826,9 @@
      }
    },
    "node_modules/@rolldown/binding-linux-arm-gnueabihf": {
-      "version": "1.0.0",
-      "resolved": "https://registry.npmjs.org/@rolldown/binding-linux-arm-gnueabihf/-/binding-linux-arm-gnueabihf-1.0.0.tgz",
-      "integrity": "sha512-d//Dtg2x6/m3mbV64yUGNnDGNZaDGRpDLLNGerHQUVObuNaIQaaDp25yUiqGXtHEXX+NP2d0wAlmKgpYgIAJ2A==",
+      "version": "1.0.3",
+      "resolved": "https://registry.npmjs.org/@rolldown/binding-linux-arm-gnueabihf/-/binding-linux-arm-gnueabihf-1.0.3.tgz",
+      "integrity": "sha512-Yi30IVAAfLUCy2MseFjbB1jAMDl1VMCAas5StnYp8da9+CKvMd2H2cbEjWcw5NPaPqzvYkVIaF1nNUG+b7u/sw==",
      "cpu": [
        "arm"
      ],
@@ -843,13 +843,16 @@
      }
    },
    "node_modules/@rolldown/binding-linux-arm64-gnu": {
-      "version": "1.0.0",
-      "resolved": "https://registry.npmjs.org/@rolldown/binding-linux-arm64-gnu/-/binding-linux-arm64-gnu-1.0.0.tgz",
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+      "version": "1.0.3",
+      "resolved": "https://registry.npmjs.org/@rolldown/binding-linux-arm64-gnu/-/binding-linux-arm64-gnu-1.0.3.tgz",
+      "integrity": "sha512-jsO7R8To+AdlYgUmN5sHSCZbfhtMBkO0WUx8iORQnPcMMdgr7qM2DQmMwgabs3GhNztdmoKkMKQFHD6DTMCIQw==",
      "cpu": [
        "arm64"
      ],
      "dev": true,
+      "libc": [
+        "glibc"
+      ],
      "license": "MIT",
      "optional": true,
      "os": [
@@ -860,13 +863,16 @@
      }
    },
    "node_modules/@rolldown/binding-linux-arm64-musl": {
-      "version": "1.0.0",
-      "resolved": "https://registry.npmjs.org/@rolldown/binding-linux-arm64-musl/-/binding-linux-arm64-musl-1.0.0.tgz",
-      "integrity": "sha512-EIVjy2cgd7uuMMo94FVkBp7F6DhcZAUwNURkSG3RwUmvAXR6s0ISxM81U+IydcZByPG0pZIHsf1b6kTxoFDgJA==",
+      "version": "1.0.3",
+      "resolved": "https://registry.npmjs.org/@rolldown/binding-linux-arm64-musl/-/binding-linux-arm64-musl-1.0.3.tgz",
+      "integrity": "sha512-VWkUHwWriDciit80wleYwKILoR/KMvxh/IdwS/paX+ZgpuRpCrKLUdadJbc0NpBEiyhpYawsJ73j9aCvOH+f7Q==",
      "cpu": [
        "arm64"
      ],
      "dev": true,
+      "libc": [
+        "musl"
+      ],
      "license": "MIT",
      "optional": true,
      "os": [
@@ -877,13 +883,16 @@
      }
    },
    "node_modules/@rolldown/binding-linux-ppc64-gnu": {
-      "version": "1.0.0",
-      "resolved": "https://registry.npmjs.org/@rolldown/binding-linux-ppc64-gnu/-/binding-linux-ppc64-gnu-1.0.0.tgz",
-      "integrity": "sha512-JEwwOPcwTLAcpDQlqSmjEmfs63xJnSiUNIGvLcDLUHCWK4XowpS/7c7tUsUH6uT/ct6bMUTdXKfI8967FYj6mg==",
+      "version": "1.0.3",
+      "resolved": "https://registry.npmjs.org/@rolldown/binding-linux-ppc64-gnu/-/binding-linux-ppc64-gnu-1.0.3.tgz",
+      "integrity": "sha512-5f1laC0SlIR0yDbFCd8acUhvJIag6N3zC5P7oUPN6wX0aOma+uKJ0wBDH5aq7I1PVI2ttTlhJwzwRIBnLiSGEg==",
      "cpu": [
        "ppc64"
      ],
      "dev": true,
+      "libc": [
+        "glibc"
+      ],
      "license": "MIT",
      "optional": true,
      "os": [
@@ -894,13 +903,16 @@
      }
    },
    "node_modules/@rolldown/binding-linux-s390x-gnu": {
-      "version": "1.0.0",
-      "resolved": "https://registry.npmjs.org/@rolldown/binding-linux-s390x-gnu/-/binding-linux-s390x-gnu-1.0.0.tgz",
-      "integrity": "sha512-0wjCFhLrihtAubnT9iA0N++0pSV0z5Hg7tNGdNJ4RFaINceHadoF+kiFGyY1qSSNVIAZtLotG8Ju1bgDPkjnFA==",
+      "version": "1.0.3",
+      "resolved": "https://registry.npmjs.org/@rolldown/binding-linux-s390x-gnu/-/binding-linux-s390x-gnu-1.0.3.tgz",
+      "integrity": "sha512-Iq4ko0r4XsgbrF/LunNgHtAGLRRVE2kXonAXQ/MV0mC6jQpMOhW1SvtZja2EhC/kd05++bP78dsqBeIQyYJ6Yg==",
      "cpu": [
        "s390x"
      ],
      "dev": true,
+      "libc": [
+        "glibc"
+      ],
      "license": "MIT",
      "optional": true,
      "os": [
@@ -911,13 +923,16 @@
      }
    },
    "node_modules/@rolldown/binding-linux-x64-gnu": {
-      "version": "1.0.0",
-      "resolved": "https://registry.npmjs.org/@rolldown/binding-linux-x64-gnu/-/binding-linux-x64-gnu-1.0.0.tgz",
-      "integrity": "sha512-Dfn7iak9BcMMePxcoJfpSbWqnEyrp/dRF63/8qW/eHBdOZov6x5aShLLEYGYdIeSJ6vMLK/XCVB+lGIxm41bQA==",
+      "version": "1.0.3",
+      "resolved": "https://registry.npmjs.org/@rolldown/binding-linux-x64-gnu/-/binding-linux-x64-gnu-1.0.3.tgz",
+      "integrity": "sha512-B8m6tD5+/N5FeNQFbKlLA/2yVq9ycQP1SeedyEYYKWBNR3ZQbkvIUcNnDNM03lO1l5F2roiiFJGgvoLLyZXtSg==",
      "cpu": [
        "x64"
      ],
      "dev": true,
+      "libc": [
+        "glibc"
+      ],
      "license": "MIT",
      "optional": true,
      "os": [
@@ -928,13 +943,16 @@
      }
    },
    "node_modules/@rolldown/binding-linux-x64-musl": {
-      "version": "1.0.0",
-      "resolved": "https://registry.npmjs.org/@rolldown/binding-linux-x64-musl/-/binding-linux-x64-musl-1.0.0.tgz",
-      "integrity": "sha512-5/utzzDmD/pD/bmuaUcbTf/sZYy0aztwIVlfpoW1fTjCZ0BaPOMVWGZL1zvgxyi7ZIVYWlxKONHmSbHuiOh8Jw==",
+      "version": "1.0.3",
+      "resolved": "https://registry.npmjs.org/@rolldown/binding-linux-x64-musl/-/binding-linux-x64-musl-1.0.3.tgz",
+      "integrity": "sha512-pSdpdUJHkuCxun9LE7jvgUB9qsRgaiyNNCX7m/AvHTcq67AiT/Yhoxvw5zPfhrM8k/BfP8ce/hMOpthKDpEUow==",
      "cpu": [
        "x64"
      ],
      "dev": true,
+      "libc": [
+        "musl"
+      ],
      "license": "MIT",
      "optional": true,
      "os": [
@@ -945,9 +963,9 @@
      }
    },
    "node_modules/@rolldown/binding-openharmony-arm64": {
-      "version": "1.0.0",
-      "resolved": "https://registry.npmjs.org/@rolldown/binding-openharmony-arm64/-/binding-openharmony-arm64-1.0.0.tgz",
-      "integrity": "sha512-ouJs8VcUomfLfpbUECqFMRqdV4x6aeAK3MA4m6vTrJJjKyWTV5KnxZx7Jd9G+GlDaQQxubcba00x16OyJ1meig==",
+      "version": "1.0.3",
+      "resolved": "https://registry.npmjs.org/@rolldown/binding-openharmony-arm64/-/binding-openharmony-arm64-1.0.3.tgz",
+      "integrity": "sha512-OXXS3RKJgX2uLwM+gYyuH5omcH8fL1LJs96pZGgtetVCahON57+d4SJHzTgZiOjxgGkSnpXpOsWuPDGAKAigEg==",
      "cpu": [
        "arm64"
      ],
@@ -962,9 +980,9 @@
      }
    },
    "node_modules/@rolldown/binding-wasm32-wasi": {
-      "version": "1.0.0",
-      "resolved": "https://registry.npmjs.org/@rolldown/binding-wasm32-wasi/-/binding-wasm32-wasi-1.0.0.tgz",
-      "integrity": "sha512-E+oHKGiDA+lsKMmFtffDDw91EryDT7uJocrIuCHqhm6bCTM6xFK+3gaCkYOHfPwQr0cCNarSM2xaELoQDz9jJg==",
+      "version": "1.0.3",
+      "resolved": "https://registry.npmjs.org/@rolldown/binding-wasm32-wasi/-/binding-wasm32-wasi-1.0.3.tgz",
+      "integrity": "sha512-JTtb8BWFynicNSoPrehsCzBtOKjZ6jhMiPFEmOiuXg1Fl8dn2KHQob+GuPSGR0dryQa1PQJbzjF3dqO/whhjLg==",
      "cpu": [
        "wasm32"
      ],
@@ -981,9 +999,9 @@
      }
    },
    "node_modules/@rolldown/binding-win32-arm64-msvc": {
-      "version": "1.0.0",
-      "resolved": "https://registry.npmjs.org/@rolldown/binding-win32-arm64-msvc/-/binding-win32-arm64-msvc-1.0.0.tgz",
-      "integrity": "sha512-yYK02n8Rngo+gbm1y6G0+7jk1sJ/2Wt7K0me0Y7k/ErBpyf+LJ2gFpqWVTcRV1rUepBlQRmpgWkTQCiiwrK0Ow==",
+      "version": "1.0.3",
+      "resolved": "https://registry.npmjs.org/@rolldown/binding-win32-arm64-msvc/-/binding-win32-arm64-msvc-1.0.3.tgz",
+      "integrity": "sha512-gEdFFEN70A/jxb2svrWsN3aDL7OUtmvlOy+6fa2jxG8K0wQ1ZbdeLGnidov6Yu5/733dI5ySfzFlQ/cb0bSz1g==",
      "cpu": [
        "arm64"
      ],
@@ -998,9 +1016,9 @@
      }
    },
    "node_modules/@rolldown/binding-win32-x64-msvc": {
-      "version": "1.0.0",
-      "resolved": "https://registry.npmjs.org/@rolldown/binding-win32-x64-msvc/-/binding-win32-x64-msvc-1.0.0.tgz",
-      "integrity": "sha512-14bpChMahXRRXiTwahSl+zzHPW6qQTXtkMuJBFlbo+pqSAews2d4BdCSHfrJ/MBsCZtpmTafsY+1QhBzitcmdg==",
+      "version": "1.0.3",
+      "resolved": "https://registry.npmjs.org/@rolldown/binding-win32-x64-msvc/-/binding-win32-x64-msvc-1.0.3.tgz",
+      "integrity": "sha512-eXB7CHuaQdqmJcc3koCNtNPmT/bj2gc999kUFgBxG8Ac0NdgXc4rkCHhqrgrhN3zddvvvrgzj1e90SuSfmyIXA==",
      "cpu": [
        "x64"
      ],
@@ -3158,9 +3176,9 @@
      "license": "MIT"
    },
    "node_modules/nanoid": {
-      "version": "3.3.11",
-      "resolved": "https://registry.npmjs.org/nanoid/-/nanoid-3.3.11.tgz",
-      "integrity": "sha512-N8SpfPUnUp1bK+PMYW8qSWdl9U+wwNWI4QKxOYDy9JAro3WMX7p2OeVRF9v+347pnakNevPmiHhNmZ2HbFA76w==",
+      "version": "3.3.12",
+      "resolved": "https://registry.npmjs.org/nanoid/-/nanoid-3.3.12.tgz",
+      "integrity": "sha512-ZB9RH/39qpq5Vu6Y+NmUaFhQR6pp+M2Xt76XBnEwDaGcVAqhlvxrl3B2bKS5D3NH3QR76v3aSrKaF/Kiy7lEtQ==",
      "funding": [
        {
          "type": "github",
@@ -3334,9 +3352,9 @@
      }
    },
    "node_modules/postcss": {
-      "version": "8.5.14",
-      "resolved": "https://registry.npmjs.org/postcss/-/postcss-8.5.14.tgz",
-      "integrity": "sha512-SoSL4+OSEtR99LHFZQiJLkT59C5B1amGO1NzTwj7TT1qCUgUO6hxOvzkOYxD+vMrXBM3XJIKzokoERdqQq/Zmg==",
+      "version": "8.5.15",
+      "resolved": "https://registry.npmjs.org/postcss/-/postcss-8.5.15.tgz",
+      "integrity": "sha512-FfR8sjd4em2T6fb3I2MwAJU7HWVMr9zba+enmQeeWFfCbm+UOC/0X4DS8XtpUTMwWMGbjKYP7xjfNekzyGmB3A==",
      "funding": [
        {
          "type": "opencollective",
@@ -3353,7 +3371,7 @@
      ],
      "license": "MIT",
      "dependencies": {
-        "nanoid": "^3.3.11",
+        "nanoid": "^3.3.12",
        "picocolors": "^1.1.1",
        "source-map-js": "^1.2.1"
      },
@@ -3610,14 +3628,14 @@
      }
    },
    "node_modules/rolldown": {
-      "version": "1.0.0",
-      "resolved": "https://registry.npmjs.org/rolldown/-/rolldown-1.0.0.tgz",
-      "integrity": "sha512-yD986aXDESFGS95spT1LAv0jssywP4npMEjmMHyN2/5+eE8qQJUype2AaKkRiLgBgyD0LFlubwAht7VmY8rGoA==",
+      "version": "1.0.3",
+      "resolved": "https://registry.npmjs.org/rolldown/-/rolldown-1.0.3.tgz",
+      "integrity": "sha512-i00lAJ2ks1BYr7rjNjKC7BcqAS7nVfiT3QX1SI5aY+AFHblCmaUf9OE9dbdzDvW6dJxbi2ZCZiy9v3CcwOiX3g==",
      "dev": true,
      "license": "MIT",
      "dependencies": {
-        "@oxc-project/types": "=0.129.0",
-        "@rolldown/pluginutils": "1.0.0"
+        "@oxc-project/types": "=0.133.0",
+        "@rolldown/pluginutils": "^1.0.0"
      },
      "bin": {
        "rolldown": "bin/cli.mjs"
@@ -3626,27 +3644,27 @@
        "node": "^20.19.0 || >=22.12.0"
      },
      "optionalDependencies": {
-        "@rolldown/binding-android-arm64": "1.0.0",
-        "@rolldown/binding-darwin-arm64": "1.0.0",
-        "@rolldown/binding-darwin-x64": "1.0.0",
-        "@rolldown/binding-freebsd-x64": "1.0.0",
-        "@rolldown/binding-linux-arm-gnueabihf": "1.0.0",
-        "@rolldown/binding-linux-arm64-gnu": "1.0.0",
-        "@rolldown/binding-linux-arm64-musl": "1.0.0",
-        "@rolldown/binding-linux-ppc64-gnu": "1.0.0",
-        "@rolldown/binding-linux-s390x-gnu": "1.0.0",
-        "@rolldown/binding-linux-x64-gnu": "1.0.0",
-        "@rolldown/binding-linux-x64-musl": "1.0.0",
-        "@rolldown/binding-openharmony-arm64": "1.0.0",
-        "@rolldown/binding-wasm32-wasi": "1.0.0",
-        "@rolldown/binding-win32-arm64-msvc": "1.0.0",
-        "@rolldown/binding-win32-x64-msvc": "1.0.0"
+        "@rolldown/binding-android-arm64": "1.0.3",
+        "@rolldown/binding-darwin-arm64": "1.0.3",
+        "@rolldown/binding-darwin-x64": "1.0.3",
+        "@rolldown/binding-freebsd-x64": "1.0.3",
+        "@rolldown/binding-linux-arm-gnueabihf": "1.0.3",
+        "@rolldown/binding-linux-arm64-gnu": "1.0.3",
+        "@rolldown/binding-linux-arm64-musl": "1.0.3",
+        "@rolldown/binding-linux-ppc64-gnu": "1.0.3",
+        "@rolldown/binding-linux-s390x-gnu": "1.0.3",
+        "@rolldown/binding-linux-x64-gnu": "1.0.3",
+        "@rolldown/binding-linux-x64-musl": "1.0.3",
+        "@rolldown/binding-openharmony-arm64": "1.0.3",
+        "@rolldown/binding-wasm32-wasi": "1.0.3",
+        "@rolldown/binding-win32-arm64-msvc": "1.0.3",
+        "@rolldown/binding-win32-x64-msvc": "1.0.3"
      }
    },
    "node_modules/rolldown/node_modules/@rolldown/pluginutils": {
-      "version": "1.0.0",
-      "resolved": "https://registry.npmjs.org/@rolldown/pluginutils/-/pluginutils-1.0.0.tgz",
-      "integrity": "sha512-aKs/3GSWyV0mrhNmt/96/Z3yczC3yvrzYATCiCXQebBsGyYzjNdUphRVLeJQ67ySKVXRfMxt2lm12pmXvbPFQQ==",
+      "version": "1.0.1",
+      "resolved": "https://registry.npmjs.org/@rolldown/pluginutils/-/pluginutils-1.0.1.tgz",
+      "integrity": "sha512-2j9bGt5Jh8hj+vPtgzPtl72j0yRxHAyumoo6TNfAjsLB04UtpSvPbPcDcBMxz7n+9CYB0c1GxQFxYRg2jimqGw==",
      "dev": true,
      "license": "MIT"
    },
@@ -4325,9 +4343,9 @@
      }
    },
    "node_modules/tinyglobby": {
-      "version": "0.2.16",
-      "resolved": "https://registry.npmjs.org/tinyglobby/-/tinyglobby-0.2.16.tgz",
-      "integrity": "sha512-pn99VhoACYR8nFHhxqix+uvsbXineAasWm5ojXoN8xEwK5Kd3/TrhNn1wByuD52UxWRLy8pu+kRMniEi6Eq9Zg==",
+      "version": "0.2.17",
+      "resolved": "https://registry.npmjs.org/tinyglobby/-/tinyglobby-0.2.17.tgz",
+      "integrity": "sha512-wXR/dYpcqKmfWpEdZjiKJOwCNFndD0DMnrW/cYjVGttEkBfVgcLFHoNrlj47mjOVic9yyNu65alsgF4NQyTa2g==",
      "dev": true,
      "license": "MIT",
      "dependencies": {
@@ -4465,17 +4483,17 @@
      "license": "MIT"
    },
    "node_modules/vite": {
-      "version": "8.0.12",
-      "resolved": "https://registry.npmjs.org/vite/-/vite-8.0.12.tgz",
-      "integrity": "sha512-w2dDofOWv2QB09ZITZBsvKTVAlYvPR4IAmrY/v0ir9KvLs0xybR7i48wxhM1/oyBWO34wPns+bPGw5ZrZqDpZg==",
+      "version": "8.0.16",
+      "resolved": "https://registry.npmjs.org/vite/-/vite-8.0.16.tgz",
+      "integrity": "sha512-h9bXPmJichP5fLmVQo3PyaGSDE2n3aPuomeAlVRm0JLmt4rY6zmPKd59HYI4LNW8oTK7tlTsuC7l/m7awx9Jcw==",
      "dev": true,
      "license": "MIT",
      "dependencies": {
        "lightningcss": "^1.32.0",
        "picomatch": "^4.0.4",
-        "postcss": "^8.5.14",
-        "rolldown": "1.0.0",
-        "tinyglobby": "^0.2.16"
+        "postcss": "^8.5.15",
+        "rolldown": "1.0.3",
+        "tinyglobby": "^0.2.17"
      },
      "bin": {
        "vite": "bin/vite.js"
@@ -29,12 +29,12 @@ classifiers = [
 dependencies = [
  "arabic-reshaper==3.0.1",  # Support for Arabic in reportlab
  "babel",
-  "BeautifulSoup4==4.14.*",
-  "bleach==6.3.*",
+  "BeautifulSoup4==4.15.*",
+  "bleach==6.4.*",
  "celery==5.6.*",
  "chardet==5.2.*",
-  "cryptography>=48.0.0",
-  "css-inline==0.20.*",
+  "cryptography>=49.0.0",
+  "css-inline==0.21.*",
  "defusedcsv>=3.0.0",
  "dnspython==2.*",
  "Django[argon2]==5.2.*",
@@ -44,7 +44,7 @@ dependencies = [
  "django-filter==25.1",
  "django-formset-js-improved==0.5.0.5",
  "django-formtools==2.6.1",
-  "django-hierarkey==2.0.*,>=2.0.1",
+  "django-hierarkey==2.0.*,>=2.0.2",
  "django-hijack==3.7.*",
  "django-i18nfield==1.11.*",
  "django-libsass==0.9",
@@ -74,11 +74,11 @@ dependencies = [
  "packaging",
  "paypalrestsdk==1.13.*",
  "paypal-checkout-serversdk==1.0.*",
-  "PyJWT==2.12.*",
+  "PyJWT==2.13.*",
  "phonenumberslite==9.0.*",
  "Pillow==12.2.*",
  "pretix-plugin-build",
-  "protobuf==7.34.*",
+  "protobuf==7.35.*",
  "psycopg2-binary",
  "pycountry",
  "pycparser==3.0",
@@ -93,7 +93,7 @@ dependencies = [
  "redis==7.4.*",
  "reportlab==4.5.*",
  "requests==2.32.*",
-  "sentry-sdk==2.60.*",
+  "sentry-sdk==2.63.*",
  "sepaxml==2.7.*",
  "stripe==7.9.*",
  "text-unidecode==1.*",
@@ -101,23 +101,23 @@ dependencies = [
  "tqdm==4.*",
  "ua-parser==1.0.*",
  "vobject==0.9.*",
-  "webauthn==2.7.*",
+  "webauthn==2.8.*",
  "zeep==4.3.*"
 ]

 [project.optional-dependencies]
 memcached = ["pylibmc"]
 dev = [
-  "aiohttp==3.13.*",
+  "aiohttp==3.14.*",
  "coverage",
  "coveralls",
-  "fakeredis==2.35.*",
+  "fakeredis==2.36.*",
  "flake8==7.3.*",
  "freezegun",
  "isort==8.0.*",
  "pep8-naming==0.15.*",
  "potypo",
-  "pytest-asyncio>=1.3.0",
+  "pytest-asyncio>=1.4.0",
  "pytest-cache",
  "pytest-cov",
  "pytest-django==4.*",
@@ -125,7 +125,7 @@ dev = [
  "pytest-sugar",
  "pytest-xdist==3.8.*",
  "pytest-playwright",
-  "pytest==9.0.*",
+  "pytest==9.1.*",
  "playwright",
  "responses",
 ]
@@ -139,8 +139,6 @@ build-backend = "backend"
 backend-path = ["_build"]
 requires = [
  "setuptools",
-  "setuptools-rust",
-  "wheel",
  "importlib_metadata",
  "tomli",
 ]
@@ -7,7 +7,7 @@ localecompile:

 localegen:
 	./manage.py makemessages --keep-pot --ignore "pretix/static/npm_dir/*" $(LNGS)
-	./manage.py makemessages --keep-pot -d djangojs --ignore "pretix/static/npm_dir/*" --ignore "pretix/helpers/*" --ignore "pretix/static/jsi18n/*" --ignore "pretix/static/jsi18n/*" --ignore "pretix/static.dist/*" --ignore "data/*" --ignore "pretix/static/rrule/*" --ignore "build/*" $(LNGS)
+	./manage.py makemessages --keep-pot -e js,ts,vue -d djangojs --ignore "pretix/static/npm_dir/*" --ignore "pretix/helpers/*" --ignore "pretix/static/jsi18n/*" --ignore "pretix/static/jsi18n/*" --ignore "pretix/static.dist/*" --ignore "data/*" --ignore "pretix/static/rrule/*" --ignore "build/*" $(LNGS)

 staticfiles: npminstall npmbuild jsi18n
 	./manage.py collectstatic --noinput
@@ -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__ = "2026.5.0.dev0"
+__version__ = "2026.6.2"
@@ -110,6 +110,8 @@ class PretixScanSecurityProfile(AllowListSecurityProfile):
        ('POST', 'api-v1:checkinrpc.redeem'),
        ('GET', 'api-v1:checkinrpc.search'),
        ('GET', 'api-v1:reusablemedium-list'),
+        ('POST', 'api-v1:reusablemedium-lookup'),
+        ('PATCH', 'api-v1:reusablemedium-detail')
    )


@@ -0,0 +1,9 @@
+def get_session_key_for_api_auth(user, auth):
+    if user.is_authenticated:
+        return f'api-upload-User-{user.pk}'
+    else:
+        return f'api-upload-{str(type(auth))}-{auth.pk}'
+
+
+def get_session_key_for_api_request(request):
+    return get_session_key_for_api_auth(request.user, request.auth)
@@ -101,6 +101,10 @@ class OAuthAccessToken(AbstractAccessToken):
        self.expires = now() - timedelta(hours=1)
        self.save(update_fields=['expires'])

+    def is_valid(self, scopes=None):
+        # Can maybe be removed after upgrading django-oauth-toolkit to 3.4.1
+        return super().is_valid(scopes) and self.application.is_usable(None)
+

 class OAuthRefreshToken(AbstractRefreshToken):
    application = models.ForeignKey(
@@ -88,11 +88,19 @@ class CheckinRPCRedeemInputSerializer(serializers.Serializer):
    nonce = serializers.CharField(required=False, allow_null=True)
    datetime = serializers.DateTimeField(required=False, allow_null=True)
    answers = serializers.JSONField(required=False, allow_null=True)
+    exchange_medium_type = serializers.ChoiceField(required=False, choices=MEDIA_TYPES)
+    exchange_medium_identifier = serializers.CharField(required=False)

    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')

+    def validate(self, attrs):
+        exchange_fields = ["exchange_medium_type", "exchange_medium_identifier"]
+        if any(attrs.get(k) is None for k in exchange_fields) and not all(attrs.get(k) is None for k in exchange_fields):
+            raise ValidationError("If you set any of exchange_medium_type or exchange_medium_identifier, you need to set both of them.")
+        return attrs
+

 class MiniCheckinListSerializer(I18nAwareModelSerializer):
    event = serializers.SlugRelatedField(slug_field='slug', read_only=True)
@@ -73,7 +73,7 @@ from pretix.base.settings import (
    LazyI18nStringList, validate_event_settings,
 )
 from pretix.base.signals import api_event_settings_fields
-from pretix.multidomain.urlreverse import build_absolute_uri
+from pretix.multidomain.urlreverse import eventreverse_absolute

 logger = logging.getLogger(__name__)

@@ -173,7 +173,7 @@ class EventSerializer(SalesChannelMigrationMixin, I18nAwareModelSerializer):
    )

    def get_event_url(self, event):
-        return build_absolute_uri(event, 'presale:event.index')
+        return eventreverse_absolute(event, 'presale:event.index')

    class Meta:
        model = Event
@@ -871,6 +871,7 @@ class EventSettingsSerializer(SettingsSerializer):
        'og_image',
        'name_scheme',
        'reusable_media_active',
+        'reusable_media_usage_enforced',
        'reusable_media_type_barcode',
        'reusable_media_type_barcode_identifier_length',
        'reusable_media_type_nfc_uid',
@@ -885,6 +886,7 @@ class EventSettingsSerializer(SettingsSerializer):
    readonly_fields = [
        # These are read-only since they are currently only settable on organizers, not events
        'reusable_media_active',
+        'reusable_media_usage_enforced',
        'reusable_media_type_barcode',
        'reusable_media_type_barcode_identifier_length',
        'reusable_media_type_nfc_uid',
@@ -970,6 +972,7 @@ class DeviceEventSettingsSerializer(EventSettingsSerializer):
        'reusable_media_type_nfc_uid',
        'reusable_media_type_nfc_mf0aes',
        'reusable_media_type_nfc_mf0aes_random_uid',
+        'reusable_media_usage_enforced',
        'system_question_order',
        'tax_rule_payment',
        'tax_rule_cancellation',
@@ -37,6 +37,8 @@ from collections import OrderedDict
 from django.core.exceptions import ValidationError
 from rest_framework import serializers

+from pretix.api.auth.utils import get_session_key_for_api_request
+

 def remove_duplicates_from_list(data):
    return list(OrderedDict.fromkeys(data))
@@ -83,10 +85,16 @@ class UploadedFileField(serializers.Field):
        request = self.context.get('request', None)
        try:
            cf = CachedFile.objects.get(
-                session_key=f'api-upload-{str(type(request.user or request.auth))}-{(request.user or request.auth).pk}',
                file__isnull=False,
                pk=data[len("file:"):],
            )
+            if cf.session_key == "api-upload-<class 'django.contrib.auth.models.AnonymousUser'>-None":
+                # OK, backwards-compatibility of a security bug fixed 2026-09, delete this at some point, but should
+                # also be harmless because all files with this key are expired one day after deployment of this fix
+                # and no new files with this key are created
+                pass
+            elif cf.session_key != get_session_key_for_api_request(request):
+                self.fail('not_found')
        except (ValidationError, IndexError):  # invalid uuid
            self.fail('not_found')
        except CachedFile.DoesNotExist:
@@ -66,13 +66,14 @@ class ReusableMediaSerializer(I18nAwareModelSerializer):

    def __init__(self, *args, **kwargs):
        super().__init__(*args, **kwargs)
+        expand_nested = self.context['request'].query_params.getlist('expand')

-        if 'linked_giftcard' in self.context['request'].query_params.getlist('expand'):
+        if 'linked_giftcard' in expand_nested:
            if not self.context["can_read_giftcards"]:
                raise PermissionDenied("No permission to access gift card details.")

            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(
@@ -81,17 +82,27 @@ class ReusableMediaSerializer(I18nAwareModelSerializer):
                queryset=self.context['organizer'].issued_gift_cards.all()
            )

-        if 'linked_orderposition' in self.context['request'].query_params.getlist('expand'):
-            # Permission Check performed in to_representation
-            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:
            if not self.context["can_read_customers"]:
                raise PermissionDenied("No permission to access customer details.")

@@ -106,6 +117,21 @@ class ReusableMediaSerializer(I18nAwareModelSerializer):

    def validate(self, data):
        data = super().validate(data)
+        if 'linked_orderposition' in data:
+            linked_orderposition = data['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 and 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 linked_orderposition else []
+            del data['linked_orderposition']
+
        if 'type' in data and 'identifier' in data:
            qs = self.context['organizer'].reusable_media.filter(
                identifier=data['identifier'], type=data['type']
@@ -121,14 +147,28 @@ class ReusableMediaSerializer(I18nAwareModelSerializer):
    def to_representation(self, instance):
        r = super().to_representation(instance)
        request = self.context.get('request')
+
+        ops = r.get('linked_orderpositions', [])
        # late permission evaluations for checks that depend on the actual linked events
        expand_nested = self.context['request'].query_params.getlist('expand')
        perm_holder = request.auth if isinstance(request.auth, (Device, TeamAPIToken)) else request.user
-        if 'linked_orderposition' in expand_nested:
-            if instance.linked_orderposition is not None:
-                event = instance.linked_orderposition.order.event
+        if ops and 'linked_orderposition' in expand_nested or 'linked_orderpositions' in expand_nested:
+            ops_noperm = []
+            for lop in instance.linked_orderpositions.all():
+                event = lop.order.event
                if not perm_holder.has_event_permission(event.organizer, event, 'event.orders:read', request):
-                    r['linked_orderposition'] = {'id': instance.linked_orderposition.id}
+                    ops_noperm.append(lop.id)
+            if ops_noperm:
+                ops = [
+                    {'id': op['id']} if op['id'] in ops_noperm
+                    else op
+                    for op in ops
+                ]
+                r['linked_orderpositions'] = ops
+
+        # add linked_orderposition (singular) for backwards compatibility
+        if len(ops) < 2:
+            r['linked_orderposition'] = ops[0] if ops else None

        if 'linked_giftcard.owner_ticket' in expand_nested:
            gc = instance.linked_giftcard
@@ -148,10 +188,12 @@ class ReusableMediaSerializer(I18nAwareModelSerializer):
            'updated',
            'type',
            'identifier',
+            'claim_token',
+            'label',
            'active',
            'expires',
            'customer',
-            'linked_orderposition',
+            'linked_orderpositions',
            'linked_giftcard',
            'info',
            'notes',
@@ -41,6 +41,7 @@ from rest_framework.exceptions import ValidationError
 from rest_framework.relations import SlugRelatedField
 from rest_framework.reverse import reverse

+from pretix.api.auth.utils import get_session_key_for_api_request
 from pretix.api.serializers import CompatibleJSONField
 from pretix.api.serializers.event import SubEventSerializer
 from pretix.api.serializers.forms import form_field_to_serializer_field
@@ -76,7 +77,7 @@ from pretix.base.settings import (
 )
 from pretix.base.signals import register_ticket_outputs
 from pretix.helpers.countries import CachedCountries
-from pretix.multidomain.urlreverse import build_absolute_uri
+from pretix.multidomain.urlreverse import eventreverse_absolute

 logger = logging.getLogger(__name__)

@@ -257,16 +258,21 @@ class AnswerSerializer(I18nAwareModelSerializer):
        if data['answer'] == 'file:keep':
            return data
        try:
-            ao = self.context["request"].user or self.context["request"].auth
            cf = CachedFile.objects.get(
-                session_key=f'api-upload-{str(type(ao))}-{ao.pk}',
                file__isnull=False,
                pk=data['answer'][len("file:"):],
            )
+            if cf.session_key == "api-upload-<class 'django.contrib.auth.models.AnonymousUser'>-None":
+                # OK, backwards-compatibility of a security bug fixed 2026-09, delete this at some point, but should
+                # also be harmless because all files with this key are expired one day after deployment of this fix
+                # and no new files with this key are created
+                pass
+            elif cf.session_key != get_session_key_for_api_request(self.context["request"]):
+                raise ValidationError('The submitted file ID "{fid}" was not found.'.format(fid=data['answer']))
        except (ValidationError, IndexError):  # invalid uuid
-            raise ValidationError('The submitted file ID "{fid}" was not found.'.format(fid=data))
+            raise ValidationError('The submitted file ID "{fid}" was not found.'.format(fid=data['answer']))
        except CachedFile.DoesNotExist:
-            raise ValidationError('The submitted file ID "{fid}" was not found.'.format(fid=data))
+            raise ValidationError('The submitted file ID "{fid}" was not found.'.format(fid=data['answer']))

        allowed_types = (
            'image/png', 'image/jpeg', 'image/gif', 'application/pdf'
@@ -757,7 +763,7 @@ class PaymentURLField(serializers.URLField):
    def to_representation(self, instance: OrderPayment):
        if instance.state != OrderPayment.PAYMENT_STATE_CREATED:
            return None
-        return build_absolute_uri(instance.order.event, 'presale:event.order.pay', kwargs={
+        return eventreverse_absolute(instance.order.event, 'presale:event.order.pay', kwargs={
            'order': instance.order.code,
            'secret': instance.order.secret,
            'payment': instance.pk,
@@ -806,7 +812,7 @@ class OrderRefundSerializer(I18nAwareModelSerializer):

 class OrderURLField(serializers.URLField):
    def to_representation(self, instance: Order):
-        return build_absolute_uri(instance.event, 'presale:event.order', kwargs={
+        return eventreverse_absolute(instance.event, 'presale:event.order', kwargs={
            'order': instance.code,
            'secret': instance.secret,
        })
@@ -1149,6 +1155,7 @@ class OrderPositionCreateSerializer(I18nAwareModelSerializer):
            raise ValidationError(
                {'discount': ['You can only specify a discount if you do the price computation, but price is not set.']}
            )
+
        return data


@@ -1588,7 +1595,7 @@ class OrderCreateSerializer(I18nAwareModelSerializer):
                pos_data['attendee_name_parts'] = {
                    '_legacy': attendee_name
                }
-            pos = OrderPosition(**{k: v for k, v in pos_data.items() if k != 'answers' and k != '_quotas' and k != 'use_reusable_medium'})
+            pos = OrderPosition(**{k: v for k, v in pos_data.items() if k not in ('answers', '_quotas', 'use_reusable_medium')})
            if simulate:
                pos.order = order._wrapped
            else:
@@ -1703,15 +1710,25 @@ 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'])
+                    if pos.item.media_policy not in (Item.MEDIA_POLICY_APPEND, Item.MEDIA_POLICY_APPEND_OR_NEW):
+                        for op_pk in use_reusable_medium.linked_orderpositions.values_list('pk', flat=True):
+                            use_reusable_medium.log_action(
+                                'pretix.reusable_medium.linked_orderposition.removed',
+                                data={
+                                    'linked_orderposition': op_pk,
+                                }
+                            )
+                        use_reusable_medium.linked_orderpositions.set([pos])
+                    else:
+                        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,
                        }
                    )
+                    use_reusable_medium.touch()

        if not simulate:
            for cp in delete_cps:
@@ -58,8 +58,8 @@ from pretix.helpers.permission_migration import (
    OLD_TO_NEW_EVENT_COMPAT, OLD_TO_NEW_EVENT_MIGRATION,
    OLD_TO_NEW_ORGANIZER_COMPAT, OLD_TO_NEW_ORGANIZER_MIGRATION,
 )
-from pretix.helpers.urls import build_absolute_uri as build_global_uri
-from pretix.multidomain.urlreverse import build_absolute_uri
+from pretix.helpers.urls import mainreverse_absolute
+from pretix.multidomain.urlreverse import eventreverse_absolute

 logger = logging.getLogger(__name__)

@@ -71,7 +71,7 @@ class OrganizerSerializer(I18nAwareModelSerializer):
    slug = serializers.CharField(read_only=True)

    def get_organizer_url(self, organizer):
-        return build_absolute_uri(organizer, 'presale:organizer.index')
+        return eventreverse_absolute(organizer, 'presale:organizer.index')

    class Meta:
        model = Organizer
@@ -499,7 +499,7 @@ class TeamInviteSerializer(serializers.ModelSerializer):
                'user': self,
                'organizer': self.context['organizer'].name,
                'team': instance.team.name,
-                'url': build_global_uri('control:auth.invite', kwargs={
+                'url': mainreverse_absolute('control:auth.invite', kwargs={
                    'token': instance.token
                })
            },
@@ -605,6 +605,7 @@ class OrganizerSettingsSerializer(SettingsSerializer):
        'cookie_consent_dialog_button_yes',
        'cookie_consent_dialog_button_no',
        'reusable_media_active',
+        'reusable_media_usage_enforced',
        'reusable_media_type_barcode',
        'reusable_media_type_barcode_identifier_length',
        'reusable_media_type_nfc_uid',
@@ -50,6 +50,7 @@ from rest_framework.generics import ListAPIView
 from rest_framework.permissions import SAFE_METHODS
 from rest_framework.response import Response

+from pretix.api.auth.utils import get_session_key_for_api_auth
 from pretix.api.serializers.checkin import (
    CheckinListSerializer, CheckinRPCAnnulInputSerializer,
    CheckinRPCRedeemInputSerializer, MiniCheckinListSerializer,
@@ -69,8 +70,10 @@ from pretix.base.models import (
 from pretix.base.models.orders import PrintLog
 from pretix.base.permissions import AnyPermissionOf
 from pretix.base.services.checkin import (
-    CheckInError, RequiredQuestionsError, SQLLogic, perform_checkin,
+    CheckInError, RequiredMediaExchangeError, RequiredQuestionsError, SQLLogic,
+    perform_checkin,
 )
+from pretix.base.services.media import perform_media_exchange
 from pretix.base.signals import checkin_annulled
 from pretix.helpers import OF_SELF

@@ -327,10 +330,16 @@ with scopes_disabled():
 def _handle_file_upload(data, user, auth):
    try:
        cf = CachedFile.objects.get(
-            session_key=f'api-upload-{str(type(user or auth))}-{(user or auth).pk}',
            file__isnull=False,
            pk=data[len("file:"):],
        )
+        if cf.session_key == "api-upload-<class 'django.contrib.auth.models.AnonymousUser'>-None":
+            # OK, backwards-compatibility of a security bug fixed 2026-09, delete this at some point, but should
+            # also be harmless because all files with this key are expired one day after deployment of this fix
+            # and no new files with this key are created
+            pass
+        elif cf.session_key != get_session_key_for_api_auth(user, auth):
+            raise ValidationError('The submitted file ID "{fid}" was not found.'.format(fid=data))
    except (ValidationError, BaseValidationError, IndexError):  # invalid uuid
        raise ValidationError('The submitted file ID "{fid}" was not found.'.format(fid=data))
    except CachedFile.DoesNotExist:
@@ -454,7 +463,8 @@ 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, use_order_locale=False):
+                    source_type='barcode', legacy_url_support=False, simulate=False, gate=None, use_order_locale=False,
+                    exchange_medium_type=None, exchange_medium_identifier=None):
    if not checkinlists:
        raise ValidationError('No check-in list passed.')

@@ -463,6 +473,7 @@ def _redeem_process(*, checkinlists, raw_barcode, answers_data, datetime, force,

    device = auth if isinstance(auth, Device) else None
    gate = gate or (auth.gate if isinstance(auth, Device) else None)
+    medium = None

    context = {
        'request': request,
@@ -491,6 +502,7 @@ def _redeem_process(*, checkinlists, raw_barcode, answers_data, datetime, force,
    )
    raw_barcode_for_checkin = None
    from_revoked_secret = False
+    reusable_medium_used = None
    if simulate:
        common_checkin_args['__fake_arg_to_prevent_this_from_being_saved'] = True

@@ -521,11 +533,12 @@ 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(
+            medium = ReusableMedium.objects.active().filter(
+                Exists(ReusableMedium.linked_orderpositions.through.objects.filter(reusablemedium_id=OuterRef('pk')))
+            ).get(
                organizer_id=checkinlists[0].event.organizer_id,
                type=source_type,
                identifier=raw_barcode,
-                linked_orderposition__isnull=False,
            )
            raw_barcode_for_checkin = raw_barcode
        except ReusableMedium.DoesNotExist:
@@ -628,7 +641,9 @@ 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:
+            linked_ops = medium.linked_orderpositions.all().select_related("order").prefetch_related("addons")
+            linked_event_ids = {op.order.event_id for op in linked_ops}
+            if not any(event_id in list_by_event for event_id in linked_event_ids):
                # Medium exists but connected ticket is for the wrong event
                if not simulate:
                    checkinlists[0].event.log_action('pretix.event.checkin.unknown', data={
@@ -654,28 +669,91 @@ 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 linked_ops:
+                if op.order.event_id in list_by_event:
+                    reusable_medium_used = medium
+                    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
-    #    which add-on has the right product.
+    #    key on the same list, we're probably dealing with multiple linked_orderpositions or the ``addon_match`` case
+    #    here and need to figure out which op has the right product. This basically is a valid-for-checkin-test on every op.
    if len(op_candidates) > 1:
-        op_candidates_matching_product = [
-            op for op in op_candidates
-            if (
-                (list_by_event[op.order.event_id].addon_match or op.secret == raw_barcode or legacy_url_support) and
-                (list_by_event[op.order.event_id].all_products or op.item_id in {i.pk for i in list_by_event[op.order.event_id].limit_products.all()})
-            )
-        ]

-        if len(op_candidates_matching_product) == 0:
-            # None of the found add-ons has the correct product, too bad! We could just error out here, but
+        if not reusable_medium_used:
+            # 3a. First, we clean up that we made an imprecise query above. If a scan is made for multiple check-in lists,
+            # we have queried ``addon_to__secret=raw_barcode``, even if some of the lists in question do not allow addon
+            # matching. So we accept all candidates that match one of these cases:
+            # - Exactly the ticket secret we scanned (because that's always a possible result)
+            # - Exactly the ticket pk we scanned (on legacy endpoints)
+            # - An add-on on a list that allows add-on matching
+            # This is not necessary when a reusable media was used, since in that case we already obeyed list.addon_match
+            # correctly above.
+            op_candidates_filtered = [
+                op for op in op_candidates
+                if (
+                    op.secret == raw_barcode or
+                    list_by_event[op.order.event_id].addon_match or
+                    (str(op.pk) == raw_barcode and legacy_url_support and not untrusted_input)
+                )
+            ]
+        else:
+            op_candidates_filtered = op_candidates
+
+        if len(op_candidates_filtered) > 1:
+            # 3b. If we still have multiple candidates, we filter by product based on the check-in list configuration.
+            # This is relevant for the addon_match scenario where the scanned ticket has multiple add-ons, but only
+            # one is contained in the check-in list used to scan. It makes sense to filter this first, since it is a
+            # "static" check, i.e. scanning the same QR code on the same check-in list will always do the same, no matter
+            # when I scan it, and it is "intentional" filtering in the sense that the admin configured this behaviour
+            # into the check-in list.
+            op_candidates_filtered = [
+                op for op in op_candidates_filtered
+                if list_by_event[op.order.event_id].all_products or op.item_id in {i.pk for i in list_by_event[op.order.event_id].limit_products.all()}
+            ]
+
+        if len(op_candidates_filtered) > 1:
+            # 3c. If we still have multiple candidates, we filter by validity date. This was introduced for the case where
+            # a reusable media refers to two tickets, one currently valid and one expired or in the future. Howeer,
+            # it could in theory also happen with two add-ons being on the same check-in list but without overlapping
+            # validity. It makes sense to filter this "after" the previous checks since it is not "intentional" filtering
+            # configured by the admin but "accidental" filtering that depends on the time of execution.
+            op_candidates_filtered = [
+                op for op in op_candidates_filtered
+                if (
+                    (not op.valid_from or op.valid_from <= datetime) and
+                    (not op.valid_until or op.valid_until > datetime)
+                )
+            ]
+
+        if len(op_candidates_filtered) == 0:
+            # None of the ops is valid today or has the correct product, too bad! We could just error out here, but
            # instead we just continue with *any* product and have it rejected by the check in perform_checkin.
-            # This has the advantage of a better error message.
-            op_candidates = [op_candidates[0]]
-        elif len(op_candidates_matching_product) > 1:
+            # To improve the error message, we select the op that will "work next" or - if none matches - "worked last".
+            op_candidate = None
+            for op in op_candidates:
+                if (
+                    op.valid_from and op.valid_from > datetime and
+                    (not op_candidate or op.valid_from < op_candidate.valid_from)
+                ):
+                    op_candidate = op
+
+            if not op_candidate:
+                # no candidate in the future, get closest in the past
+                for op in op_candidates:
+                    if (
+                        op.valid_until and op.valid_until < datetime and
+                        (not op_candidate or op.valid_until > op_candidate.valid_until)
+                    ):
+                        op_candidate = op
+
+            if not op_candidate:
+                op_candidate = op_candidates[0]
+
+            op_candidates = [op_candidate]
+        elif len(op_candidates_filtered) > 1:
            # It's still ambiguous, we'll error out.
            # We choose the first match (regardless of product) for the logging since it's most likely to be the
            # base product according to our order_by above.
@@ -709,7 +787,7 @@ def _redeem_process(*, checkinlists, raw_barcode, answers_data, datetime, force,
                'list': MiniCheckinListSerializer(list_by_event[op.order.event_id]).data,
            }, status=400)
        else:
-            op_candidates = op_candidates_matching_product
+            op_candidates = op_candidates_filtered

    op = op_candidates[0]
    common_checkin_args['list'] = list_by_event[op.order.event_id]
@@ -721,7 +799,10 @@ def _redeem_process(*, checkinlists, raw_barcode, answers_data, datetime, force,
            if str(q.pk) in answers_data:
                try:
                    if q.type == Question.TYPE_FILE:
-                        given_answers[q] = _handle_file_upload(answers_data[str(q.pk)], user, auth)
+                        if answers_data[str(q.pk)]:
+                            given_answers[q] = _handle_file_upload(answers_data[str(q.pk)], user, auth)
+                        else:
+                            given_answers[q] = None
                    else:
                        given_answers[q] = q.clean_answer(answers_data[str(q.pk)])
                except (ValidationError, BaseValidationError):
@@ -734,7 +815,14 @@ def _redeem_process(*, checkinlists, raw_barcode, answers_data, datetime, force,
        locale = op.order.event.settings.locale
    with language(locale):
        try:
-            perform_checkin(
+            if exchange_medium_identifier and medium:
+                # Cannot scan a medium and then request to exchange it
+                raise CheckInError(
+                    gettext('You cannot exchange a medium for a medium.'),
+                    'error'
+                )
+
+            checkin_args = dict(
                op=op,
                clist=list_by_event[op.order.event_id],
                given_answers=given_answers,
@@ -752,7 +840,25 @@ def _redeem_process(*, checkinlists, raw_barcode, answers_data, datetime, force,
                from_revoked_secret=from_revoked_secret,
                simulate=simulate,
                gate=gate,
+                reusable_medium=medium,
            )
+
+            if exchange_medium_identifier:  # other fields are filled, see CheckinRPCRedeemInputSerializer.validate
+                with transaction.atomic():
+                    # Do exchange and check-in atomically, i.e. both succeed or both fail
+                    medium = perform_media_exchange(
+                        organizer=request.organizer,
+                        media_type=exchange_medium_type,
+                        identifier=exchange_medium_identifier,
+                        link_orderposition=op,
+                        user=user,
+                        auth=auth,
+                    )
+                    source_type = medium.media_type.identifier
+                    checkin_args['reusable_medium'] = medium
+                    perform_checkin(**checkin_args)
+            else:
+                perform_checkin(**checkin_args)
        except RequiredQuestionsError as e:
            return Response({
                'status': 'incomplete',
@@ -764,6 +870,18 @@ def _redeem_process(*, checkinlists, raw_barcode, answers_data, datetime, force,
                ],
                'list': MiniCheckinListSerializer(list_by_event[op.order.event_id]).data,
            }, status=400)
+        except RequiredMediaExchangeError as e:
+            return Response({
+                'status': 'exchange',
+                'require_attention': op.require_checkin_attention,
+                'checkin_texts': op.checkin_texts,
+                'position': CheckinListOrderPositionSerializer(op, context=_make_context(context, op.order.event)).data,
+                'media_policy': e.media_policy,
+                'media_type': e.media_type,
+                'list': MiniCheckinListSerializer(list_by_event[op.order.event_id]).data,
+                'reason': e.code,
+                'reason_explanation': e.msg,
+            }, status=400)
        except CheckInError as e:
            if not simulate:
                op.order.log_action('pretix.event.checkin.denied', data={
@@ -951,6 +1069,8 @@ class CheckinRPCRedeemView(views.APIView):
            canceled_supported=True,
            request=self.request,  # this is not clean, but we need it in the serializers for URL generation
            legacy_url_support=False,
+            exchange_medium_type=s.validated_data.get('exchange_medium_type'),
+            exchange_medium_identifier=s.validated_data.get('exchange_medium_identifier'),
        )


@@ -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(
@@ -117,14 +119,38 @@ class ReusableMediaViewSet(viewsets.ModelViewSet):

    @transaction.atomic()
    def perform_update(self, serializer):
-        ReusableMedium.objects.select_for_update(of=OF_SELF).get(pk=self.get_object().pk)
+        rm = ReusableMedium.objects.select_for_update(of=OF_SELF).get(pk=self.get_object().pk)
+        prev_linked_ops_pks = list(rm.linked_orderpositions.values_list("pk", flat=True))
        inst = serializer.save(identifier=serializer.instance.identifier, type=serializer.instance.type)
-        inst.log_action(
-            'pretix.reusable_medium.changed',
-            user=self.request.user,
-            auth=self.request.auth,
-            data=self.request.data,
-        )
+        linked_ops_pks = inst.linked_orderpositions.values_list("pk", flat=True)
+        for op_pk in prev_linked_ops_pks:
+            if op_pk not in linked_ops_pks:
+                inst.log_action(
+                    'pretix.reusable_medium.linked_orderposition.removed',
+                    user=self.request.user,
+                    auth=self.request.auth,
+                    data={
+                        'linked_orderposition': op_pk,
+                    }
+                )
+        for op_pk in linked_ops_pks:
+            if op_pk not in prev_linked_ops_pks:
+                inst.log_action(
+                    'pretix.reusable_medium.linked_orderposition.added',
+                    user=self.request.user,
+                    auth=self.request.auth,
+                    data={
+                        'linked_orderposition': op_pk,
+                    }
+                )
+        data = {k: v for k, v in self.request.data.items() if k not in ('linked_orderposition', 'linked_orderpositions')}
+        if data:
+            inst.log_action(
+                'pretix.reusable_medium.changed',
+                user=self.request.user,
+                auth=self.request.auth,
+                data=data,
+            )
        return inst

    def perform_destroy(self, instance):
@@ -157,7 +183,6 @@ 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})
@@ -171,7 +196,7 @@ class ReusableMediaViewSet(viewsets.ModelViewSet):

            return Response({"result": None})

-    @scopes_disabled()  # we are sure enough that get_queryset() is correct, so we save some perforamnce
+    @scopes_disabled()  # we are sure enough that get_queryset() is correct, so we save some performance
    def list(self, request, **kwargs):
        date = serializers.DateTimeField().to_representation(now())
        queryset = self.filter_queryset(self.get_queryset())
@@ -194,7 +194,7 @@ with scopes_disabled():
                )
            ).values('id')

-            matching_media = ReusableMedium.objects.filter(identifier=u).values_list('linked_orderposition__order_id', flat=True)
+            matching_media = ReusableMedium.objects.filter(identifier=u).values_list('linked_orderpositions__order_id', flat=True)

            mainq = (
                code
@@ -1034,7 +1034,7 @@ with scopes_disabled():
        search = django_filters.CharFilter(method='search_qs')

        def search_qs(self, queryset, name, value):
-            matching_media = ReusableMedium.objects.filter(identifier=value).values_list('linked_orderposition', flat=True)
+            matching_media = ReusableMedium.objects.filter(identifier=value).values_list('linked_orderpositions', flat=True)
            return queryset.filter(
                Q(secret__istartswith=value)
                | Q(attendee_name_cached__icontains=value)
@@ -33,6 +33,7 @@ from rest_framework.views import APIView
 from pretix.api.auth.device import DeviceTokenAuthentication
 from pretix.api.auth.permission import AnyAuthenticatedClientPermission
 from pretix.api.auth.token import TeamTokenAuthentication
+from pretix.api.auth.utils import get_session_key_for_api_request
 from pretix.base.models import CachedFile
 from pretix.helpers.images import (
    IMAGE_TYPES, validate_uploaded_file_for_valid_image,
@@ -78,7 +79,7 @@ class UploadView(APIView):
            web_download=False,
            filename=file_obj.name,
            type=content_type,
-            session_key=f'api-upload-{str(type(request.user or request.auth))}-{(request.user or request.auth).pk}'
+            session_key=get_session_key_for_api_request(request)
        )
        cf.file.save(file_obj.name, file_obj)
        cf.save()
@@ -36,7 +36,7 @@ from django.core.exceptions import ValidationError
 from django.utils.translation import gettext_lazy as _
 from requests import RequestException

-from pretix.multidomain.urlreverse import build_absolute_uri
+from pretix.multidomain.urlreverse import eventreverse_absolute

 logger = logging.getLogger(__name__)

@@ -313,7 +313,7 @@ def _get_or_create_server_keypair(organizer):

 def generate_id_token(customer, client, auth_time, nonce, scope, expires: datetime, scope_claims=False, with_code=None, with_access_token=None):
    payload = {
-        'iss': build_absolute_uri(client.organizer, 'presale:organizer.index').rstrip('/'),
+        'iss': eventreverse_absolute(client.organizer, 'presale:organizer.index').rstrip('/'),
        'aud': client.client_id,
        'exp': int(expires.timestamp()),
        'iat': int(time.time()),
@@ -28,7 +28,7 @@ from django.utils.translation import gettext_lazy as _, pgettext_lazy

 from pretix.base.models import Checkin, InvoiceAddress, Order, Question
 from pretix.base.settings import PERSON_NAME_SCHEMES
-from pretix.multidomain.urlreverse import build_absolute_uri
+from pretix.multidomain.urlreverse import eventreverse_absolute


 def get_answer(op, question_identifier=None):
@@ -545,7 +545,7 @@ def get_data_fields(event, for_model=None):
                _("Order link"),
                Question.TYPE_STRING,
                None,
-                lambda order: build_absolute_uri(
+                lambda order: eventreverse_absolute(
                    event,
                    'presale:event.order', kwargs={
                        'order': order.code,
@@ -560,7 +560,7 @@ def get_data_fields(event, for_model=None):
                _("Ticket link"),
                Question.TYPE_STRING,
                None,
-                lambda op: build_absolute_uri(
+                lambda op: eventreverse_absolute(
                    event,
                    'presale:event.order.position', kwargs={
                        'order': op.order.code,
@@ -57,6 +57,8 @@ logger = logging.getLogger('pretix.base.email')

 T = TypeVar("T", bound=EmailBackend)

+_cgnat_net = ipaddress.ip_network('100.64.0.0/10')
+

 def test_custom_smtp_backend(backend: T, from_addr: str) -> None:
    try:
@@ -253,12 +255,15 @@ def create_connection(address, timeout=socket.getdefaulttimeout(),

        if not getattr(settings, "MAIL_CUSTOM_SMTP_ALLOW_PRIVATE_NETWORKS", False):
            ip_addr = ipaddress.ip_address(sa[0])
+            check_ip4 = ip_addr.ipv4_mapped if getattr(ip_addr, "ipv4_mapped", None) else ip_addr
            if ip_addr.is_multicast:
                raise socket.error(f"Request to multicast address {sa[0]} blocked")
            if ip_addr.is_loopback or ip_addr.is_link_local:
                raise socket.error(f"Request to local address {sa[0]} blocked")
            if ip_addr.is_private:
                raise socket.error(f"Request to private address {sa[0]} blocked")
+            if check_ip4 in _cgnat_net:
+                raise socket.error(f"Request to RFC 6598 address {sa[0]} blocked")

        sock = None
        try:
@@ -68,7 +68,7 @@ from ...control.forms.filter import get_all_payment_providers
 from ...helpers import GroupConcat
 from ...helpers.iter import chunked_iterable
 from ...helpers.safe_openpyxl import remove_invalid_excel_chars
-from ...multidomain.urlreverse import build_absolute_uri
+from ...multidomain.urlreverse import eventreverse_absolute
 from ..exporter import (
    ListExporter, MultiSheetListExporter, OrganizerLevelExportMixin,
 )
@@ -429,7 +429,7 @@ class OrderListExporter(MultiSheetListExporter):
            ]))

            row.append(
-                build_absolute_uri(order.event, 'presale:event.order', kwargs={
+                eventreverse_absolute(order.event, 'presale:event.order', kwargs={
                    'order': order.code,
                    'secret': order.secret,
                })
@@ -855,7 +855,7 @@ class OrderListExporter(MultiSheetListExporter):
                ]))

                row.append(
-                    build_absolute_uri(order.event, 'presale:event.order.position', kwargs={
+                    eventreverse_absolute(order.event, 'presale:event.order.position', kwargs={
                        'order': order.code,
                        'secret': op.web_secret,
                        'position': op.positionid
@@ -20,12 +20,13 @@
 # <https://www.gnu.org/licenses/>.
 #

+from django.db.models import Prefetch
 from django.dispatch import receiver
 from django.utils.formats import date_format
 from django.utils.translation import gettext_lazy as _, pgettext, pgettext_lazy

 from ..exporter import ListExporter, OrganizerLevelExportMixin
-from ..models import ReusableMedium
+from ..models import OrderPosition, ReusableMedium
 from ..signals import register_multievent_data_exporters


@@ -44,7 +45,9 @@ class ReusableMediaExporter(OrganizerLevelExportMixin, ListExporter):
        media = ReusableMedium.objects.filter(
            organizer=self.organizer,
        ).select_related(
-            'customer', 'linked_orderposition', 'linked_giftcard',
+            'customer', 'linked_giftcard',
+        ).prefetch_related(
+            Prefetch('linked_orderpositions', queryset=OrderPosition.objects.select_related("order"))
        ).order_by('created')

        headers = [
@@ -61,18 +64,23 @@ class ReusableMediaExporter(OrganizerLevelExportMixin, ListExporter):
        yield headers
        yield self.ProgressSetTotal(total=media.count())

+        can_read_giftcards = self.permission_holder.has_organizer_permission(self.organizer, 'organizer.giftcards:read')
+
        for medium in media.iterator(chunk_size=1000):
-            row = [
+            giftcard_secret = medium.linked_giftcard.secret if medium.linked_giftcard_id else ''
+            if giftcard_secret and not can_read_giftcards:
+                giftcard_secret = giftcard_secret[:3] + "…"
+
+            yield [
                medium.type,
                medium.identifier,
                _('Yes') if medium.active else _('No'),
                date_format(medium.expires, 'SHORT_DATETIME_FORMAT') if medium.expires else '',
                medium.customer.identifier if medium.customer_id else '',
-                f"{medium.linked_orderposition.order.code}-{medium.linked_orderposition.positionid}" if medium.linked_orderposition_id else '',
-                medium.linked_giftcard.secret if medium.linked_giftcard_id else '',
+                ', '.join([f"{op.order.code}-{op.positionid}" for op in medium.linked_orderpositions.all()]),
+                giftcard_secret,
                medium.notes,
            ]
-            yield row

    def get_filename(self):
        return f'{self.organizer.slug}_media'
@@ -587,12 +587,16 @@ class PortraitImageField(SizeValidationMixin, ExtValidationMixin, forms.FileFiel
            image = ImageOps.exif_transpose(image)

            if f._cropdata:
-                image = image.crop((
-                    f._cropdata.get('x', 0),
-                    f._cropdata.get('y', 0),
-                    f._cropdata.get('x', 0) + f._cropdata.get('width', image.width),
-                    f._cropdata.get('y', 0) + f._cropdata.get('height', image.height),
-                ))
+                left = int(f._cropdata.get('x', 0))
+                top = int(f._cropdata.get('y', 0))
+                right = left + int(f._cropdata.get('width', image.width))
+                bottom = top + int(f._cropdata.get('height', image.height))
+                if left >= image.width or top >= image.height or right > image.width or bottom > image.height:
+                    raise ValidationError(
+                        self.error_messages['max_dimension'],
+                        code='max_dimension',
+                    )
+                image = image.crop((left, top, right, bottom))
                with BytesIO() as output:
                    # This might use a lot of memory, but temporary files are not a good option since
                    # we don't control the cleanup
@@ -22,9 +22,7 @@
 import datetime
 import logging
 import math
-import re
 import textwrap
-import unicodedata
 from collections import defaultdict
 from decimal import Decimal
 from io import BytesIO
@@ -58,8 +56,8 @@ from pretix.base.services.currencies import SOURCE_NAMES
 from pretix.base.signals import register_invoice_renderers
 from pretix.base.templatetags.money import money_filter
 from pretix.helpers.reportlab import (
-    FontFallbackParagraph, ThumbnailingImageReader, register_ttf_font_if_new,
-    reshaper,
+    FontFallbackParagraph, PlainTextParagraph, ThumbnailingImageReader,
+    normalize_text, register_ttf_font_if_new, reshaper,
 )
 from pretix.presale.style import get_fonts

@@ -259,18 +257,8 @@ class BaseReportlabInvoiceRenderer(BaseInvoiceRenderer):
                register_ttf_font_if_new(family + ' B I', finders.find(styles['bolditalic']['truetype']))

    def _normalize(self, text):
-        # reportlab does not support unicode combination characters
-        # It's important we do this before we use ArabicReshaper
-        text = unicodedata.normalize("NFKC", text)
-
-        # reportlab does not support RTL, ligature-heavy scripts like Arabic. Therefore, we use ArabicReshaper
-        # to resolve all ligatures and python-bidi to switch RTL texts.
-        try:
-            text = "<br />".join(get_display(reshaper.reshape(l)) for l in re.split("<br ?/>", text))
-        except:
-            logger.exception('Reshaping/Bidi fixes failed on string {}'.format(repr(text)))
-
-        return text
+        # alias kept for plugin compatibility
+        return normalize_text(text)

    def _upper(self, val):
        # We uppercase labels, but not in every language
@@ -351,10 +339,15 @@ class BaseReportlabInvoiceRenderer(BaseInvoiceRenderer):
        return 'invoice.pdf', 'application/pdf', buffer.read()

    def _clean_text(self, text, tags=None):
-        return self._normalize(bleach.clean(
-            text,
-            tags=set(tags) if tags else set()
-        ).strip().replace('<br>', '<br />').replace('\n', '<br />\n'))
+        # For backwards compatibility with customer content, we need to support tags like <br> and <b> in a few text
+        # fields. Therefore, we can't use PlainTextParagraph for these, but run bleach instead to limit the allowed
+        # tags.
+        return self._normalize(
+            bleach.clean(
+                text,
+                tags=set(tags) if tags else set()
+            ).strip().replace('<br>', '<br />').replace('\n', '<br />\n')
+        )


 class PaidMarker(Flowable):
@@ -405,8 +398,7 @@ class ClassicInvoiceRenderer(BaseReportlabInvoiceRenderer):
    invoice_to_top = 52 * mm

    def _draw_invoice_to(self, canvas):
-        p = FontFallbackParagraph(self._clean_text(self.invoice.address_invoice_to),
-                                  style=self.stylesheet['Normal'])
+        p = PlainTextParagraph(self.invoice.address_invoice_to, style=self.stylesheet['Normal'])
        p.wrapOn(canvas, self.invoice_to_width, self.invoice_to_height)
        p_size = p.wrap(self.invoice_to_width, self.invoice_to_height)
        p.drawOn(canvas, self.invoice_to_left, self.pagesize[1] - p_size[1] - self.invoice_to_top)
@@ -417,8 +409,8 @@ class ClassicInvoiceRenderer(BaseReportlabInvoiceRenderer):
    invoice_from_top = 17 * mm

    def _draw_invoice_from(self, canvas):
-        p = FontFallbackParagraph(
-            self._clean_text(self.invoice.full_invoice_from),
+        p = PlainTextParagraph(
+            self.invoice.full_invoice_from,
            style=self.stylesheet['InvoiceFrom']
        )
        p.wrapOn(canvas, self.invoice_from_width, self.invoice_from_height)
@@ -548,13 +540,12 @@ class ClassicInvoiceRenderer(BaseReportlabInvoiceRenderer):
    def _draw_event(self, canvas):
        def shorten(txt):
            txt = str(txt)
-            txt = bleach.clean(txt, tags=set()).strip()
-            p = FontFallbackParagraph(self._normalize(txt.strip().replace('\n', '<br />\n')), style=self.stylesheet['Normal'])
+            p = PlainTextParagraph(txt, style=self.stylesheet['Normal'])
            p_size = p.wrap(self.event_width, self.event_height)

            while p_size[1] > 2 * self.stylesheet['Normal'].leading:
                txt = ' '.join(txt.replace('…', '').split()[:-1]) + '…'
-                p = FontFallbackParagraph(self._normalize(txt.strip().replace('\n', '<br />\n')), style=self.stylesheet['Normal'])
+                p = PlainTextParagraph(txt, style=self.stylesheet['Normal'])
                p_size = p.wrap(self.event_width, self.event_height)
            return txt

@@ -572,7 +563,7 @@ class ClassicInvoiceRenderer(BaseReportlabInvoiceRenderer):
        else:
            p_str = shorten(self.invoice.event.name)

-        p = FontFallbackParagraph(self._normalize(p_str.strip().replace('\n', '<br />\n')), style=self.stylesheet['Normal'])
+        p = PlainTextParagraph(p_str, style=self.stylesheet['Normal'])
        p.wrapOn(canvas, self.event_width, self.event_height)
        p_size = p.wrap(self.event_width, self.event_height)
        p.drawOn(canvas, self.event_left, self.pagesize[1] - self.event_top - p_size[1])
@@ -645,39 +636,37 @@ class ClassicInvoiceRenderer(BaseReportlabInvoiceRenderer):

        type_info_text = self.invoice.transmission_type_instance.pdf_info_text()
        if type_info_text:
-            story.append(FontFallbackParagraph(
+            story.append(PlainTextParagraph(
                type_info_text,
                self.stylesheet['WarningBlock']
            ))

        if self.invoice.custom_field:
-            story.append(FontFallbackParagraph(
+            story.append(PlainTextParagraph(
                '{}: {}'.format(
-                    self._clean_text(str(self.invoice.event.settings.invoice_address_custom_field)),
-                    self._clean_text(self.invoice.custom_field),
+                    str(self.invoice.event.settings.invoice_address_custom_field),
+                    self.invoice.custom_field,
                ),
                self.stylesheet['Normal']
            ))

        if self.invoice.internal_reference:
-            story.append(FontFallbackParagraph(
-                self._normalize(pgettext('invoice', 'Customer reference: {reference}').format(
-                    reference=self._clean_text(self.invoice.internal_reference),
-                )),
+            story.append(PlainTextParagraph(
+                pgettext('invoice', 'Customer reference: {reference}').format(
+                    reference=self.invoice.internal_reference,
+                ),
                self.stylesheet['Normal']
            ))

        if self.invoice.invoice_to_vat_id:
-            story.append(FontFallbackParagraph(
-                self._normalize(pgettext('invoice', 'Customer VAT ID')) + ': ' +
-                self._clean_text(self.invoice.invoice_to_vat_id),
+            story.append(PlainTextParagraph(
+                pgettext('invoice', 'Customer VAT ID') + ': ' + self.invoice.invoice_to_vat_id,
                self.stylesheet['Normal']
            ))

        if self.invoice.invoice_to_beneficiary:
-            story.append(FontFallbackParagraph(
-                self._normalize(pgettext('invoice', 'Beneficiary')) + ':<br />' +
-                self._clean_text(self.invoice.invoice_to_beneficiary),
+            story.append(PlainTextParagraph(
+                pgettext('invoice', 'Beneficiary') + ':\n' + self.invoice.invoice_to_beneficiary,
                self.stylesheet['Normal']
            ))

@@ -707,11 +696,11 @@ class ClassicInvoiceRenderer(BaseReportlabInvoiceRenderer):

        story = [
            NextPageTemplate('FirstPage'),
-            FontFallbackParagraph(
-                self._normalize(
+            PlainTextParagraph(
+                (
                    pgettext('invoice', 'Tax Invoice') if str(self.invoice.invoice_from_country) == 'AU'
                    else pgettext('invoice', 'Invoice')
-                ) if not self.invoice.is_cancellation else self._normalize(pgettext('invoice', 'Cancellation')),
+                ) if not self.invoice.is_cancellation else pgettext('invoice', 'Cancellation'),
                self.stylesheet['Heading1']
            ),
            Spacer(1, 5 * mm),
@@ -733,17 +722,17 @@ class ClassicInvoiceRenderer(BaseReportlabInvoiceRenderer):
        ]
        if has_taxes:
            tdata = [(
-                FontFallbackParagraph(self._normalize(pgettext('invoice', 'Description')), self.stylesheet['Bold']),
-                FontFallbackParagraph(self._normalize(pgettext('invoice', 'Qty')), self.stylesheet['BoldRightNoSplit']),
-                FontFallbackParagraph(self._normalize(pgettext('invoice', 'Tax rate')), self.stylesheet['BoldRightNoSplit']),
-                FontFallbackParagraph(self._normalize(pgettext('invoice', 'Net')), self.stylesheet['BoldRightNoSplit']),
-                FontFallbackParagraph(self._normalize(pgettext('invoice', 'Gross')), self.stylesheet['BoldRightNoSplit']),
+                PlainTextParagraph(pgettext('invoice', 'Description'), self.stylesheet['Bold']),
+                PlainTextParagraph(pgettext('invoice', 'Qty'), self.stylesheet['BoldRightNoSplit']),
+                PlainTextParagraph(pgettext('invoice', 'Tax rate'), self.stylesheet['BoldRightNoSplit']),
+                PlainTextParagraph(pgettext('invoice', 'Net'), self.stylesheet['BoldRightNoSplit']),
+                PlainTextParagraph(pgettext('invoice', 'Gross'), self.stylesheet['BoldRightNoSplit']),
            )]
        else:
            tdata = [(
-                FontFallbackParagraph(self._normalize(pgettext('invoice', 'Description')), self.stylesheet['Bold']),
-                FontFallbackParagraph(self._normalize(pgettext('invoice', 'Qty')), self.stylesheet['BoldRightNoSplit']),
-                FontFallbackParagraph(self._normalize(pgettext('invoice', 'Amount')), self.stylesheet['BoldRightNoSplit']),
+                PlainTextParagraph(pgettext('invoice', 'Description'), self.stylesheet['Bold']),
+                PlainTextParagraph(pgettext('invoice', 'Qty'), self.stylesheet['BoldRightNoSplit']),
+                PlainTextParagraph(pgettext('invoice', 'Amount'), self.stylesheet['BoldRightNoSplit']),
            )]

        def _group_key(line):
@@ -780,8 +769,8 @@ class ClassicInvoiceRenderer(BaseReportlabInvoiceRenderer):
            max_height = self.stylesheet['Normal'].leading * 5
            p_style = self.stylesheet['Normal']
            for __ in range(1000):
-                p = FontFallbackParagraph(
-                    self._clean_text(curr_description, tags=['br']),
+                p = PlainTextParagraph(
+                    curr_description,
                    p_style
                )
                h = p.wrap(max_width, doc.height)[1]
@@ -862,7 +851,7 @@ class ClassicInvoiceRenderer(BaseReportlabInvoiceRenderer):
                # Group together at the end of the invoice
                request_show_service_date = period_line
            elif period_line:
-                description_p_list.append(FontFallbackParagraph(
+                description_p_list.append(PlainTextParagraph(
                    period_line,
                    self.stylesheet['Fineprint']
                ))
@@ -874,7 +863,7 @@ class ClassicInvoiceRenderer(BaseReportlabInvoiceRenderer):
                        net_price=money_filter(net_value, self.invoice.event.currency),
                        gross_price=money_filter(gross_value, self.invoice.event.currency),
                    )
-                    description_p_list.append(FontFallbackParagraph(
+                    description_p_list.append(PlainTextParagraph(
                        single_price_line,
                        self.stylesheet['Fineprint']
                    ))
@@ -883,11 +872,11 @@ class ClassicInvoiceRenderer(BaseReportlabInvoiceRenderer):
                    description_p_list.pop(0),
                    str(len(lines)),
                    localize(tax_rate) + " %",
-                    FontFallbackParagraph(
+                    PlainTextParagraph(
                        money_filter(net_value * len(lines), self.invoice.event.currency).replace('\xa0', ' '),
                        self.stylesheet['NormalRight']
                    ),
-                    FontFallbackParagraph(
+                    PlainTextParagraph(
                        money_filter(gross_value * len(lines), self.invoice.event.currency).replace('\xa0', ' '),
                        self.stylesheet['NormalRight']
                    ),
@@ -904,14 +893,14 @@ class ClassicInvoiceRenderer(BaseReportlabInvoiceRenderer):
                    single_price_line = pgettext('invoice', 'Single price: {price}').format(
                        price=money_filter(gross_value, self.invoice.event.currency),
                    )
-                    description_p_list.append(FontFallbackParagraph(
+                    description_p_list.append(PlainTextParagraph(
                        single_price_line,
                        self.stylesheet['Fineprint']
                    ))
                tdata.append((
                    description_p_list.pop(0),
                    str(len(lines)),
-                    FontFallbackParagraph(
+                    PlainTextParagraph(
                        money_filter(gross_value * len(lines), self.invoice.event.currency).replace('\xa0', ' '),
                        self.stylesheet['NormalRight']
                    ),
@@ -944,12 +933,12 @@ class ClassicInvoiceRenderer(BaseReportlabInvoiceRenderer):

        if has_taxes:
            tdata.append([
-                FontFallbackParagraph(self._normalize(pgettext('invoice', 'Invoice total')), self.stylesheet['Bold']), '', '', '',
+                PlainTextParagraph(pgettext('invoice', 'Invoice total'), self.stylesheet['Bold']), '', '', '',
                money_filter(total, self.invoice.event.currency)
            ])
        else:
            tdata.append([
-                FontFallbackParagraph(self._normalize(pgettext('invoice', 'Invoice total')), self.stylesheet['Bold']), '',
+                PlainTextParagraph(pgettext('invoice', 'Invoice total'), self.stylesheet['Bold']), '',
                money_filter(total, self.invoice.event.currency)
            ])

@@ -958,12 +947,12 @@ class ClassicInvoiceRenderer(BaseReportlabInvoiceRenderer):
                pending_sum = self.invoice.order.pending_sum
                if pending_sum != total:
                    tdata.append(
-                        [FontFallbackParagraph(self._normalize(pgettext('invoice', 'Received payments')), self.stylesheet['Normal'])] +
+                        [PlainTextParagraph(pgettext('invoice', 'Received payments'), self.stylesheet['Normal'])] +
                        (['', '', ''] if has_taxes else ['']) +
                        [money_filter(pending_sum - total, self.invoice.event.currency)]
                    )
                    tdata.append(
-                        [FontFallbackParagraph(self._normalize(pgettext('invoice', 'Outstanding payments')), self.stylesheet['Bold'])] +
+                        [PlainTextParagraph(pgettext('invoice', 'Outstanding payments'), self.stylesheet['Bold'])] +
                        (['', '', ''] if has_taxes else ['']) +
                        [money_filter(pending_sum, self.invoice.event.currency)]
                    )
@@ -980,12 +969,12 @@ class ClassicInvoiceRenderer(BaseReportlabInvoiceRenderer):
                    s=Sum('amount')
                )['s'] or Decimal('0.00')
                tdata.append(
-                    [FontFallbackParagraph(self._normalize(pgettext('invoice', 'Paid by gift card')), self.stylesheet['Normal'])] +
+                    [PlainTextParagraph(pgettext('invoice', 'Paid by gift card'), self.stylesheet['Normal'])] +
                    (['', '', ''] if has_taxes else ['']) +
                    [money_filter(giftcard_sum, self.invoice.event.currency)]
                )
                tdata.append(
-                    [FontFallbackParagraph(self._normalize(pgettext('invoice', 'Remaining amount')), self.stylesheet['Bold'])] +
+                    [PlainTextParagraph(pgettext('invoice', 'Remaining amount'), self.stylesheet['Bold'])] +
                    (['', '', ''] if has_taxes else ['']) +
                    [money_filter(total - giftcard_sum, self.invoice.event.currency)]
                )
@@ -1008,14 +997,14 @@ class ClassicInvoiceRenderer(BaseReportlabInvoiceRenderer):
        story.append(Spacer(1, 10 * mm))

        if request_show_service_date:
-            story.append(FontFallbackParagraph(
-                self._normalize(pgettext('invoice', 'Invoice period: {daterange}').format(daterange=request_show_service_date)),
+            story.append(PlainTextParagraph(
+                pgettext('invoice', 'Invoice period: {daterange}').format(daterange=request_show_service_date),
                self.stylesheet['Normal']
            ))

        if self.invoice.payment_provider_text:
            story.append(FontFallbackParagraph(
-                self._normalize(self.invoice.payment_provider_text),
+                self._clean_text(self.invoice.payment_provider_text, tags=['br', 'b']),
                self.stylesheet['Normal']
            ))

@@ -1039,10 +1028,10 @@ class ClassicInvoiceRenderer(BaseReportlabInvoiceRenderer):
            ('FONTNAME', (0, 0), (-1, -1), self.font_regular),
        ]
        thead = [
-            FontFallbackParagraph(self._normalize(pgettext('invoice', 'Tax rate')), self.stylesheet['Fineprint']),
-            FontFallbackParagraph(self._normalize(pgettext('invoice', 'Net value')), self.stylesheet['FineprintRight']),
-            FontFallbackParagraph(self._normalize(pgettext('invoice', 'Gross value')), self.stylesheet['FineprintRight']),
-            FontFallbackParagraph(self._normalize(pgettext('invoice', 'Tax')), self.stylesheet['FineprintRight']),
+            PlainTextParagraph(pgettext('invoice', 'Tax rate'), self.stylesheet['Fineprint']),
+            PlainTextParagraph(pgettext('invoice', 'Net value'), self.stylesheet['FineprintRight']),
+            PlainTextParagraph(pgettext('invoice', 'Gross value'), self.stylesheet['FineprintRight']),
+            PlainTextParagraph(pgettext('invoice', 'Tax'), self.stylesheet['FineprintRight']),
            ''
        ]
        tdata = [thead]
@@ -1053,7 +1042,7 @@ class ClassicInvoiceRenderer(BaseReportlabInvoiceRenderer):
                continue
            tax = taxvalue_map[idx]
            tdata.append([
-                FontFallbackParagraph(self._normalize(localize(rate) + " % " + name), self.stylesheet['Fineprint']),
+                PlainTextParagraph(localize(rate) + " % " + name, self.stylesheet['Fineprint']),
                money_filter(gross - tax, self.invoice.event.currency),
                money_filter(gross, self.invoice.event.currency),
                money_filter(tax, self.invoice.event.currency),
@@ -1072,7 +1061,7 @@ class ClassicInvoiceRenderer(BaseReportlabInvoiceRenderer):
            table.setStyle(TableStyle(tstyledata))
            story.append(Spacer(5 * mm, 5 * mm))
            story.append(KeepTogether([
-                FontFallbackParagraph(self._normalize(pgettext('invoice', 'Included taxes')), self.stylesheet['FineprintHeading']),
+                PlainTextParagraph(pgettext('invoice', 'Included taxes'), self.stylesheet['FineprintHeading']),
                table
            ]))

@@ -1089,7 +1078,7 @@ class ClassicInvoiceRenderer(BaseReportlabInvoiceRenderer):
                    net = gross - tax

                    tdata.append([
-                        FontFallbackParagraph(self._normalize(localize(rate) + " % " + name), self.stylesheet['Fineprint']),
+                        PlainTextParagraph(localize(rate) + " % " + name, self.stylesheet['Fineprint']),
                        fmt(net), fmt(gross), fmt(tax), ''
                    ])

@@ -1098,13 +1087,13 @@ class ClassicInvoiceRenderer(BaseReportlabInvoiceRenderer):

                story.append(KeepTogether([
                    Spacer(1, height=2 * mm),
-                    FontFallbackParagraph(
-                        self._normalize(pgettext(
+                    PlainTextParagraph(
+                        pgettext(
                            'invoice', 'Using the conversion rate of 1:{rate} as published by the {authority} on '
                                       '{date}, this corresponds to:'
                        ).format(rate=localize(self.invoice.foreign_currency_rate),
                                 authority=SOURCE_NAMES.get(self.invoice.foreign_currency_source, "?"),
-                                 date=date_format(self.invoice.foreign_currency_rate_date, "SHORT_DATE_FORMAT"))),
+                                 date=date_format(self.invoice.foreign_currency_rate_date, "SHORT_DATE_FORMAT")),
                        self.stylesheet['Fineprint']
                    ),
                    Spacer(1, height=3 * mm),
@@ -1113,14 +1102,14 @@ class ClassicInvoiceRenderer(BaseReportlabInvoiceRenderer):
        elif self.invoice.foreign_currency_display and self.invoice.foreign_currency_rate:
            foreign_total = round_decimal(total * self.invoice.foreign_currency_rate)
            story.append(Spacer(1, 5 * mm))
-            story.append(FontFallbackParagraph(self._normalize(
+            story.append(PlainTextParagraph(
                pgettext(
                    'invoice', 'Using the conversion rate of 1:{rate} as published by the {authority} on '
                               '{date}, the invoice total corresponds to {total}.'
                ).format(rate=localize(self.invoice.foreign_currency_rate),
                         date=date_format(self.invoice.foreign_currency_rate_date, "SHORT_DATE_FORMAT"),
                         authority=SOURCE_NAMES.get(self.invoice.foreign_currency_source, "?"),
-                         total=fmt(foreign_total))),
+                         total=fmt(foreign_total)),
                self.stylesheet['Fineprint']
            ))

@@ -1162,11 +1151,8 @@ class Modern1Renderer(ClassicInvoiceRenderer):
    def _draw_invoice_from(self, canvas):
        if not self.invoice.address_invoice_from:
            return
-        c = [
-            self._clean_text(l)
-            for l in self.invoice.address_invoice_from.strip().split('\n')
-        ]
-        p = FontFallbackParagraph(self._normalize(' · '.join(c)), style=self.stylesheet['Sender'])
+        c = self.invoice.address_invoice_from.strip().split('\n')
+        p = PlainTextParagraph(' · '.join(c), style=self.stylesheet['Sender'])
        p.wrapOn(canvas, self.invoice_to_width, 15.7 * mm)
        p.drawOn(canvas, self.invoice_to_left, self.pagesize[1] - self.invoice_to_top + 2 * mm)
        super()._draw_invoice_from(canvas)
@@ -1225,8 +1211,8 @@ class Modern1Renderer(ClassicInvoiceRenderer):
                _draw(pgettext('invoice', 'Order code'), self.invoice.order.full_code, value_size, self.left_margin, 45 * mm, **kwargs)
            ]

-            p = FontFallbackParagraph(
-                self._normalize(date_format(self.invoice.date, "DATE_FORMAT")),
+            p = PlainTextParagraph(
+                date_format(self.invoice.date, "DATE_FORMAT"),
                style=ParagraphStyle(name=f'Normal{value_size}', fontName=self.font_regular, fontSize=value_size, leading=value_size * 1.2)
            )
            w = stringWidth(p.text, p.frags[0].fontName, p.frags[0].fontSize)
@@ -1283,7 +1269,7 @@ class Modern1SimplifiedRenderer(Modern1Renderer):
        i = []

        if not self.invoice.event.has_subevents and self.invoice.event.settings.show_dates_on_frontpage:
-            i.append(FontFallbackParagraph(
+            i.append(PlainTextParagraph(
                pgettext('invoice', 'Event date: {date_range}').format(
                    date_range=self.invoice.event.get_date_range_display(),
                ),
@@ -1,69 +0,0 @@
-#
-# 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/>.
-#
-import time
-
-from django.core.management.base import BaseCommand
-from django_scopes import scopes_disabled
-from tqdm import tqdm
-
-from pretix.base.models import (
-    Invoice, InvoiceAddress, Order, OrderPayment, OrderPosition, OrderRefund,
-)
-
-
-class Command(BaseCommand):
-    help = "Recreate order search index"
-
-    def add_arguments(self, parser):
-        parser.add_argument(
-            "--slowdown",
-            dest="interval",
-            type=int,
-            default=0,
-            help="Interval for staggered execution. If set to a value different then zero, we will "
-                 "wait this many milliseconds between every order we process.",
-        )
-
-    @scopes_disabled()
-    def handle(self, *args, **options):
-        querysets = [
-            Order.objects.all(),
-            OrderPosition.all.all(),
-            OrderPayment.objects.all(),
-            OrderRefund.objects.all(),
-            InvoiceAddress.objects.filter(order__isnull=False),
-            Invoice.objects.all(),
-        ]
-
-        for qs in querysets:
-            last_pk = 0
-            with tqdm(total=qs.count()) as pbar:
-                while True:
-                    batch = list(qs.filter(pk__gt=last_pk)[:5000])
-                    if not batch:
-                        break
-
-                    for o in batch:
-                        o._update_search_index()
-                        time.sleep(0)
-                        pbar.update(1)
-                    last_pk = batch[-1].pk
@@ -44,7 +44,8 @@ class Command(Parent):
            # Start the vite server in the background
            vite_server = subprocess.Popen(
                ["npm", "run", "dev:control"],
-                cwd=Path(__file__).parent.parent.parent.parent.parent
+                cwd=Path(__file__).parent.parent.parent.parent.parent,
+                stdin=subprocess.DEVNULL
            )

            def cleanup():
@@ -26,6 +26,7 @@ from django.utils.translation import gettext_lazy as _

 class BaseMediaType:
    medium_created_by_server = False
+    medium_created_from_unknown_supported = False
    supports_orderposition = False
    supports_giftcard = False

@@ -56,7 +57,7 @@ class BaseMediaType:
    def is_active(self, organizer):
        return organizer.settings.get(f'reusable_media_type_{self.identifier}', as_type=bool, default=False)

-    def handle_unknown(self, organizer, identifier, user, auth):
+    def handle_unknown(self, organizer, identifier, user, auth, force_create=False):
        pass

    def handle_new(self, organizer, medium, user, auth):
@@ -88,23 +89,32 @@ class NfcUidMediaType(BaseMediaType):
    verbose_name = _('NFC UID-based')
    icon = 'pretixbase/img/media/nfc_uid.svg'
    medium_created_by_server = False
+    medium_created_from_unknown_supported = True
    supports_giftcard = True
-    supports_orderposition = False
+    supports_orderposition = True

-    def handle_unknown(self, organizer, identifier, user, auth):
+    def handle_unknown(self, organizer, identifier, user, auth, force_create=False):
        from pretix.base.models import GiftCard, ReusableMedium

-        if organizer.settings.get(f'reusable_media_type_{self.identifier}_autocreate_giftcard', as_type=bool):
+        create_giftcard = organizer.settings.get(f'reusable_media_type_{self.identifier}_autocreate_giftcard', as_type=bool)
+        if create_giftcard or force_create:
            if identifier.startswith("08"):
                # Don't create gift cards for NFC UIDs that start with 08, which represents NFC cards that issue random
                # UIDs on every read, so they won't be useful.
                return
            with transaction.atomic():
-                gc = GiftCard.objects.create(
-                    issuer=organizer,
-                    expires=organizer.default_gift_card_expiry,
-                    currency=organizer.settings.get(f'reusable_media_type_{self.identifier}_autocreate_giftcard_currency'),
-                )
+                if create_giftcard:
+                    gc = GiftCard.objects.create(
+                        issuer=organizer,
+                        expires=organizer.default_gift_card_expiry,
+                        currency=organizer.settings.get(f'reusable_media_type_{self.identifier}_autocreate_giftcard_currency'),
+                    )
+                    gc.log_action(
+                        'pretix.giftcards.created',
+                        user=user, auth=auth,
+                    )
+                else:
+                    gc = None
                m = ReusableMedium.objects.create(
                    type=self.identifier,
                    identifier=identifier,
@@ -116,10 +126,6 @@ class NfcUidMediaType(BaseMediaType):
                    'pretix.reusable_medium.created.auto',
                    user=user, auth=auth,
                )
-                gc.log_action(
-                    'pretix.giftcards.created',
-                    user=user, auth=auth,
-                )
                return m


@@ -129,7 +135,7 @@ class NfcMf0aesMediaType(BaseMediaType):
    icon = 'pretixbase/img/media/nfc_secure.svg'
    medium_created_by_server = False
    supports_giftcard = True
-    supports_orderposition = False
+    supports_orderposition = True

    def handle_new(self, organizer, medium, user, auth):
        from pretix.base.models import GiftCard
@@ -282,10 +282,12 @@ def metric_values():

    # Throwaway metrics
    exact_tables = [
-        Order, OrderPosition, Invoice, Event, Organizer
+        Order, Invoice, Event, Organizer
    ]
    for m in apps.get_models():  # Count all models
-        if any(issubclass(m, p) for p in exact_tables):
+        if issubclass(m, OrderPosition):
+            metrics['pretix_model_instances']['{model="%s"}' % m._meta] = m.all.count()
+        elif any(issubclass(m, p) for p in exact_tables):
            metrics['pretix_model_instances']['{model="%s"}' % m._meta] = m.objects.count()
        else:
            metrics['pretix_model_instances']['{model="%s"}' % m._meta] = estimate_count_fast(m)
@@ -74,6 +74,7 @@ class LocaleMiddleware(MiddlewareMixin):

    def process_request(self, request: HttpRequest):
        language = get_language_from_request(request)
+        region = None
        # Normally, this middleware runs *before* the event is set. However, on event frontend pages it
        # might be run a second time by pretix.presale.EventMiddleware and in this case the event is already
        # set and can be taken into account for the decision.
@@ -94,15 +95,16 @@ class LocaleMiddleware(MiddlewareMixin):
                if '-' not in language and settings_holder.settings.region:
                    language += '-' + settings_holder.settings.region
                if settings_holder.settings.region:
-                    set_region(settings_holder.settings.region)
+                    region = settings_holder.settings.region
        else:
            gs = global_settings_object(request)
            if '-' not in language and gs.settings.region:
                language += '-' + gs.settings.region
            if gs.settings.region:
-                set_region(gs.settings.region)
+                region = gs.settings.region

        translation.activate(language)
+        set_region(region)
        request.LANGUAGE_CODE = get_language_without_region()

        tzname = None
@@ -0,0 +1,35 @@
+# Generated by Django 4.2.26 on 2025-11-24 11:32
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ("pretixbase", "0299_itemprogramtime_location"),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name="reusablemedium",
+            name="claim_token",
+            field=models.CharField(max_length=200, null=True),
+        ),
+        migrations.AddField(
+            model_name="reusablemedium",
+            name="label",
+            field=models.CharField(max_length=200, null=True),
+        ),
+        # use temporary related_name "linked_mediums" for ManyToManyField, so we can migrate existing data
+        migrations.AddField(
+            model_name="reusablemedium",
+            name="linked_orderpositions",
+            field=models.ManyToManyField(
+                related_name="linked_mediums", to="pretixbase.orderposition"
+            ),
+        ),
+        migrations.RunSQL(
+            sql="INSERT INTO pretixbase_reusablemedium_linked_orderpositions (reusablemedium_id, orderposition_id) SELECT id, linked_orderposition_id FROM pretixbase_reusablemedium WHERE linked_orderposition_id IS NOT NULL;",
+            reverse_sql="DELETE FROM pretixbase_reusablemedium_linked_orderpositions;",
+        ),
+    ]
@@ -1,132 +0,0 @@
-# Generated by Django 5.2.12 on 2026-05-22 12:40
-
-import django.contrib.postgres.indexes
-import django.contrib.postgres.search
-import django.db.models.deletion
-from django.contrib.postgres.operations import UnaccentExtension
-from django.db import migrations, models
-
-from pretix.helpers.migration_utils import PostgreSQLAndStateOnly
-
-
-class Migration(migrations.Migration):
-
-    dependencies = [
-        ("pretixbase", "0299_itemprogramtime_location"),
-    ]
-
-    operations = [
-        PostgreSQLAndStateOnly(
-            UnaccentExtension(),
-            migrations.RunSQL(
-                sql="""
-                CREATE TEXT SEARCH CONFIGURATION pretix_search( COPY = english );
-                ALTER TEXT SEARCH CONFIGURATION pretix_search
-                ALTER MAPPING FOR hword, hword_part, word
-                WITH unaccent, english_stem;
-                """,
-                reverse_sql="""
-                DROP TEXT SEARCH CONFIGURATION pretix_search;
-                """
-            ),
-            migrations.CreateModel(
-                name="OrderSearchIndex",
-                fields=[
-                    (
-                        "id",
-                        models.BigAutoField(
-                            auto_created=True, primary_key=True, serialize=False
-                        ),
-                    ),
-                    ("last_modified", models.DateTimeField(auto_now=True)),
-                    ("search_vector", django.contrib.postgres.search.SearchVectorField()),
-                    (
-                        "organizer",
-                        models.ForeignKey(
-                            on_delete=django.db.models.deletion.CASCADE,
-                            to="pretixbase.organizer",
-                        ),
-                    ),
-                    (
-                        "event",
-                        models.ForeignKey(
-                            on_delete=django.db.models.deletion.CASCADE,
-                            to="pretixbase.event",
-                        ),
-                    ),
-                    (
-                        "order",
-                        models.ForeignKey(
-                            on_delete=django.db.models.deletion.CASCADE,
-                            to="pretixbase.order",
-                        ),
-                    ),
-                    (
-                        "orderpayment",
-                        models.OneToOneField(
-                            null=True,
-                            on_delete=django.db.models.deletion.CASCADE,
-                            related_name="search_index",
-                            to="pretixbase.orderpayment",
-                        ),
-                    ),
-                    (
-                        "orderposition",
-                        models.OneToOneField(
-                            null=True,
-                            on_delete=django.db.models.deletion.CASCADE,
-                            related_name="search_index",
-                            to="pretixbase.orderposition",
-                        ),
-                    ),
-                    (
-                        "orderrefund",
-                        models.OneToOneField(
-                            null=True,
-                            on_delete=django.db.models.deletion.CASCADE,
-                            related_name="search_index",
-                            to="pretixbase.orderrefund",
-                        ),
-                    ),
-                    (
-                        "invoiceaddress",
-                        models.OneToOneField(
-                            null=True,
-                            on_delete=django.db.models.deletion.CASCADE,
-                            related_name="search_index",
-                            to="pretixbase.invoiceaddress",
-                        ),
-                    ),
-                    (
-                        "invoice",
-                        models.OneToOneField(
-                            null=True,
-                            on_delete=django.db.models.deletion.CASCADE,
-                            related_name="search_index",
-                            to="pretixbase.invoice",
-                        ),
-                    ),
-                ],
-                options={
-                    "indexes": [
-                        django.contrib.postgres.indexes.GinIndex(
-                            models.F("search_vector"), name="ordersearchindex_vector"
-                        )
-                    ],
-                    "constraints": [
-                        models.UniqueConstraint(
-                            condition=models.Q(
-                                ("orderpayment__isnull", True),
-                                ("orderposition__isnull", True),
-                                ("orderrefund__isnull", True),
-                                ("invoiceaddress__isnull", True),
-                                ("invoice__isnull", True),
-                            ),
-                            fields=("order",),
-                            name="ordersearchindex_one_per_order",
-                        ),
-                    ],
-                },
-            ),
-        ),
-    ]
@@ -0,0 +1,44 @@
+# Generated by Django 4.2.26 on 2025-11-24 11:32
+
+from django.db import migrations, models
+
+
+def reverse(apps, schema_editor):
+    ReusableMedium = apps.get_model('pretixbase', 'ReusableMedium')
+
+    qs = ReusableMedium.linked_orderpositions.through.objects
+    objs = []
+    # get last added orderposition from linked_orderpositions
+    for rm_id, op_id in qs.filter(id__in=qs.values("reusablemedium_id").annotate(max_id=models.Max('id')).values('max_id')).values_list("reusablemedium_id", "orderposition_id"):
+        obj = ReusableMedium(
+            id=rm_id,
+            linked_orderposition_id=op_id,
+        )
+        objs.append(obj)
+
+    ReusableMedium.objects.bulk_update(objs, ['linked_orderposition_id'])
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ("pretixbase", "0300_add_reusablemedium_label"),
+    ]
+
+    operations = [
+        # according to the docs, UPDATE FROM should run similarly on sqlite and postgres, but I could not get it to work
+        # so roll back the data migration with code before deleting data from through-table in 0297
+        migrations.RunPython(migrations.RunPython.noop, reverse),
+        migrations.RemoveField(
+            model_name="reusablemedium",
+            name="linked_orderposition",
+        ),
+        # change related_name for new ManyToManyField to previously used linked_media
+        migrations.AlterField(
+            model_name="reusablemedium",
+            name="linked_orderpositions",
+            field=models.ManyToManyField(
+                related_name="linked_media", to="pretixbase.orderposition"
+            ),
+        ),
+    ]
@@ -56,7 +56,6 @@ from .organizer import (
    Organizer, Organizer_SettingsStore, SalesChannel, Team, TeamAPIToken,
    TeamInvite,
 )
-from .search import OrderSearchIndex
 from .seating import Seat, SeatCategoryMapping, SeatingPlan
 from .tax import TaxRule
 from .vouchers import Voucher
@@ -57,7 +57,7 @@ from django_otp.models import Device
 from django_scopes import scopes_disabled

 from pretix.base.i18n import language
-from pretix.helpers.urls import build_absolute_uri
+from pretix.helpers.urls import mainreverse_absolute

 from ...helpers.countries import FastCountryField
 from ...helpers.u2f import pub_key_from_der, websafe_decode
@@ -378,7 +378,7 @@ class User(AbstractBaseUser, PermissionsMixin, LoggingMixin):
            {
                'user': self,
                'messages': msg,
-                'url': build_absolute_uri('control:user.settings'),
+                'url': mainreverse_absolute('control:user.settings'),
                'instance': settings.PRETIX_INSTANCE_NAME,
            },
            event=None,
@@ -466,7 +466,7 @@ class User(AbstractBaseUser, PermissionsMixin, LoggingMixin):
            {
                'instance': settings.PRETIX_INSTANCE_NAME,
                'user': self,
-                'url': (build_absolute_uri('control:auth.forgot.recover')
+                'url': (mainreverse_absolute('control:auth.forgot.recover')
                        + '?id=%d&token=%s' % (self.id, default_token_generator.make_token(self)))
            },
            None, locale=self.locale, user=self
@@ -346,11 +346,14 @@ class Checkin(models.Model):
    REASON_INCOMPLETE = 'incomplete'
    REASON_ALREADY_REDEEMED = 'already_redeemed'
    REASON_AMBIGUOUS = 'ambiguous'
+    REASON_MEDIUM_INVALID = 'medium_invalid'
+    REASON_MEDIUM_EXISTS = 'medium_exists'
    REASON_ERROR = 'error'
    REASON_BLOCKED = 'blocked'
    REASON_UNAPPROVED = 'unapproved'
    REASON_INVALID_TIME = 'invalid_time'
    REASON_ANNULLED = 'annulled'
+    REASON_ALREADY_EXCHANGED = 'already_exchanged'
    REASONS = (
        (REASON_CANCELED, _('Order canceled')),
        (REASON_INVALID, _('Unknown ticket')),
@@ -366,6 +369,9 @@ class Checkin(models.Model):
        (REASON_UNAPPROVED, _('Order not approved')),
        (REASON_INVALID_TIME, _('Ticket not valid at this time')),
        (REASON_ANNULLED, _('Check-in annulled')),
+        (REASON_ALREADY_EXCHANGED, _('Ticket already exchanged')),
+        (REASON_MEDIUM_INVALID, _('Reusable medium invalid')),
+        (REASON_MEDIUM_EXISTS, _('Reusable medium already exists')),
    )

    successful = models.BooleanField(
@@ -167,7 +167,7 @@ class Customer(LoggedModel):

    def send_security_notice(self, message, email=None):
        from pretix.base.services.mail import SendMailException, mail
-        from pretix.multidomain.urlreverse import build_absolute_uri
+        from pretix.multidomain.urlreverse import eventreverse_absolute

        try:
            with language(self.locale):
@@ -178,7 +178,7 @@ class Customer(LoggedModel):
                    {
                        **self.get_email_context(),
                        'message': str(message),
-                        'url': build_absolute_uri(self.organizer, 'presale:organizer.customer.index')
+                        'url': eventreverse_absolute(self.organizer, 'presale:organizer.customer.index')
                    },
                    customer=self,
                    organizer=self.organizer,
@@ -299,12 +299,12 @@ class Customer(LoggedModel):

    def send_activation_mail(self):
        from pretix.base.services.mail import mail
-        from pretix.multidomain.urlreverse import build_absolute_uri
+        from pretix.multidomain.urlreverse import eventreverse_absolute
        from pretix.presale.forms.customer import TokenGenerator

        ctx = self.get_email_context()
        token = TokenGenerator().make_token(self)
-        ctx['url'] = build_absolute_uri(
+        ctx['url'] = eventreverse_absolute(
            self.organizer,
            'presale:organizer.customer.activate'
        ) + '?id=' + self.identifier + '&token=' + token
@@ -395,7 +395,7 @@ class AttendeeProfile(models.Model):
            self.company,
            self.street,
            (self.zipcode or '') + ' ' + (self.city or '') + ' ' + (self.state_for_address or ''),
-            self.country.name,
+            self.country.name if self.country else None,
        ]
        for a in self.answers:
            value = a.get('value')
@@ -40,6 +40,7 @@ import warnings
 from collections import Counter, OrderedDict, defaultdict
 from datetime import datetime, time, timedelta
 from operator import attrgetter
+from typing import TYPE_CHECKING
 from urllib.parse import urljoin
 from zoneinfo import ZoneInfo

@@ -79,10 +80,16 @@ from pretix.helpers.thumb import get_thumbnail
 from ..settings import settings_hierarkey
 from .organizer import Organizer, Team

+if TYPE_CHECKING:
+    from hierarkey.proxy import HierarkeyProxy
+
 logger = logging.getLogger(__name__)


 class EventMixin:
+    if TYPE_CHECKING:
+        settings: HierarkeyProxy
+
    def clean(self):
        if self.presale_start and self.presale_end and self.presale_start > self.presale_end:
            raise ValidationError({'presale_end': _('The end of the presale period has to be later than its start.')})
@@ -724,7 +731,7 @@ class Event(EventMixin, LoggedModel):

    @property
    def social_image(self):
-        from pretix.multidomain.urlreverse import build_absolute_uri
+        from pretix.multidomain.urlreverse import eventreverse_absolute

        img = None
        logo_file = self.settings.get('logo_image', as_type=str, default='')[7:]
@@ -742,7 +749,7 @@ class Event(EventMixin, LoggedModel):
                logger.exception(f'Failed to create thumbnail of {logo_file}')
                img = default_storage.url(logo_file)
        if img:
-            return urljoin(build_absolute_uri(self, 'presale:event.index'), img)
+            return urljoin(eventreverse_absolute(self, 'presale:event.index'), img)

    def _seats(self, ignore_voucher=None):
        from .seating import Seat
@@ -883,6 +890,8 @@ class Event(EventMixin, LoggedModel):
            ItemProgramTime, ItemVariationMetaValue, Question, Quota,
        )

+        is_cross_organizer = other.organizer_id != self.organizer_id
+
        #  Note: avoid self.set_active_plugins(), it causes trouble e.g. for the badges plugin.
        #  Plugins can create data in installed() hook based on existing data of the event.
        #  Calling set_active_plugins() results in defaults being created while actually data
@@ -897,7 +906,7 @@ class Event(EventMixin, LoggedModel):
        self.save()
        self.log_action('pretix.object.cloned', data={'source': other.slug, 'source_id': other.pk})

-        if hasattr(other, 'alternative_domain_assignment'):
+        if hasattr(other, 'alternative_domain_assignment') and not is_cross_organizer:
            other.alternative_domain_assignment.domain.event_assignments.create(event=self)

        if not self.all_sales_channels:
@@ -911,6 +920,15 @@ class Event(EventMixin, LoggedModel):
            for emv in EventMetaValue.objects.filter(event=other):
                emv.pk = None
                emv.event = self
+                if is_cross_organizer:
+                    try:
+                        emv.property = self.organizer.meta_properties.get(name=emv.property.name)
+                    except EventMetaProperty.DoesNotExist:
+                        meta_prop = emv.property
+                        meta_prop.pk = None
+                        meta_prop.organizer = self.organizer
+                        meta_prop.save(force_insert=True)
+                        emv.property = meta_prop
                emv.save(force_insert=True)

        for fl in EventFooterLink.objects.filter(event=other):
@@ -964,13 +982,13 @@ class Event(EventMixin, LoggedModel):
            if i.tax_rule_id:
                i.tax_rule = tax_map[i.tax_rule_id]

-            if i.grant_membership_type and other.organizer_id != self.organizer_id:
+            if i.grant_membership_type and is_cross_organizer:
                i.grant_membership_type = None

            i.save()  # no force_insert since i.picture.save could have already inserted
            i.log_action('pretix.object.cloned')

-            if require_membership_types and other.organizer_id == self.organizer_id:
+            if require_membership_types and not is_cross_organizer:
                i.require_membership_types.set(require_membership_types)

            if not i.all_sales_channels:
@@ -985,7 +1003,7 @@ class Event(EventMixin, LoggedModel):
                v._prefetched_objects_cache = {}
                v.save(force_insert=True)

-                if require_membership_types and other.organizer_id == self.organizer_id:
+                if require_membership_types and not is_cross_organizer:
                    v.require_membership_types.set(require_membership_types)
                if not v.all_sales_channels:
                    v.limit_sales_channels.set(self.organizer.sales_channels.filter(identifier__in=[s.identifier for s in limit_sales_channels]))
@@ -1869,6 +1887,8 @@ class EventMetaValue(LoggedModel):
            self.event.cache.clear()

    def save(self, *args, **kwargs):
+        if self.event and self.event.organizer != self.property.organizer:
+            raise ValidationError(_("Property and event must belong to the same organizer."))
        super().save(*args, **kwargs)
        if self.event:
            self.event.cache.clear()
@@ -47,7 +47,6 @@ from django.utils.timezone import now
 from django.utils.translation import gettext_lazy as _, pgettext
 from django_scopes import ScopedManager

-from pretix.base.models.orders import SearchIndexModelMixin
 from pretix.base.settings import COUNTRIES_WITH_STATE_IN_ADDRESS
 from pretix.helpers.countries import FastCountryField

@@ -65,7 +64,7 @@ def today():
    return timezone.now().date()


-class Invoice(SearchIndexModelMixin, models.Model):
+class Invoice(models.Model):
    """
    Represents an invoice that is issued because of an order. Because invoices are legally required
    not to change, this object duplicates a lot of data (e.g. the invoice address).
@@ -207,10 +206,6 @@ class Invoice(SearchIndexModelMixin, models.Model):
    plugin_data = models.JSONField(default=dict)

    objects = ScopedManager(organizer='event__organizer')
-    search_index_fields = [
-        "invoice_no",
-        "full_invoice_no",
-    ]

    @staticmethod
    def _to_numeric_invoice_number(number, places):
@@ -452,11 +452,16 @@ class Item(LoggedModel):
    MEDIA_POLICY_REUSE = 'reuse'
    MEDIA_POLICY_NEW = 'new'
    MEDIA_POLICY_REUSE_OR_NEW = 'reuse_or_new'
+    MEDIA_POLICY_APPEND = 'append'
+    MEDIA_POLICY_APPEND_OR_NEW = 'append_or_new'
    MEDIA_POLICIES = (
-        (None, _("Don't use re-usable media, use regular one-off tickets")),
-        (MEDIA_POLICY_REUSE, _('Require an existing medium to be re-used')),
+        (None, _("Don't use reusable media, use regular one-off tickets")),
        (MEDIA_POLICY_NEW, _('Require a previously unknown medium to be newly added')),
-        (MEDIA_POLICY_REUSE_OR_NEW, _('Require either an existing or a new medium to be used')),
+        (MEDIA_POLICY_REUSE, _('Require an existing medium to be reused, replacing any previous tickets')),
+        (MEDIA_POLICY_REUSE_OR_NEW, _('Require either an existing or a new medium to be used, replacing any previous tickets')),
+        (MEDIA_POLICY_APPEND, _('Require an existing medium to be reused, adding to any previous tickets')),
+        (MEDIA_POLICY_APPEND_OR_NEW,
+         _('Require either an existing or a new medium to be used, adding to any previous tickets')),
    )

    objects = ItemQuerySetManager()
@@ -769,7 +774,7 @@ class Item(LoggedModel):
        null=True, blank=True, max_length=16,
        verbose_name=_('Reusable media policy'),
        help_text=_(
-            'If this product should be stored on a re-usable physical medium, you can attach a physical media policy. '
+            'If this product should be stored on a reusable physical medium, you can attach a physical media policy. '
            'This is not required for regular tickets, which just use a one-time barcode, but only for products like '
            'renewable season tickets or re-chargeable gift card wristbands. '
            'This is an advanced feature that also requires specific configuration of ticketing and printing settings.'
@@ -778,7 +783,7 @@ class Item(LoggedModel):
    media_type = models.CharField(
        max_length=100,
        null=True, blank=True,
-        choices=[(None, _("Don't use re-usable media, use regular one-off tickets"))] + [(k, v) for k, v in MEDIA_TYPES.items()],
+        choices=[(None, _("Don't use reusable media, use regular one-off tickets"))] + [(k, v) for k, v in MEDIA_TYPES.items()],
        verbose_name=_('Reusable media type'),
        help_text=_(
            'Select the type of physical medium that should be used for this product. Note that not all media types '
@@ -995,6 +1000,11 @@ class Item(LoggedModel):
                raise ValidationError(_('The selected media type does not support usage for tickets currently.'))
            if not mt.supports_giftcard and issue_giftcard:
                raise ValidationError(_('The selected media type does not support usage for gift cards currently.'))
+            if media_policy in (Item.MEDIA_POLICY_NEW, Item.MEDIA_POLICY_APPEND_OR_NEW, Item.MEDIA_POLICY_REUSE_OR_NEW):
+                if not mt.medium_created_by_server and not mt.medium_created_from_unknown_supported:
+                    raise ValidationError(_('The selected media type requires all media to be registered in the system '
+                                            'prior to their usage. Therefore, the selected media policy does not make '
+                                            'sense for this media type.'))
            if issue_giftcard:
                raise ValidationError(_('You currently cannot create gift cards with a reusable media policy. Instead, '
                                        'gift cards for some reusable media types can be created or re-charged directly '
@@ -1060,10 +1070,8 @@ class Item(LoggedModel):

                replace_year = valid_until.year
                replace_month = valid_until.month + self.validity_dynamic_duration_months
-
-                while replace_month > 12:
-                    replace_month -= 12
-                    replace_year += 1
+                replace_year += (replace_month - 1) // 12
+                replace_month = ((replace_month - 1) % 12) + 1
                max_day = calendar.monthrange(replace_year, replace_month)[1]
                replace_date = date(
                    year=replace_year,
@@ -2220,7 +2228,7 @@ class Quota(LoggedModel):
 class ItemMetaProperty(LoggedModel):
    """
    An event can have ItemMetaProperty objects attached to define meta information fields
-    for its items. This information can be re-used for example in ticket layouts.
+    for its items. This information can be reused for example in ticket layouts.

    :param event: The event this property is defined for.
    :type event: Event
@@ -72,6 +72,16 @@ class ReusableMedium(LoggedModel):
        max_length=200,
        verbose_name=pgettext_lazy('reusable_medium', 'Identifier'),
    )
+    claim_token = models.CharField(
+        max_length=200,
+        verbose_name=pgettext_lazy('reusable_medium', 'Claim token'),
+        null=True, blank=True
+    )
+    label = models.CharField(
+        max_length=200,
+        verbose_name=pgettext_lazy('reusable_medium', 'Label'),
+        null=True, blank=True
+    )

    active = models.BooleanField(
        verbose_name=_('Active'),
@@ -89,12 +99,14 @@ class ReusableMedium(LoggedModel):
        on_delete=models.SET_NULL,
        verbose_name=_('Customer account'),
    )
-    linked_orderposition = models.ForeignKey(
+    linked_orderpositions = models.ManyToManyField(
        OrderPosition,
-        null=True, blank=True,
        related_name='linked_media',
-        on_delete=models.SET_NULL,
-        verbose_name=_('Linked ticket'),
+        verbose_name=_('Linked tickets'),
+        help_text=_(
+            'If you link to more than one ticket, make sure there is no overlap in validity. '
+            'If multiple tickets are valid at once, this will lead to failed check-ins.'
+        )
    )
    linked_giftcard = models.ForeignKey(
        GiftCard,
@@ -117,7 +129,10 @@ class ReusableMedium(LoggedModel):

    @property
    def is_expired(self):
-        return self.expires and self.expires > now()
+        return self.expires and self.expires < now()
+
+    def touch(self):
+        self.save(update_fields=['updated'])

    class Meta:
        unique_together = (("identifier", "type", "organizer"),)
@@ -135,33 +135,7 @@ class OrderQuerySet(models.QuerySet):
        return order


-class SearchIndexModelMixin:
-    search_index_fields = []
-
-    def save(self, *args, **kwargs):
-        super().save(*args, **kwargs)
-        if "update_fields" in kwargs:
-            update_fields = kwargs["update_fields"]
-            if any(f in update_fields for f in self.search_index_fields):
-                self._update_search_index()
-        else:
-            self._update_search_index()
-
-    def get_search_index_content(self):
-        for f in self.search_index_fields:
-            val = getattr(self, f)
-            if val is not None:
-                yield str(val)
-
-    def _update_search_index(self):
-        from .search import OrderSearchIndex
-
-        contents = list(self.get_search_index_content())
-        print(self, contents)
-        OrderSearchIndex.update_for(self, contents)
-
-
-class Order(LockModel, SearchIndexModelMixin, LoggedModel):
+class Order(LockModel, LoggedModel):
    """
    An order is created when a user clicks 'buy' on his cart. It holds
    several OrderPositions and is connected to a user. It has an
@@ -356,12 +330,6 @@ class Order(LockModel, SearchIndexModelMixin, LoggedModel):
    )

    objects = ScopedManager(OrderQuerySet.as_manager().__class__, organizer='event__organizer')
-    search_index_fields = [
-        "code",
-        "comment",
-        "email",
-        "phone",
-    ]

    class Meta:
        verbose_name = _("Order")
@@ -383,45 +351,63 @@ class Order(LockModel, SearchIndexModelMixin, LoggedModel):
        if 'require_approval' not in self.get_deferred_fields() and 'status' not in self.get_deferred_fields():
            self._transaction_key_reset()

-    def get_search_index_content(self):
-        yield from super().get_search_index_content()
-        yield self.event.slug.upper() + "-" + self.code
-
    def _transaction_key_reset(self):
        self.__initial_status_paid_or_pending = self.status in (Order.STATUS_PENDING, Order.STATUS_PAID) and not self.require_approval

-    def gracefully_delete(self, user=None, auth=None):
-        from . import GiftCard, GiftCardTransaction, Membership, Voucher
-
-        if not self.testmode:
-            raise TypeError("Only test mode orders can be deleted.")
-        self.log_action(
-            'pretix.event.order.deleted', user=user, auth=auth,
-            data={
-                'code': self.code,
-            }
+    @classmethod
+    def gracefully_delete_bulk(cls, event, orders, user=None, auth=None):
+        # Expects to be called in a transaction
+        from . import (
+            GiftCard, GiftCardTransaction, LogEntry, Membership, Voucher,
        )

-        order_gracefully_delete.send(self.event, order=self)
+        if not transaction.get_connection().in_atomic_block:
+            raise Exception('gracefully_delete_bulk should only be called in atomic transaction!')

-        if self.status != Order.STATUS_CANCELED:
-            for position in self.positions.all():
-                if position.voucher:
-                    Voucher.objects.filter(pk=position.voucher.pk).update(redeemed=Greatest(0, F('redeemed') - 1))
+        logs_create = []
+        for o in orders:
+            if not o.testmode:
+                raise TypeError("Only test mode orders can be deleted.")
+            order_gracefully_delete.send(event, order=o)
+            logs_create.append(o.log_action(
+                'pretix.event.order.deleted', user=user, auth=auth,
+                data={
+                    'code': o.code,
+                },
+                save=False,
+            ))
+        LogEntry.bulk_create_and_postprocess(logs_create)

-        GiftCardTransaction.objects.filter(payment__in=self.payments.all()).update(payment=None)
-        GiftCardTransaction.objects.filter(refund__in=self.refunds.all()).update(refund=None)
-        GiftCardTransaction.objects.filter(order=self).update(order=None)
-        GiftCard.objects.filter(issued_in__in=self.positions.all()).update(issued_in=None)
-        Membership.objects.filter(granted_in__order=self, testmode=True).update(granted_in=None)
-        OrderPosition.all.filter(order=self, addon_to__isnull=False).delete()
-        OrderPosition.all.filter(order=self).delete()
-        OrderFee.all.filter(order=self).delete()
-        Transaction.objects.filter(order=self).delete()
-        self.refunds.all().delete()
-        self.payments.all().delete()
-        self.event.cache.delete('complain_testmode_orders')
-        self.delete()
+        voucher_ids = OrderPosition.objects.filter(
+            order__in=orders,
+            voucher__isnull=False
+        ).exclude(order__status=Order.STATUS_CANCELED).values_list("voucher_id", flat=True)
+        voucher_usages = Counter(voucher_ids)
+        for v_id, usage_count in voucher_usages.items():
+            Voucher.objects.filter(pk=v_id).update(redeemed=Greatest(0, F('redeemed') - usage_count))
+
+        GiftCardTransaction.objects.filter(payment__order__in=orders).update(payment=None)
+        GiftCardTransaction.objects.filter(refund__order__in=orders).update(refund=None)
+        GiftCardTransaction.objects.filter(order__in=orders).update(order=None)
+        GiftCard.objects.filter(issued_in__order__in=orders).update(issued_in=None)
+        Membership.objects.filter(granted_in__order__in=orders, testmode=True).update(granted_in=None)
+        OrderPosition.all.filter(order__in=orders, addon_to__isnull=False).delete()
+        OrderPosition.all.filter(order__in=orders).delete()
+        OrderFee.all.filter(order__in=orders).delete()
+        Transaction.objects.filter(order__in=orders).delete()
+        OrderRefund.objects.filter(order__in=orders).delete()
+        OrderPayment.objects.filter(order__in=orders).delete()
+        if isinstance(orders, models.QuerySet):
+            orders.delete()
+        else:
+            Order.objects.filter(pk__in=[o.pk for o in orders]).delete()
+        event.cache.delete('complain_testmode_orders')
+
+    def gracefully_delete(self, user=None, auth=None):
+        if not self.testmode:
+            raise TypeError("Only test mode orders can be deleted.")
+
+        Order.gracefully_delete_bulk(self.event, Order.objects.filter(pk=self.pk), user, auth)

    def email_confirm_secret(self):
        return self.tagged_secret("email_confirm", 9)
@@ -1711,7 +1697,7 @@ class AbstractPosition(RoundingCorrectionMixin, models.Model):
            self.company,
            self.street,
            (self.zipcode or '') + ' ' + (self.city or '') + ' ' + (self.state_for_address or ''),
-            self.country.name
+            self.country.name if self.country else ''
        ]
        lines = [r.strip() for r in lines if r]
        return '\n'.join(lines).strip()
@@ -1726,7 +1712,7 @@ class AbstractPosition(RoundingCorrectionMixin, models.Model):
        return False


-class OrderPayment(SearchIndexModelMixin, models.Model):
+class OrderPayment(models.Model):
    """
    Represents a payment or payment attempt for an order.

@@ -1810,9 +1796,6 @@ class OrderPayment(SearchIndexModelMixin, models.Model):
    )

    objects = ScopedManager(organizer='order__event__organizer')
-    search_index_fields = [
-        "info",  # only for triggering the right updates
-    ]

    class Meta:
        ordering = ('local_id',)
@@ -1820,14 +1803,6 @@ class OrderPayment(SearchIndexModelMixin, models.Model):
    def __str__(self):
        return self.full_id

-    def get_search_index_content(self):
-        try:
-            return [
-                self.payment_provider.matching_id(self)
-            ]
-        except:
-            pass
-
    @property
    def info_data(self):
        """
@@ -2140,7 +2115,7 @@ class OrderPayment(SearchIndexModelMixin, models.Model):
        return r


-class OrderRefund(SearchIndexModelMixin, models.Model):
+class OrderRefund(models.Model):
    """
    Represents a refund or refund attempt for an order.

@@ -2242,9 +2217,6 @@ class OrderRefund(SearchIndexModelMixin, models.Model):
    )

    objects = ScopedManager(organizer='order__event__organizer')
-    search_index_fields = [
-        "info",  # only for triggering the right updates
-    ]

    class Meta:
        ordering = ('local_id',)
@@ -2252,14 +2224,6 @@ class OrderRefund(SearchIndexModelMixin, models.Model):
    def __str__(self):
        return self.full_id

-    def get_search_index_content(self):
-        try:
-            return [
-                self.payment_provider.refund_matching_id(self)
-            ]
-        except:
-            pass
-
    @property
    def info_data(self):
        """
@@ -2530,7 +2494,7 @@ class OrderFee(RoundingCorrectionMixin, models.Model):
        self.value_includes_rounding_correction = value


-class OrderPosition(SearchIndexModelMixin, AbstractPosition):
+class OrderPosition(AbstractPosition):
    """
    An OrderPosition is one line of an order, representing one ordered item
    of a specified type (or variation). This has all properties of
@@ -2637,13 +2601,6 @@ class OrderPosition(SearchIndexModelMixin, AbstractPosition):

    all = ScopedManager(organizer='order__event__organizer')
    objects = ActivePositionManager()
-    search_index_fields = [
-        "attendee_name_cached",
-        "attendee_email",
-        "company",
-        "secret",
-        "pseudonymization_id",
-    ]

    def __init__(self, *args, **kwargs):
        super().__init__(*args, **kwargs)
@@ -3400,7 +3357,7 @@ class CartPosition(AbstractPosition):
        return self.predicted_validity[1]


-class InvoiceAddress(SearchIndexModelMixin, models.Model):
+class InvoiceAddress(models.Model):
    last_modified = models.DateTimeField(auto_now=True)
    order = models.OneToOneField(Order, null=True, blank=True, related_name='invoice_address', on_delete=models.CASCADE)
    customer = models.ForeignKey(
@@ -3438,10 +3395,6 @@ class InvoiceAddress(SearchIndexModelMixin, models.Model):

    objects = ScopedManager(organizer='order__event__organizer')
    profiles = ScopedManager(organizer='customer__organizer')
-    search_index_fields = [
-        "name_cached",
-        "company",
-    ]

    def save(self, **kwargs):
        if self.order:
@@ -3485,7 +3438,7 @@ class InvoiceAddress(SearchIndexModelMixin, models.Model):
            self.name,
            self.street,
            (self.zipcode or '') + ' ' + (self.city or '') + ' ' + (self.state_for_address or ''),
-            self.country.name,
+            self.country.name if self.country else '',
            self.vat_id,
            self.custom_field,
            self.internal_reference,
@@ -35,6 +35,7 @@ import operator
 import string
 from datetime import date, datetime, time
 from functools import reduce
+from typing import TYPE_CHECKING

 import pytz_deprecation_shim
 from django.conf import settings
@@ -61,6 +62,9 @@ from ...helpers.permission_migration import (
 from ..settings import settings_hierarkey
 from .auth import User

+if TYPE_CHECKING:
+    from hierarkey.proxy import HierarkeyProxy
+

@settings_hierarkey.add(cache_namespace='organizer')
 class Organizer(LoggedModel):
@@ -78,6 +82,9 @@ class Organizer(LoggedModel):
    """

    settings_namespace = 'organizer'
+    if TYPE_CHECKING:
+        settings: HierarkeyProxy
+
    name = models.CharField(max_length=200,
                            verbose_name=_("Name"))
    slug = models.CharField(
@@ -1,158 +0,0 @@
-#
-# 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 typing import List, Union
-
-from django.contrib.postgres.indexes import GinIndex
-from django.contrib.postgres.search import (
-    SearchQuery, SearchVector, SearchVectorField,
-)
-from django.db import models
-from django.db.models import Value
-from django_scopes.manager import ScopedManager
-
-from pretix.base.models import (
-    Event, Invoice, InvoiceAddress, Order, OrderPayment, OrderPosition,
-    OrderRefund, Organizer,
-)
-
-
-class SearchIndexQuerySet(models.QuerySet):
-    def search_for(self, query: str):
-        sq = SearchQuery(query, config="pretix_search", search_type="raw")  # todo: probably use plain
-        if query.count(" ") < 1 and "@" not in query:
-            # Order code normalization, only apply for one-word search that is not an email address
-            sq |= SearchQuery(Order.normalize_code(query.rsplit("-", 1)[-1]), config="pretix_search", search_type="plain")
-
-            if query.isdigit():
-                for i in range(2, 12):
-                    sq |= SearchQuery(query.zfill(i), config="pretix_search", search_type="plain")
-
-        return self.filter(search_vector=sq)
-
-
-class OrderSearchIndex(models.Model):
-    organizer = models.ForeignKey(Organizer, on_delete=models.CASCADE)
-    event = models.ForeignKey(Event, on_delete=models.CASCADE)
-    order = models.ForeignKey(Order, on_delete=models.CASCADE)
-    orderposition = models.OneToOneField(
-        OrderPosition,
-        on_delete=models.CASCADE,
-        related_name="search_index",
-        null=True,
-        blank=True,
-    )
-    orderpayment = models.OneToOneField(
-        OrderPayment,
-        on_delete=models.CASCADE,
-        related_name="search_index",
-        null=True,
-        blank=True,
-    )
-    orderrefund = models.OneToOneField(
-        OrderRefund,
-        on_delete=models.CASCADE,
-        related_name="search_index",
-        null=True,
-        blank=True,
-    )
-    invoiceaddress = models.OneToOneField(
-        InvoiceAddress,
-        on_delete=models.CASCADE,
-        related_name="search_index",
-        null=True,
-        blank=True,
-    )
-    invoice = models.OneToOneField(
-        Invoice,
-        on_delete=models.CASCADE,
-        related_name="search_index",
-        null=True,
-        blank=True,
-    )
-    last_modified = models.DateTimeField(auto_now=True)
-    search_vector = SearchVectorField()
-
-    objects = ScopedManager(SearchIndexQuerySet.as_manager().__class__, organizer='organizer')
-
-    class Meta:
-        constraints = [
-            models.UniqueConstraint(
-                condition=models.Q(
-                    orderposition__isnull=True,
-                    orderpayment__isnull=True,
-                    orderrefund__isnull=True,
-                    invoiceaddress__isnull=True,
-                    invoice__isnull=True,
-                ),
-                fields=("order",),
-                name="ordersearchindex_one_per_order",
-            ),
-        ]
-        indexes = [
-            GinIndex("search_vector", name="ordersearchindex_vector"),
-        ]
-
-    def save(self, *args, **kwargs):
-        fields_filled = [
-            bool(self.orderposition_id),
-            bool(self.orderpayment_id),
-            bool(self.orderrefund_id),
-            bool(self.invoiceaddress_id),
-            bool(self.invoice_id),
-        ]
-        if fields_filled.count(True) > 1:
-            raise ValueError("A OrderSearchIndex may one relate to one other instance")
-        super().save(*args, **kwargs)
-
-    @classmethod
-    def update_for(cls, obj: Union[Order, OrderPayment, OrderPosition, OrderRefund], inputs: List[str]):
-        index_text = "\n".join([i for i in inputs if i])
-        if isinstance(obj, Order):
-            order = obj
-        else:
-            order = obj.order
-
-        kwargs = dict(
-            order=order,
-            orderpayment=obj if isinstance(obj, OrderPayment) else None,
-            orderrefund=obj if isinstance(obj, OrderRefund) else None,
-            orderposition=obj if isinstance(obj, OrderPosition) else None,
-            invoiceaddress=obj if isinstance(obj, InvoiceAddress) else None,
-            invoice=obj if isinstance(obj, Invoice) else None,
-        )
-
-        if not index_text.strip():
-            OrderSearchIndex.objects.filter(**kwargs).delete()
-        else:
-            OrderSearchIndex.objects.update_or_create(
-                **kwargs,
-                defaults=dict(
-                    search_vector=SearchVector(
-                        Value(index_text),
-                        config="pretix_search"
-                    ),
-                ),
-                create_defaults=dict(
-                    event_id=order.event_id,
-                    organizer_id=order.organizer_id,
-                ),
-            )
@@ -118,7 +118,10 @@ class SeatingPlan(LoggedModel):
        for zi, z in enumerate(self.layout_data['zones']):
            zpos = (z['position']['x'], z['position']['y'])
            for ri, r in enumerate(z['rows']):
-                rpos = (zpos[0] + r['position']['x'], zpos[1] + r['position']['y'])
+                rpos = (
+                    zpos[0] + r.get('position', {}).get('x', 0),
+                    zpos[1] + r.get('position', {}).get('y', 0),
+                )
                row_label = None
                if r.get('row_label'):
                    row_label = r['row_label'].replace("%s", r.get('row_number', str(ri)))
@@ -147,8 +150,8 @@ class SeatingPlan(LoggedModel):
                        zone=z['name'],
                        category=s['category'],
                        sorting_rank=rank,
-                        x=rpos[0] + s['position']['x'],
-                        y=rpos[1] + s['position']['y'],
+                        x=rpos[0] + s.get('position', {}).get('x', 0),
+                        y=rpos[1] + s.get('position', {}).get('y', 0),
                    )


@@ -43,7 +43,7 @@ from django.utils.translation import gettext_lazy as _, pgettext_lazy
 from pretix.base.models import Event, LogEntry
 from pretix.base.signals import register_notification_types
 from pretix.base.templatetags.money import money_filter
-from pretix.helpers.urls import build_absolute_uri
+from pretix.helpers.urls import mainreverse_absolute

 logger = logging.getLogger(__name__)
 _ALL_TYPES = None
@@ -170,7 +170,7 @@ class ParametrizedOrderNotificationType(NotificationType):
    def build_notification(self, logentry: LogEntry):
        order = logentry.content_object

-        order_url = build_absolute_uri(
+        order_url = mainreverse_absolute(
            'control:event.order',
            kwargs={
                'organizer': logentry.event.organizer.slug,
@@ -71,7 +71,7 @@ from pretix.helpers import OF_SELF
 from pretix.helpers.countries import CachedCountries
 from pretix.helpers.format import format_map
 from pretix.helpers.money import DecimalTextInput
-from pretix.multidomain.urlreverse import build_absolute_uri
+from pretix.multidomain.urlreverse import eventreverse_absolute
 from pretix.presale.views import get_cart
 from pretix.presale.views.cart import cart_session, get_or_create_cart_id

@@ -379,7 +379,7 @@ class BasePaymentProvider:

        if not self.settings.get('_hidden_seed'):
            self.settings.set('_hidden_seed', get_random_string(64))
-        hidden_url = build_absolute_uri(self.event, 'presale:event.payment.unlock', kwargs={
+        hidden_url = eventreverse_absolute(self.event, 'presale:event.payment.unlock', kwargs={
            'hash': hashlib.sha256((self.settings._hidden_seed + self.event.slug).encode()).hexdigest(),
        })

@@ -372,6 +372,11 @@ DEFAULT_VARIABLES = OrderedDict((
        "editor_sample": _("Atlantis"),
        "evaluate": lambda op, order, ev: str(getattr(order.invoice_address.country, 'name', '')) if getattr(order, 'invoice_address', None) else ''
    }),
+    ("invoice_custom_field", {
+        "label": _("Invoice custom recipient field"),
+        "editor_sample": _("Custom recipient field"),
+        "evaluate": lambda op, order, ev: order.invoice_address.custom_field if getattr(order, 'invoice_address', None) else ''
+    }),
    ("addons", {
        "label": _("List of Add-Ons"),
        "editor_sample": _("Add-on 1\n2x Add-on 2"),
@@ -1062,14 +1067,14 @@ class Renderer:
        except:
            logger.exception('Reshaping/Bidi fixes failed on string {}'.format(repr(text)))

-        p = Paragraph(text, style=style)
+        p = Paragraph(text, style=style)  # not using AutoEscapeParagraph is safe as we escape above
        return p, ad, lineheight

    def _draw_textcontainer(self, canvas: Canvas, op: OrderPosition, order: Order, o: dict):
        fontsize = float(o['fontsize'])
        height = float(o['height']) * mm
        width = float(o['width']) * mm
-        while True:
+        for _i in range(25):  # try adapting the font size at most 25 times
            p, ad, lineheight = self._text_paragraph(op, order, o, override_fontsize=fontsize)
            w, h = p.wrapOn(canvas, width, 1000 * mm)
            widths = p.getActualLineWidths0()
@@ -287,11 +287,11 @@ def _check_position_constraints(
        raise CartPositionError(error_messages['unavailable'])

    # Invalid media policy for online sale
-    if item.media_policy in (Item.MEDIA_POLICY_NEW, Item.MEDIA_POLICY_REUSE_OR_NEW):
+    if item.media_policy in (Item.MEDIA_POLICY_NEW, Item.MEDIA_POLICY_REUSE_OR_NEW, Item.MEDIA_POLICY_APPEND_OR_NEW, Item.MEDIA_POLICY_REUSE_OR_NEW):
        mt = MEDIA_TYPES[item.media_type]
        if not mt.medium_created_by_server:
            raise CartPositionError(error_messages['media_usage_not_implemented'])
-    elif item.media_policy == Item.MEDIA_POLICY_REUSE:
+    elif item.media_policy in (Item.MEDIA_POLICY_REUSE, Item.MEDIA_POLICY_APPEND):
        raise CartPositionError(error_messages['media_usage_not_implemented'])

    # Item removed from sales channel
@@ -867,6 +867,15 @@ class RequiredQuestionsError(Exception):
        super().__init__(msg)


+class RequiredMediaExchangeError(Exception):
+    def __init__(self, msg, code, media_policy, media_type):
+        self.msg = msg
+        self.code = code
+        self.media_policy = media_policy
+        self.media_type = media_type
+        super().__init__(msg)
+
+
 def _save_answers(op, answers, given_answers):
    def _create_answer(question, answer):
        try:
@@ -939,7 +948,7 @@ def perform_checkin(op: OrderPosition, clist: CheckinList, given_answers: dict,
                    ignore_unpaid=False, nonce=None, datetime=None, questions_supported=True,
                    user=None, auth=None, canceled_supported=False, type=Checkin.TYPE_ENTRY,
                    raw_barcode=None, raw_source_type=None, from_revoked_secret=False, simulate=False,
-                    gate=None):
+                    gate=None, reusable_medium=None):
    """
    Create a checkin for this particular order position and check-in list. Fails with CheckInError if the check in is
    not valid at this time.
@@ -955,6 +964,7 @@ def perform_checkin(op: OrderPosition, clist: CheckinList, given_answers: dict,
    :param datetime: The datetime of the checkin, defaults to now.
    :param simulate: If true, the check-in is not saved.
    :param gate: The gate the check-in was performed at.
+    :param reusable_medium: The medium that is available for an exchange
    """

    # !!!!!!!!!
@@ -1035,7 +1045,7 @@ def perform_checkin(op: OrderPosition, clist: CheckinList, given_answers: dict,

    with transaction.atomic():
        # Lock order positions, if it is an entry. We don't need it for exits, as a race condition wouldn't be problematic
-        opqs = OrderPosition.all
+        opqs = OrderPosition.all.select_related("order", "item")
        if type != Checkin.TYPE_EXIT:
            opqs = opqs.select_for_update(of=OF_SELF)
        op = opqs.get(pk=op.pk)
@@ -1101,6 +1111,24 @@ def perform_checkin(op: OrderPosition, clist: CheckinList, given_answers: dict,
                require_answers
            )

+        required_media_policy = op.item.media_policy
+        required_media_type = op.item.media_type
+        require_a_medium = required_media_policy and required_media_type
+        linked_media = op.linked_media
+        if require_a_medium and not reusable_medium and not force:
+            if not linked_media.exists():
+                raise RequiredMediaExchangeError(
+                    _('Ticket needs to be exchanged to a suitable medium.'),
+                    'exchange',
+                    required_media_policy,
+                    required_media_type
+                )
+            elif op.organizer.settings.reusable_media_usage_enforced:
+                raise CheckInError(
+                    _('This ticket has already been exchanged for a reusable medium that now needs to be used instead.'),
+                    'already_exchanged',
+                )
+
        device = None
        if isinstance(auth, Device):
            device = auth
@@ -51,7 +51,7 @@ from pretix.base.signals import (
 )
 from pretix.celery_app import app
 from pretix.helpers import OF_SELF, repeatable_reads_transaction
-from pretix.helpers.urls import build_absolute_uri
+from pretix.helpers.urls import mainreverse_absolute

 logger = logging.getLogger(__name__)

@@ -455,7 +455,7 @@ def scheduled_organizer_export(self, organizer: Organizer, schedule: int) -> Non
        schedule,
        organizer,
        exporter,
-        build_absolute_uri(
+        mainreverse_absolute(
            'control:organizer.export',
            kwargs={
                'organizer': organizer.slug,
@@ -481,7 +481,7 @@ def scheduled_event_export(self, event: Event, schedule: int) -> None:
        schedule,
        event,
        exporter,
-        build_absolute_uri(
+        mainreverse_absolute(
            'control:event.orders.export',
            kwargs={
                'event': event.slug,
@@ -85,7 +85,7 @@ from pretix.helpers.format import (
    FormattedString, PlainHtmlAlternativeString, SafeFormatter, format_map,
 )
 from pretix.helpers.hierarkey import clean_filename
-from pretix.multidomain.urlreverse import build_absolute_uri
+from pretix.multidomain.urlreverse import eventreverse_absolute
 from pretix.presale.ical import get_private_icals

 logger = logging.getLogger('pretix.base.mail')
@@ -997,7 +997,7 @@ def _wrap_plain_body(content_plain, signature, event, order, position, no_order_
        body_plain += _(
            "You can view your order details at the following URL:\n{orderurl}."
        ).replace("\n", "\r\n").format(
-            orderurl=build_absolute_uri(
+            orderurl=eventreverse_absolute(
                order.event, 'presale:event.order.position', kwargs={
                    'order': order.code,
                    'secret': position.web_secret,
@@ -1013,7 +1013,7 @@ def _wrap_plain_body(content_plain, signature, event, order, position, no_order_
        body_plain += _(
            "You can view your order details at the following URL:\n{orderurl}."
        ).replace("\n", "\r\n").format(
-            event=event.name, orderurl=build_absolute_uri(
+            event=event.name, orderurl=eventreverse_absolute(
                order.event, 'presale:event.order.open', kwargs={
                    'order': order.code,
                    'secret': order.secret,
@@ -23,10 +23,13 @@ import secrets

 from django.db import IntegrityError
 from django.db.models import Q
+from django.utils.translation import gettext as _
 from django_scopes import scopes_disabled

-from pretix.base.models import GiftCardAcceptance
-from pretix.base.models.media import MediumKeySet
+from pretix.base.media import MEDIA_TYPES
+from pretix.base.models import Checkin, GiftCardAcceptance, Item
+from pretix.base.models.media import MediumKeySet, ReusableMedium
+from pretix.base.services.checkin import CheckInError


 def create_nfc_mf0aes_keyset(organizer):
@@ -70,3 +73,174 @@ def get_keysets_for_organizer(organizer):
        if new_set:
            sets.append(new_set)
    return sets
+
+
+def perform_media_exchange(organizer, media_type, identifier, link_orderposition, user, auth):
+    """
+    Create or retrieve a medium, then link the order position to it. Expected to be called in a transaction.
+
+    :param organizer: Organizer to operate in
+    :param media_type: Type of medium to operate with
+    :param identifier: Identifier of the medium
+    :param link_orderposition: Position to link to the medium
+    :return: ReusableMedium
+    """
+    medium = None
+    media_policy = link_orderposition.item.media_policy
+
+    if media_type not in MEDIA_TYPES:  # should be caught by serializer already
+        raise CheckInError(
+            _('Invalid medium type.'),
+            Checkin.REASON_ERROR,
+            reason=_('Invalid medium type.'),
+        )
+
+    if not MEDIA_TYPES[media_type].is_active(organizer):
+        raise CheckInError(
+            _('Medium type is not enabled for organizer.'),
+            Checkin.REASON_ERROR,
+            reason=_('Medium type is not enabled for organizer.'),
+        )
+
+    if link_orderposition.item.media_type != media_type:
+        raise CheckInError(
+            _('Incorrect medium type for product.'),
+            Checkin.REASON_PRODUCT,
+            reason=_('Incorrect medium type for product.'),
+        )
+
+    if link_orderposition.linked_media.exists():
+        raise CheckInError(
+            _('Ticket is already exchanged for reusable medium.'),
+            Checkin.REASON_ALREADY_EXCHANGED,
+            reason=_('Ticket is already exchanged for reusable medium.'),
+        )
+
+    if media_policy in (Item.MEDIA_POLICY_APPEND, Item.MEDIA_POLICY_APPEND_OR_NEW, Item.MEDIA_POLICY_NEW):
+        link_action = "append"
+    else:
+        link_action = "replace"
+
+    if media_policy in (Item.MEDIA_POLICY_REUSE, Item.MEDIA_POLICY_APPEND):
+        try:
+            medium = ReusableMedium.objects.get(
+                type=media_type,
+                identifier=identifier,
+                organizer=organizer,
+            )
+        except ReusableMedium.DoesNotExist:
+            raise CheckInError(
+                _('Reusable medium not found.'),
+                Checkin.REASON_MEDIUM_INVALID,
+                reason=_('Reusable medium not found.'),
+            )
+        else:
+            if medium.is_expired or not medium.active:
+                raise CheckInError(
+                    _('Reusable medium is inactive or expired.'),
+                    Checkin.REASON_MEDIUM_INVALID,
+                    reason=_('Reusable medium is inactive or expired.'),
+                )
+
+    elif media_policy in (Item.MEDIA_POLICY_REUSE_OR_NEW, Item.MEDIA_POLICY_APPEND_OR_NEW):
+        try:
+            medium = ReusableMedium.objects.get(
+                type=media_type,
+                identifier=identifier,
+                organizer=organizer,
+            )
+        except ReusableMedium.DoesNotExist:
+            if not MEDIA_TYPES[media_type].medium_created_from_unknown_supported:
+                raise CheckInError(
+                    _('Reusable medium not found and could not be created.'),
+                    Checkin.REASON_MEDIUM_INVALID,
+                )
+
+            medium = MEDIA_TYPES[media_type].handle_unknown(organizer, identifier, user, auth, force_create=True)
+            if not medium:
+                raise CheckInError(
+                    _('Reusable medium not found and could not be created.'),
+                    Checkin.REASON_MEDIUM_INVALID,
+                )
+
+        if medium.is_expired or not medium.active:
+            raise CheckInError(
+                _('Reusable medium is inactive or expired.'),
+                Checkin.REASON_MEDIUM_INVALID,
+                reason=_('Reusable medium is inactive or expired.'),
+            )
+
+    elif media_policy == Item.MEDIA_POLICY_NEW:
+        if not MEDIA_TYPES[media_type].medium_created_from_unknown_supported:
+            raise CheckInError(
+                _('Reusable medium not found and could not be created.'),
+                Checkin.REASON_MEDIUM_INVALID,
+            )
+        try:
+            medium = MEDIA_TYPES[media_type].handle_unknown(organizer, identifier, user, auth, force_create=True)
+        except IntegrityError:
+            raise CheckInError(
+                _('Reusable medium already exists.'),
+                Checkin.REASON_MEDIUM_EXISTS,
+            )
+        else:
+            if not medium:
+                raise CheckInError(
+                    _('Reusable medium could not be created.'),
+                    Checkin.REASON_MEDIUM_INVALID,
+                )
+
+    else:
+        raise CheckInError(
+            _('Product does not support medium exchange.'),
+            Checkin.REASON_PRODUCT,
+            reason=_('Product does not support medium exchange.'),
+        )
+
+    if link_action == 'append':
+        medium.linked_orderpositions.add(link_orderposition)
+        medium.log_action(
+            'pretix.reusable_medium.linked_orderposition.added',
+            user=user,
+            auth=auth,
+            data={
+                'linked_orderposition': link_orderposition,
+            }
+        )
+    elif link_action == 'replace':
+        already_found = False
+        for op_pk in medium.linked_orderpositions.values_list('pk', flat=True):
+            if op_pk == link_orderposition.pk:
+                already_found = True
+                continue
+            else:
+                medium.log_action(
+                    'pretix.reusable_medium.linked_orderposition.removed',
+                    data={
+                        'linked_orderposition': op_pk,
+                    }
+                )
+        if not already_found:
+            medium.linked_orderpositions.set([link_orderposition])
+            medium.log_action(
+                'pretix.reusable_medium.linked_orderposition.added',
+                user=user,
+                auth=auth,
+                data={
+                    'linked_orderposition': link_orderposition,
+                }
+            )
+
+    link_orderposition.order.log_action(
+        'pretix.reusable_medium.exchanged',
+        data={
+            'position': link_orderposition.pk,
+            'positionid': link_orderposition.positionid,
+            'medium': medium.pk,
+            'medium_identifier': medium.identifier,
+            'medium_type': medium.media_type.identifier,
+        }
+    )
+    medium.touch()
+
+    return medium
@@ -26,8 +26,9 @@ from typing import List
 from django.conf import settings as django_settings
 from django.core.exceptions import ValidationError
 from django.db import transaction
+from django.db.utils import IntegrityError
 from django.utils.timezone import now
-from django.utils.translation import gettext as _
+from django.utils.translation import gettext as _, ngettext

 from pretix.base.i18n import language
 from pretix.base.modelimport import DataImportError, ImportColumn, parse_csv
@@ -260,6 +261,7 @@ def import_vouchers(event: Event, fileid: str, settings: dict, locale: str, user
        # Prepare model objects. Yes, this might consume lots of RAM, but allows us to make the actual SQL transaction
        # shorter. We'll see what works better in reality…
        vouchers = []
+        codes = set()
        lock_seats = []
        for i, record in enumerate(data):
            try:
@@ -268,6 +270,14 @@ def import_vouchers(event: Event, fileid: str, settings: dict, locale: str, user

                if not record.get("code"):
                    raise ValidationError(_('A voucher cannot be created without a code.'))
+                code = record.get("code")
+                if code.upper() in codes:
+                    raise ValidationError(
+                        _('Voucher codes must be unique. Code "{code}" already exists in this import.').format(
+                            code=code,
+                        )
+                    )
+                codes.add(code.upper())
                Voucher.clean_item_properties(
                    record,
                    event,
@@ -286,8 +296,22 @@ def import_vouchers(event: Event, fileid: str, settings: dict, locale: str, user
                    lock_seats.append(voucher.seat)
            except (ValidationError, ImportError) as e:
                raise DataImportError(
-                    _('Invalid data in row {row}: {message}').format(row=i, message=str(e))
+                    _('Invalid data in row {row}: {message}').format(row=i + 1, message=str(e))
                )
+        existing_codes = Voucher.objects.filter(
+            event=event,
+            code__in=codes,
+        ).values_list("code", flat=True)
+        if len(existing_codes):
+            raise DataImportError(
+                ngettext(
+                    'Voucher codes must be unique. Import contains existing voucher code {code}.',
+                    'Voucher codes must be unique. Import contains existing voucher codes {code}.',
+                    len(existing_codes)
+                ).format(
+                    code=", ".join(existing_codes)
+                )
+            )

        with transaction.atomic():
            # We don't support quotas here, so we only need to lock if seats are in use
@@ -300,7 +324,13 @@ def import_vouchers(event: Event, fileid: str, settings: dict, locale: str, user

            save_logentries = []
            for v in vouchers:
-                v.save()
+                try:
+                    v.save()
+                except IntegrityError:
+                    # should not happen as we check existing codes before, but we did not lock so we might have a race-condition
+                    raise DataImportError(
+                        _('Vouchers could not be imported, probably due to a voucher code already being in use.')
+                    )
                save_logentries.append(v.log_action(
                    'pretix.voucher.added',
                    user=user,
@@ -37,7 +37,7 @@ from pretix.base.services.tasks import ProfiledTask, TransactionAwareTask
 from pretix.base.signals import notification
 from pretix.celery_app import app
 from pretix.helpers.celery import get_task_priority
-from pretix.helpers.urls import build_absolute_uri
+from pretix.helpers.urls import mainreverse_absolute


@app.task(base=TransactionAwareTask, acks_late=True, max_retries=9, default_retry_delay=900)
@@ -136,10 +136,10 @@ def send_notification_mail(notification: Notification, user: User):
        'site_url': settings.SITE_URL,
        'color': settings.PRETIX_PRIMARY_COLOR,
        'notification': notification,
-        'settings_url': build_absolute_uri(
+        'settings_url': mainreverse_absolute(
            'control:user.settings.notifications',
        ),
-        'disable_url': build_absolute_uri(
+        'disable_url': mainreverse_absolute(
            'control:user.settings.notifications.off',
            kwargs={
                'token': user.notifications_token,
@@ -3506,7 +3506,7 @@ def signal_listener_issue_media(sender: Event, order: Order, **kwargs):
    from pretix.base.models import ReusableMedium

    for p in order.positions.all():
-        if p.item.media_policy in (Item.MEDIA_POLICY_NEW, Item.MEDIA_POLICY_REUSE_OR_NEW):
+        if p.item.media_policy in (Item.MEDIA_POLICY_NEW, Item.MEDIA_POLICY_REUSE_OR_NEW, Item.MEDIA_POLICY_APPEND_OR_NEW):
            mt = MEDIA_TYPES[p.item.media_type]
            if mt.medium_created_by_server and not p.linked_media.exists():
                rm = ReusableMedium.objects.create(
@@ -3515,8 +3515,8 @@ def signal_listener_issue_media(sender: Event, order: Order, **kwargs):
                    identifier=mt.generate_identifier(sender.organizer),
                    active=True,
                    customer=order.customer,
-                    linked_orderposition=p,
                )
+                rm.linked_orderpositions.add(p)
                rm.log_action(
                    'pretix.reusable_medium.created',
                    data={
@@ -327,7 +327,7 @@ def get_best_name(position_or_address, parts=False):

@receiver(register_text_placeholders, dispatch_uid="pretixbase_register_text_placeholders")
 def base_placeholders(sender, **kwargs):
-    from pretix.multidomain.urlreverse import build_absolute_uri
+    from pretix.multidomain.urlreverse import eventreverse_absolute

    def _event_sample(event):
        if event.has_subevents:
@@ -388,14 +388,14 @@ def base_placeholders(sender, **kwargs):
            lambda event: LazyDate(now() + timedelta(days=15))
        ),
        SimpleFunctionalTextPlaceholder(
-            'url', ['order', 'event'], lambda order, event: build_absolute_uri(
+            'url', ['order', 'event'], lambda order, event: eventreverse_absolute(
                event,
                'presale:event.order.open', kwargs={
                    'order': order.code,
                    'secret': order.secret,
                    'hash': order.email_confirm_secret()
                }
-            ), lambda event: build_absolute_uri(
+            ), lambda event: eventreverse_absolute(
                event,
                'presale:event.order.open', kwargs={
                    'order': 'F8VVL',
@@ -406,7 +406,7 @@ def base_placeholders(sender, **kwargs):
        ),
        SimpleButtonPlaceholder(
            'url_button', ['order', 'event'],
-            url_func=lambda order, event: build_absolute_uri(
+            url_func=lambda order, event: eventreverse_absolute(
                event,
                'presale:event.order.open', kwargs={
                    'order': order.code,
@@ -415,7 +415,7 @@ def base_placeholders(sender, **kwargs):
                }
            ),
            text_func=lambda order, event: _("View order details"),
-            sample_url_func=lambda event: build_absolute_uri(
+            sample_url_func=lambda event: eventreverse_absolute(
                event,
                'presale:event.order.open', kwargs={
                    'order': 'F8VVL',
@@ -426,13 +426,13 @@ def base_placeholders(sender, **kwargs):
            sample_text_func=lambda event: _("View order details"),
        ),
        SimpleFunctionalTextPlaceholder(
-            'url_info_change', ['order', 'event'], lambda order, event: build_absolute_uri(
+            'url_info_change', ['order', 'event'], lambda order, event: eventreverse_absolute(
                event,
                'presale:event.order.modify', kwargs={
                    'order': order.code,
                    'secret': order.secret,
                }
-            ), lambda event: build_absolute_uri(
+            ), lambda event: eventreverse_absolute(
                event,
                'presale:event.order.modify', kwargs={
                    'order': 'F8VVL',
@@ -441,13 +441,13 @@ def base_placeholders(sender, **kwargs):
            ),
        ),
        SimpleFunctionalTextPlaceholder(
-            'url_products_change', ['order', 'event'], lambda order, event: build_absolute_uri(
+            'url_products_change', ['order', 'event'], lambda order, event: eventreverse_absolute(
                event,
                'presale:event.order.change', kwargs={
                    'order': order.code,
                    'secret': order.secret,
                }
-            ), lambda event: build_absolute_uri(
+            ), lambda event: eventreverse_absolute(
                event,
                'presale:event.order.change', kwargs={
                    'order': 'F8VVL',
@@ -456,13 +456,13 @@ def base_placeholders(sender, **kwargs):
            ),
        ),
        SimpleFunctionalTextPlaceholder(
-            'url_cancel', ['order', 'event'], lambda order, event: build_absolute_uri(
+            'url_cancel', ['order', 'event'], lambda order, event: eventreverse_absolute(
                event,
                'presale:event.order.cancel', kwargs={
                    'order': order.code,
                    'secret': order.secret,
                }
-            ), lambda event: build_absolute_uri(
+            ), lambda event: eventreverse_absolute(
                event,
                'presale:event.order.cancel', kwargs={
                    'order': 'F8VVL',
@@ -471,7 +471,7 @@ def base_placeholders(sender, **kwargs):
            ),
        ),
        SimpleFunctionalTextPlaceholder(
-            'url', ['event', 'position'], lambda event, position: build_absolute_uri(
+            'url', ['event', 'position'], lambda event, position: eventreverse_absolute(
                event,
                'presale:event.order.position',
                kwargs={
@@ -480,7 +480,7 @@ def base_placeholders(sender, **kwargs):
                    'position': position.positionid
                }
            ),
-            lambda event: build_absolute_uri(
+            lambda event: eventreverse_absolute(
                event,
                'presale:event.order.position', kwargs={
                    'order': 'F8VVL',
@@ -491,7 +491,7 @@ def base_placeholders(sender, **kwargs):
        ),
        SimpleButtonPlaceholder(
            'url_button', ['event', 'position'],
-            url_func=lambda event, position: build_absolute_uri(
+            url_func=lambda event, position: eventreverse_absolute(
                event,
                'presale:event.order.position', kwargs={
                    'order': position.order.code,
@@ -500,7 +500,7 @@ def base_placeholders(sender, **kwargs):
                }
            ),
            text_func=lambda event, position: _("View registration details"),
-            sample_url_func=lambda event: build_absolute_uri(
+            sample_url_func=lambda event: eventreverse_absolute(
                event,
                'presale:event.order.position', kwargs={
                    'order': 'F8VVL',
@@ -511,14 +511,14 @@ def base_placeholders(sender, **kwargs):
            sample_text_func=lambda event: _("View registration details"),
        ),
        SimpleFunctionalTextPlaceholder(
-            'url_info_change', ['position', 'event'], lambda position, event: build_absolute_uri(
+            'url_info_change', ['position', 'event'], lambda position, event: eventreverse_absolute(
                event,
                'presale:event.order.position.modify', kwargs={
                    'order': position.order.code,
                    'secret': position.web_secret,
                    'position': position.positionid
                }
-            ), lambda event: build_absolute_uri(
+            ), lambda event: eventreverse_absolute(
                event,
                'presale:event.order.position.modify', kwargs={
                    'order': 'F8VVL',
@@ -528,14 +528,14 @@ def base_placeholders(sender, **kwargs):
            ),
        ),
        SimpleFunctionalTextPlaceholder(
-            'url_products_change', ['position', 'event'], lambda position, event: build_absolute_uri(
+            'url_products_change', ['position', 'event'], lambda position, event: eventreverse_absolute(
                event,
                'presale:event.order.position.change', kwargs={
                    'order': position.order.code,
                    'secret': position.web_secret,
                    'position': position.positionid
                }
-            ), lambda event: build_absolute_uri(
+            ), lambda event: eventreverse_absolute(
                event,
                'presale:event.order.position.change', kwargs={
                    'order': 'F8VVL',
@@ -581,20 +581,20 @@ def base_placeholders(sender, **kwargs):
        ),
        SimpleFunctionalTextPlaceholder(
            'url_remove', ['waiting_list_voucher', 'event'],
-            lambda waiting_list_voucher, event: build_absolute_uri(
+            lambda waiting_list_voucher, event: eventreverse_absolute(
                event, 'presale:event.waitinglist.remove'
            ) + '?voucher=' + waiting_list_voucher.code,
-            lambda event: build_absolute_uri(
+            lambda event: eventreverse_absolute(
                event,
                'presale:event.waitinglist.remove',
            ) + '?voucher=68CYU2H6ZTP3WLK5',
        ),
        SimpleFunctionalTextPlaceholder(
            'url', ['waiting_list_voucher', 'event'],
-            lambda waiting_list_voucher, event: build_absolute_uri(
+            lambda waiting_list_voucher, event: eventreverse_absolute(
                event, 'presale:event.redeem'
            ) + '?voucher=' + waiting_list_voucher.code,
-            lambda event: build_absolute_uri(
+            lambda event: eventreverse_absolute(
                event,
                'presale:event.redeem',
            ) + '?voucher=68CYU2H6ZTP3WLK5',
@@ -611,7 +611,7 @@ def base_placeholders(sender, **kwargs):
            'orders', ['event', 'orders'], lambda event, orders: '\n' + '\n\n'.join(
                '* {} - {}'.format(
                    order.full_code,
-                    build_absolute_uri(event, 'presale:event.order.open', kwargs={
+                    eventreverse_absolute(event, 'presale:event.order.open', kwargs={
                        'event': event.slug,
                        'organizer': event.organizer.slug,
                        'order': order.code,
@@ -623,7 +623,7 @@ def base_placeholders(sender, **kwargs):
            ), lambda event: '\n' + '\n\n'.join(
                '* {} - {}'.format(
                    '{}-{}'.format(event.slug.upper(), order['code']),
-                    build_absolute_uri(event, 'presale:event.order.open', kwargs={
+                    eventreverse_absolute(event, 'presale:event.order.open', kwargs={
                        'event': event.slug,
                        'organizer': event.organizer.slug,
                        'order': order['code'],
@@ -662,13 +662,13 @@ def base_placeholders(sender, **kwargs):
            # join vouchers with two spaces at end of line so markdown-parser inserts a <br>
            'voucher_url_list', ['event', 'voucher_list'],
            lambda event, voucher_list: '  \n'.join([
-                build_absolute_uri(
+                eventreverse_absolute(
                    event, 'presale:event.redeem'
                ) + '?voucher=' + c
                for c in voucher_list
            ]),
            lambda event: '  \n'.join([
-                build_absolute_uri(
+                eventreverse_absolute(
                    event, 'presale:event.redeem'
                ) + '?voucher=' + c
                for c in ['68CYU2H6ZTP3WLK5', '7MB94KKPVEPSMVF2']
@@ -676,10 +676,10 @@ def base_placeholders(sender, **kwargs):
            inline=False,
        ),
        SimpleFunctionalTextPlaceholder(
-            'url', ['event', 'voucher_list'], lambda event, voucher_list: build_absolute_uri(event, 'presale:event.index', kwargs={
+            'url', ['event', 'voucher_list'], lambda event, voucher_list: eventreverse_absolute(event, 'presale:event.index', kwargs={
                'event': event.slug,
                'organizer': event.organizer.slug,
-            }), lambda event: build_absolute_uri(event, 'presale:event.index', kwargs={
+            }), lambda event: eventreverse_absolute(event, 'presale:event.index', kwargs={
                'event': event.slug,
                'organizer': event.organizer.slug,
            })
@@ -37,7 +37,7 @@ from pretix.base.services.mail import mail
 from pretix.base.settings import GlobalSettingsObject
 from pretix.base.signals import periodic_task
 from pretix.celery_app import app
-from pretix.helpers.urls import build_absolute_uri
+from pretix.helpers.urls import mainreverse_absolute


@receiver(signal=periodic_task)
@@ -121,7 +121,7 @@ def send_update_notification_email():
            )
        ),
        {
-            'url': build_absolute_uri('control:global.update')
+            'url': mainreverse_absolute('control:global.update')
        },
    )

@@ -211,12 +211,25 @@ DEFAULTS = {
        'form_class': forms.BooleanField,
        'serializer_class': serializers.BooleanField,
        'form_kwargs': dict(
-            label=_("Activate re-usable media"),
-            help_text=_("The re-usable media feature allows you to connect tickets and gift cards with physical media "
-                        "such as wristbands or chip cards that may be re-used for different tickets or gift cards "
+            label=_("Activate reusable media"),
+            help_text=_("The reusable media feature allows you to connect tickets and gift cards with physical media "
+                        "such as wristbands or chip cards that may be reused for different tickets or gift cards "
                        "later.")
        )
    },
+    'reusable_media_usage_enforced': {
+        'default': 'False',
+        'type': bool,
+        'form_class': forms.BooleanField,
+        'serializer_class': serializers.BooleanField,
+        'form_kwargs': dict(
+            label=_("Enforce the usage of issued reusable media for check-in"),
+            help_text=_("If enabled, a ticket barcode will not be accepted anymore, if a reusable medium has been "
+                        "created and linked to a ticket. Keeping this option turned off will treat the reusable "
+                        "medium and ticket as equals."),
+            widget=forms.CheckboxInput(attrs={'data-display-dependency': '#id_settings-reusable_media_active'}),
+        )
+    },
    'reusable_media_type_barcode': {
        'default': 'False',
        'type': bool,
@@ -3719,10 +3732,6 @@ Your {organizer} team"""))  # noqa: W291
        'default': '',
        'type': str,
    },
-    'use_fts_beta': {
-        'default': 'False',
-        'type': bool,
-    }
 }
 PERSON_NAME_TITLE_GROUPS = OrderedDict([
    ('english_common', (_('Most common English titles'), (
@@ -11,6 +11,7 @@
    <meta name="viewport" content="width=device-width, initial-scale=1">
    <meta charset="utf-8">
    <link rel="icon" href="{% static "pretixbase/img/favicon.ico" %}">
+    <script type="text/javascript" src="{% static "pretixbase/js/errors.js" %}"></script>
    {% block custom_header %}{% endblock %}
    {% if css_theme %}
        <link rel="stylesheet" type="text/css" href="{{ css_theme }}" />
@@ -21,5 +22,4 @@
    {% block content %}{% endblock %}
 </div>
 </body>
-<script src="{% static "pretixbase/js/errors.js" %}"></script>
 </html>
@@ -55,10 +55,12 @@
                {% trans "You receive these emails based on your notification settings." %}<br>
                <a href="{{ settings_url }}">
                    {% trans "Click here to view and change your notification settings" %}
-                </a><br>
-                <a href="{{ disable_url }}">
-                    {% trans "Click here disable all notifications immediately." %}
                </a>
+                {% if disable_url %}<br>
+                    <a href="{{ disable_url }}">
+                        {% trans "Click here disable all notifications immediately." %}
+                    </a>
+                {% endif %}
            </div>
            <!--[if gte mso 9]>
                    </td></tr></table>
@@ -14,5 +14,6 @@
 {% trans "You receive these emails based on your notification settings." %}
 {% trans "Click here to view and change your notification settings:" %}
 {{ settings_url }}
-{% trans "Click here disable all notifications immediately:" %}
+{% if disable_url %}{% trans "Click here disable all notifications immediately:" %}
 {{ disable_url }}
+{% endif %}
@@ -0,0 +1,28 @@
+{% extends "error.html" %}
+{% load i18n %}
+{% load eventurl %}
+{% load urlreplace %}
+{% load static %}
+
+{% block content %}
+    <h1>{% trans "Please continue in a new tab" %}</h1>
+    <p class="larger">
+        {% blocktrans trimmed %}
+            For security reasons, the following step is only possible in a new tab.
+        {% endblocktrans %}
+    </p>
+    <p class="larger">
+        {% blocktrans trimmed %}
+            If the new tab did not open automatically, please click the following button:
+        {% endblocktrans %}
+    </p>
+    <div class="text-center">
+        <a href="{{ url }}"
+           class="btn btn-primary btn-lg" target="_blank">
+            <span class="fa fa-external-link-square"></span>
+            {% trans "Continue in new tab" %}
+        </a>
+        {{ url|json_script:"framebreak-url" }}
+        <script type="text/javascript" src="{% static "pretixbase/js/framebreak.js" %}"></script>
+    </div>
+{% endblock %}
@@ -2,13 +2,14 @@
 {% load i18n %}
 {% load rich_text %}
 {% load static %}
+{% load wrap_in %}
 {% block title %}{% trans "Redirect" %}{% endblock %}
 {% block content %}
 <i class="fa fa-link fa-fw big-icon"></i>
 <div class="error-details">
    <h1>{% trans "Redirect" %}</h1>
    <h3>
-        {% blocktrans trimmed with host="<strong>"|add:hostname|add:"</strong>"|safe %}
+        {% blocktrans trimmed with host=hostname|wrap_in:'strong' %}
        The link you clicked on wants to redirect you to a destination on the website {{ host }}.
        {% endblocktrans %}
        {% blocktrans trimmed %}
@@ -0,0 +1,32 @@
+#
+# 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 template
+from django.conf import settings
+
+register = template.Library()
+
+
+@register.filter
+def human_readable_locale(value):
+    if not value:
+        return ''
+    return dict(settings.LANGUAGES).get(value, '')
@@ -54,6 +54,7 @@ from markdown.postprocessors import Postprocessor
 from markdown.treeprocessors import UnescapeTreeprocessor
 from tlds import tld_set

+from pretix.base.views.redirect import safelink
 from pretix.helpers.format import SafeFormatter, format_map

 register = template.Library()
@@ -158,8 +159,7 @@ def safelink_callback(attrs, new=False):
    """
    url = html.unescape(attrs.get((None, 'href'), '/'))
    if not url_has_allowed_host_and_scheme(url, allowed_hosts=None) and not url.startswith('mailto:') and not url.startswith('tel:'):
-        signer = signing.Signer(salt='safe-redirect')
-        attrs[None, 'href'] = reverse('redirect') + '?url=' + urllib.parse.quote(signer.sign(url))
+        attrs[None, 'href'] = safelink(url)
        attrs[None, 'target'] = '_blank'
        attrs[None, 'rel'] = 'noopener'
    return attrs
@@ -24,10 +24,12 @@ import calendar
 from dateutil.rrule import DAILY, MONTHLY, WEEKLY, YEARLY, rrule, rrulestr
 from django.conf import settings
 from django.core.exceptions import ValidationError
-from django.core.validators import validate_email
+from django.core.validators import RegexValidator, validate_email
 from django.utils.deconstruct import deconstructible
 from django.utils.translation import gettext_lazy as _

+from pretix.base.templatetags.rich_text import URL_RE
+
 # This file is based on an earlier version of pretix which was released under the Apache License 2.0. The full text of
 # the Apache License 2.0 can be obtained at <http://www.apache.org/licenses/LICENSE-2.0>.
 #
@@ -113,6 +115,33 @@ def multimail_validate(val):
    return s


+class RegexValidatorInverseMatchAndParam(RegexValidator):
+    inverse_match = True
+
+    def __call__(self, value):
+        regex_matches = self.regex.search(str(value))
+        if regex_matches:
+            raise ValidationError(
+                self.message,
+                code=self.code,
+                params={
+                    "value": value,
+                    "match": regex_matches.group(0) if regex_matches else "",
+                }
+            )
+
+
+class NoUrlValidator(RegexValidatorInverseMatchAndParam):
+    regex = URL_RE
+
+    def __init__(self, **kwargs):
+        if not kwargs.get("message"):
+            kwargs["message"] = _('You entered an URL, which is not allowed. Please remove %(match)s from your input.')
+        if not kwargs.get("code"):
+            kwargs["code"] = "contains_url"
+        super().__init__(**kwargs)
+
+
 class RRuleValidator:
    def __init__(self, enforce_simple=False):
        self.enforce_simple = enforce_simple
@@ -19,6 +19,7 @@
 # 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/>.
 #
+import logging
 import urllib.parse

 from django.core import signing
@@ -26,6 +27,8 @@ from django.http import HttpResponseBadRequest, HttpResponseRedirect
 from django.shortcuts import render
 from django.urls import reverse

+logger = logging.getLogger(__name__)
+

 def _is_samesite_referer(request):
    referer = request.headers.get('referer')
@@ -42,11 +45,16 @@ def _is_samesite_referer(request):


 def redir_view(request):
-    signer = signing.Signer(salt='safe-redirect')
+    framebreak = "framebreak" in request.GET
+    salt = 'framebreak-safelink-url' if framebreak else 'safelink-url'
    try:
-        url = signer.unsign(request.GET.get('url', ''))
+        url = signing.Signer(salt=salt).unsign(request.GET.get('url', ''))
    except signing.BadSignature:
-        return HttpResponseBadRequest('Invalid parameter')
+        try:
+            # Backwards-compatibility for a change in 2026-06, remove after a while
+            url = signing.Signer(salt='safe-redirect').unsign(request.GET.get('url', ''))
+        except signing.BadSignature:
+            return HttpResponseBadRequest('Invalid parameter')

    if not _is_samesite_referer(request):
        u = urllib.parse.urlparse(url)
@@ -55,11 +63,26 @@ def redir_view(request):
            'url': url,
        })

+    if framebreak:
+        r = render(request, 'pretixbase/framebreak.html', {
+            'url': url,
+        })
+        r.xframe_options_exempt = True
+        return r
+
    r = HttpResponseRedirect(url)
    r['X-Robots-Tag'] = 'noindex'
    return r


-def safelink(url):
-    signer = signing.Signer(salt='safe-redirect')
-    return reverse('redirect') + '?url=' + urllib.parse.quote(signer.sign(url))
+def safelink(url, framebreak=False):
+    url = str(url)
+    if not (url.startswith('https://') or url.startswith('http://') or url.startswith("/")):
+        logger.warning('Invalid URL passed to safelink: %r', url)
+        return '#invalid-url'
+    salt = 'framebreak-safelink-url' if framebreak else 'safelink-url'
+    signer = signing.Signer(salt=salt)
+    u = reverse('redirect') + '?url=' + urllib.parse.quote(signer.sign(url))
+    if framebreak:
+        u += "&framebreak=true"
+    return u
@@ -461,3 +461,31 @@ class SalesChannelCheckboxSelectMultiple(forms.CheckboxSelectMultiple):
            **super().create_option(name, value, label, selected, index, subindex, attrs),
            "plugin_missing": plugin and plugin not in self.event.get_plugins(),
        }
+
+
+class ModelChoiceIteratorWithNone(forms.models.ModelChoiceIterator):
+    # see django.forms.models.ModelChoiceIterator for original implementation
+    def __iter__(self):
+        if self.field.empty_label is not None:
+            yield ("", self.field.empty_label)
+        if self.field.none_label is not None:
+            yield ("_none", self.field.none_label)
+        queryset = self.queryset
+        # Can't use iterator() when queryset uses prefetch_related()
+        if not queryset._prefetch_related_lookups:
+            queryset = queryset.iterator()
+        for obj in queryset:
+            yield self.choice(obj)
+
+
+class ModelChoiceFieldWithNone(forms.ModelChoiceField):
+    iterator = ModelChoiceIteratorWithNone
+
+    def __init__(self, *args, **kwargs):
+        self.none_label = kwargs.pop("none_label", None)
+        super().__init__(*args, **kwargs)
+
+    def to_python(self, value):
+        if value == "_none":
+            return value
+        return super().to_python(value)
@@ -80,7 +80,7 @@ from pretix.control.forms.widgets import Select2
 from pretix.helpers.countries import CachedCountries
 from pretix.multidomain.models import AlternativeDomainAssignment, KnownDomain
 from pretix.multidomain.urlreverse import (
-    build_absolute_uri, get_organizer_domain,
+    eventreverse_absolute, get_organizer_domain,
 )
 from pretix.plugins.banktransfer.payment import BankTransfer
 from pretix.presale.style import get_fonts
@@ -219,7 +219,7 @@ class EventWizardBasicsForm(I18nModelForm):
        self.fields['location'].widget.attrs['placeholder'] = _(
            'Sample Conference Center\nHeidelberg, Germany'
        )
-        self.fields['slug'].widget.prefix = build_absolute_uri(self.organizer, 'presale:organizer.index')
+        self.fields['slug'].widget.prefix = eventreverse_absolute(self.organizer, 'presale:organizer.index')
        self.fields['tax_rate']._required = True  # Do not render as optional because it is conditionally required
        if self.has_subevents:
            del self.fields['presale_start']
@@ -830,9 +830,10 @@ class CancelSettingsForm(SettingsForm):
    def __init__(self, *args, **kwargs):
        super().__init__(*args, **kwargs)
        if self.obj.settings.giftcard_expiry_years is not None:
-            self.fields['cancel_allow_user_paid_refund_as_giftcard'].help_text = gettext(
-                'You have configured gift cards to be valid {} years plus the year the gift card is issued in.'
-            ).format(self.obj.settings.giftcard_expiry_years)
+            self.fields['cancel_allow_user_paid_refund_as_giftcard'].help_text = format_html(
+                gettext('You have configured gift cards to be valid {} years plus the year the gift card is issued in.'),
+                self.obj.settings.giftcard_expiry_years
+            )


 class PaymentSettingsForm(EventSettingsValidationMixin, SettingsForm):
@@ -57,11 +57,10 @@ from pretix.base.forms.widgets import (
 from pretix.base.models import (
    Checkin, CheckinList, Device, Event, EventMetaProperty, EventMetaValue,
    Gate, Invoice, InvoiceAddress, Item, Order, OrderPayment, OrderPosition,
-    OrderRefund, OrderSearchIndex, Organizer, OutgoingMail, Question,
-    QuestionAnswer, Quota, SalesChannel, SubEvent, SubEventMetaValue, Team,
-    TeamAPIToken, TeamInvite, Voucher,
+    OrderRefund, Organizer, OutgoingMail, Question, QuestionAnswer, Quota,
+    SalesChannel, SubEvent, SubEventMetaValue, Team, TeamAPIToken, TeamInvite,
+    Voucher,
 )
-from pretix.base.settings import GlobalSettingsObject
 from pretix.base.signals import register_payment_providers
 from pretix.base.timeframes import (
    DateFrameField,
@@ -263,61 +262,52 @@ class OrderFilterForm(FilterForm):

        if fdata.get('query'):
            u = fdata.get('query')
-            fts_beta = (
-                self.event.settings.use_fts_beta
-                if hasattr(self, 'event')
-                else GlobalSettingsObject().settings.use_fts_beta
-            )
-            if fts_beta:
-                qs = qs.filter(
-                    pk__in=OrderSearchIndex.objects.search_for(u).values_list("order_id", flat=True)
-                )
+
+            if "-" in u:
+                code = (Q(event__slug__icontains=u.rsplit("-", 1)[0])
+                        & Q(code__icontains=Order.normalize_code(u.rsplit("-", 1)[1])))
            else:
-                if "-" in u:
-                    code = (Q(event__slug__icontains=u.rsplit("-", 1)[0])
-                            & Q(code__icontains=Order.normalize_code(u.rsplit("-", 1)[1])))
-                else:
-                    code = Q(code__icontains=Order.normalize_code(u))
+                code = Q(code__icontains=Order.normalize_code(u))

-                invoice_nos = {u, u.upper()}
-                if u.isdigit():
-                    for i in range(2, 12):
-                        invoice_nos.add(u.zfill(i))
+            invoice_nos = {u, u.upper()}
+            if u.isdigit():
+                for i in range(2, 12):
+                    invoice_nos.add(u.zfill(i))

-                matching_invoices = Invoice.objects.filter(
-                    Q(invoice_no__in=invoice_nos)
-                    | Q(full_invoice_no__iexact=u)
-                ).values_list('order_id', flat=True)
-                matching_positions = OrderPosition.all.filter(
-                    Q(
-                        Q(attendee_name_cached__icontains=u) | Q(attendee_email__icontains=u)
-                        | Q(company__icontains=u)
-                        | Q(secret__istartswith=u)
-                        | Q(pseudonymization_id__istartswith=u)
-                    )
-                ).values_list('order_id', flat=True)
-                matching_invoice_addresses = InvoiceAddress.objects.filter(
-                    Q(
-                        Q(name_cached__icontains=u) | Q(company__icontains=u)
-                    )
-                ).values_list('order_id', flat=True)
-                matching_orders = Order.objects.filter(
-                    code
-                    | Q(email__icontains=u)
-                    | Q(comment__icontains=u)
-                ).values_list('id', flat=True)
-
-                mainq = (
-                    Q(pk__in=matching_orders)
-                    | Q(pk__in=matching_invoices)
-                    | Q(pk__in=matching_positions)
-                    | Q(pk__in=matching_invoice_addresses)
+            matching_invoices = Invoice.objects.filter(
+                Q(invoice_no__in=invoice_nos)
+                | Q(full_invoice_no__iexact=u)
+            ).values_list('order_id', flat=True)
+            matching_positions = OrderPosition.all.filter(
+                Q(
+                    Q(attendee_name_cached__icontains=u) | Q(attendee_email__icontains=u)
+                    | Q(company__icontains=u)
+                    | Q(secret__istartswith=u)
+                    | Q(pseudonymization_id__istartswith=u)
                )
-                for recv, q in order_search_filter_q.send(sender=getattr(self, 'event', None), query=u):
-                    mainq = mainq | q
-                qs = qs.filter(
-                    mainq
+            ).values_list('order_id', flat=True)
+            matching_invoice_addresses = InvoiceAddress.objects.filter(
+                Q(
+                    Q(name_cached__icontains=u) | Q(company__icontains=u)
                )
+            ).values_list('order_id', flat=True)
+            matching_orders = Order.objects.filter(
+                code
+                | Q(email__icontains=u)
+                | Q(comment__icontains=u)
+            ).values_list('id', flat=True)
+
+            mainq = (
+                Q(pk__in=matching_orders)
+                | Q(pk__in=matching_invoices)
+                | Q(pk__in=matching_positions)
+                | Q(pk__in=matching_invoice_addresses)
+            )
+            for recv, q in order_search_filter_q.send(sender=getattr(self, 'event', None), query=u):
+                mainq = mainq | q
+            qs = qs.filter(
+                mainq
+            )

        if fdata.get('status'):
            s = fdata.get('status')
@@ -1352,7 +1342,13 @@ class QuestionAnswerFilterForm(forms.Form):
            opqs = opqs.filter(canceled=False)
        if fdata.get("item", "") != "":
            i = fdata.get("item", "")
-            opqs = opqs.filter(item_id__in=(i,))
+            if '-' in i:
+                opqs = opqs.filter(
+                    item_id=i.split('-')[0],
+                    variation_id=i.split('-')[1],
+                )
+            else:
+                opqs = opqs.filter(item_id=i)

        return opqs

@@ -1881,7 +1877,7 @@ class ReusableMediaFilterForm(FilterForm):
                Q(identifier__icontains=query)
                | Q(customer__identifier__icontains=query)
                | Q(customer__external_identifier__istartswith=query)
-                | Q(linked_orderposition__order__code__icontains=query)
+                | Q(linked_orderpositions__order__code__icontains=query)
                | Q(linked_giftcard__secret__icontains=query)
            )

@@ -108,13 +108,10 @@ class GlobalSettingsForm(SettingsForm):
            ('widget_vite_origins', forms.CharField(
                widget=forms.Textarea(attrs={'rows': '3'}),
                required=False,
-                label=_("Vite widget origins"),
-                help_text=_("One origin per line (e.g. https://example.com). Requests from these origins will be served the new vite-based widget."),
-            )),
-            ('use_fts_beta', forms.BooleanField(
-                required=False,
-                label=_("Use full-text search beta"),
-            )),
+                # Not translated on purpose, this is a temporary feature and contains too many special case words
+                label="Vite widget origins",
+                help_text="One origin per line (e.g. https://example.com). Requests from these origins will be served the new vite-based widget.",
+            ))
        ])
        responses = register_global_settings.send(self)
        for r, response in sorted(responses, key=lambda r: str(r[0])):
@@ -22,7 +22,7 @@
 from django import forms
 from django.core.exceptions import ValidationError
 from django.utils.functional import lazy
-from django.utils.html import format_html
+from django.utils.html import conditional_escape, format_html
 from django.utils.translation import gettext_lazy as _

 from pretix.base.modelimport_orders import get_order_import_columns
@@ -66,7 +66,7 @@ class ProcessForm(forms.Form):
                widget=forms.Select(
                    attrs={'data-static': 'true'}
                ),
-                help_text=c.help_text,
+                help_text=conditional_escape(c.help_text),
            )

    def get_columns(self):
@@ -86,9 +86,9 @@ from pretix.control.forms import ExtFileField, SplitDateTimeField
 from pretix.control.forms.event import (
    SafeEventMultipleChoiceField, multimail_validate,
 )
-from pretix.control.forms.widgets import Select2
+from pretix.control.forms.widgets import Select2, Select2Multiple
 from pretix.multidomain.models import KnownDomain
-from pretix.multidomain.urlreverse import build_absolute_uri
+from pretix.multidomain.urlreverse import eventreverse_absolute


 class OrganizerForm(I18nModelForm):
@@ -249,6 +249,15 @@ class SafeOrderPositionChoiceField(forms.ModelChoiceField):
        return f'{op.order.code}-{op.positionid} ({str(op.item) + ((" - " + str(op.variation)) if op.variation else "")})'


+class SafeOrderPositionMultipleChoiceField(forms.ModelMultipleChoiceField):
+    def __init__(self, queryset, **kwargs):
+        queryset = queryset.model.all.none()
+        super().__init__(queryset, **kwargs)
+
+    def label_from_instance(self, op):
+        return f'{op.order.code}-{op.positionid} ({str(op.item) + ((" - " + str(op.variation)) if op.variation else "")})'
+
+
 class EventMetaPropertyForm(I18nModelForm):
    class Meta:
        model = EventMetaProperty
@@ -355,7 +364,7 @@ class TeamForm(forms.ModelForm):
                    for opt in pg.options
                ],
                label=pg.label,
-                help_text=pg.help_text,
+                help_text=conditional_escape(pg.help_text),
                initial=initial,
                widget=forms.RadioSelect,
            )
@@ -380,7 +389,7 @@ class TeamForm(forms.ModelForm):
                    for opt in pg.options
                ],
                label=pg.label,
-                help_text=pg.help_text,
+                help_text=conditional_escape(pg.help_text),
                initial=initial,
                widget=forms.RadioSelect,
            )
@@ -627,6 +636,7 @@ class OrganizerSettingsForm(SettingsForm):
        'cookie_consent_dialog_button_yes',
        'cookie_consent_dialog_button_no',
        'reusable_media_active',
+        'reusable_media_usage_enforced',
        'reusable_media_type_barcode',
        'reusable_media_type_barcode_identifier_length',
        'reusable_media_type_nfc_uid',
@@ -781,7 +791,7 @@ class MailSettingsForm(SettingsForm):
        }

        if 'url' in base_parameters:
-            placeholders['url'] = build_absolute_uri(
+            placeholders['url'] = eventreverse_absolute(
                self.organizer,
                'presale:organizer.customer.activate'
            ) + '?token=' + get_random_string(30)
@@ -963,12 +973,12 @@ class ReusableMediumUpdateForm(forms.ModelForm):

    class Meta:
        model = ReusableMedium
-        fields = ['active', 'expires', 'customer', 'linked_giftcard', 'linked_orderposition', 'notes']
+        fields = ['active', 'expires', 'customer', 'linked_giftcard', 'linked_orderpositions', 'notes']
        field_classes = {
            'expires': SplitDateTimeField,
            'customer': SafeModelChoiceField,
            'linked_giftcard': SafeModelChoiceField,
-            'linked_orderposition': SafeOrderPositionChoiceField,
+            'linked_orderpositions': SafeOrderPositionMultipleChoiceField,
        }
        widgets = {
            'expires': SplitDateTimePickerWidget,
@@ -978,8 +988,8 @@ class ReusableMediumUpdateForm(forms.ModelForm):
        super().__init__(*args, **kwargs)
        organizer = self.instance.organizer

-        self.fields['linked_orderposition'].queryset = OrderPosition.all.filter(order__event__organizer=organizer).all()
-        self.fields['linked_orderposition'].widget = Select2(
+        self.fields['linked_orderpositions'].queryset = OrderPosition.all.filter(order__event__organizer=organizer).all()
+        self.fields['linked_orderpositions'].widget = Select2Multiple(
            attrs={
                'data-model-select2': 'generic',
                'data-select2-url': reverse('control:organizer.ticket_select2', kwargs={
@@ -987,8 +997,8 @@ class ReusableMediumUpdateForm(forms.ModelForm):
                }),
            }
        )
-        self.fields['linked_orderposition'].widget.choices = self.fields['linked_orderposition'].choices
-        self.fields['linked_orderposition'].required = False
+        self.fields['linked_orderpositions'].widget.choices = self.fields['linked_orderpositions'].choices
+        self.fields['linked_orderpositions'].required = False

        self.fields['linked_giftcard'].queryset = organizer.issued_gift_cards.all()
        self.fields['linked_giftcard'].widget = Select2(
@@ -1042,12 +1052,12 @@ class ReusableMediumCreateForm(ReusableMediumUpdateForm):

    class Meta:
        model = ReusableMedium
-        fields = ['active', 'type', 'identifier', 'expires', 'linked_orderposition', 'linked_giftcard', 'customer', 'notes']
+        fields = ['active', 'type', 'identifier', 'expires', 'linked_orderpositions', 'linked_giftcard', 'customer', 'notes']
        field_classes = {
            'expires': SplitDateTimeField,
            'customer': SafeModelChoiceField,
            'linked_giftcard': SafeModelChoiceField,
-            'linked_orderposition': SafeOrderPositionChoiceField,
+            'linked_orderpositions': SafeOrderPositionMultipleChoiceField,
        }
        widgets = {
            'expires': SplitDateTimePickerWidget,
@@ -41,6 +41,7 @@ from django.core.exceptions import ObjectDoesNotExist, ValidationError
 from django.core.validators import EmailValidator
 from django.db.models.functions import Upper
 from django.urls import reverse
+from django.utils.html import escape
 from django.utils.translation import gettext_lazy as _
 from django_scopes.forms import SafeModelChoiceField

@@ -161,7 +162,7 @@ class VoucherForm(I18nModelForm):
                required=False,
                widget=forms.TextInput(attrs={'data-seat-guid-field': '1'}),
                initial=self.instance.seat.seat_guid if self.instance.seat else '',
-                help_text=str(self.instance.seat) if self.instance.seat else '',
+                help_text=escape(str(self.instance.seat) if self.instance.seat else ''),
            )

    def clean(self):
@@ -29,17 +29,30 @@ class Select2Mixin:
        super().__init__(*args, **kwargs)

    def options(self, name, value, attrs=None):
-        if value and value[0]:
-            for i, selected in enumerate(self.choices.queryset.filter(pk__in=value)):
-                yield self.create_option(
-                    None,
-                    self.choices.field.prepare_value(selected),
-                    self.choices.field.label_from_instance(selected),
-                    True,
-                    i,
-                    subindex=None,
-                    attrs=attrs
-                )
+        if not value or not value[0]:
+            return
+        has_none = "_none" in value
+        if has_none:
+            value = [v for v in value if v != "_none"]
+            yield self.create_option(
+                None,
+                "_none",
+                self.choices.field.none_label,
+                True,
+                0,
+                subindex=None,
+                attrs=attrs
+            )
+        for i, selected in enumerate(self.choices.queryset.filter(pk__in=value)):
+            yield self.create_option(
+                None,
+                self.choices.field.prepare_value(selected),
+                self.choices.field.label_from_instance(selected),
+                True,
+                i + (1 if has_none else 0),
+                subindex=None,
+                attrs=attrs
+            )
        return

    def optgroups(self, name, value, attrs=None):
@@ -743,7 +743,10 @@ class CoreUserImpersonatedLogEntryType(UserImpersonatedLogEntryType):
    'pretix.reusable_medium.created': _('The reusable medium has been created.'),
    'pretix.reusable_medium.created.auto': _('The reusable medium has been created automatically.'),
    'pretix.reusable_medium.changed': _('The reusable medium has been changed.'),
+    'pretix.reusable_medium.linked_orderposition.added': _('A new ticket has been added to the medium.'),
+    'pretix.reusable_medium.linked_orderposition.removed': _('A ticket has been removed from the medium.'),
    'pretix.reusable_medium.linked_orderposition.changed': _('The medium has been connected to a new ticket.'),
+    'pretix.reusable_medium.exchanged': _('The ticket #{positionid} was exchanged for reusable medium {medium_identifier}.'),
    'pretix.reusable_medium.linked_giftcard.changed': _('The medium has been connected to a new gift card.'),
    'pretix.email.error': _('Sending of an email has failed.'),
    'pretix.event.comment': _('The event\'s internal comment has been updated.'),
@@ -212,7 +212,7 @@ class AuditLogMiddleware:
        if request.path.startswith(get_script_prefix() + 'control') and request.user.is_authenticated:
            if getattr(request.user, "is_hijacked", False):
                hijack_history = request.session.get('hijack_history', False)
-                hijacker = get_object_or_404(User, pk=hijack_history[0])
+                hijacker = get_object_or_404(User, pk=hijack_history[0]["user"])
                ss = hijacker.get_active_staff_session(request.session.get('hijacker_session'))
                if ss:
                    ss.logs.create(
@@ -213,6 +213,16 @@ quota as argument in the ``quota`` keyword argument.
 As with all event plugin signals, the ``sender`` keyword argument will contain the event.
 """

+subevent_detail_html = EventPluginSignal()
+"""
+Arguments: 'subevent'
+
+This signal allows you to append HTML to a SubEvent's detail view. You receive the
+subevent as argument in the ``subevent`` keyword argument.
+
+As with all event plugin signals, the ``sender`` keyword argument will contain the event.
+"""
+
 organizer_edit_tabs = DeprecatedSignal()
 """
 Arguments: 'organizer', 'request'
@@ -261,6 +271,16 @@ As with all event plugin signals, the ``sender`` keyword argument will contain t
 Additionally, the argument ``order`` and ``request`` are available.
 """

+order_approve_info = EventPluginSignal()
+"""
+Arguments: ``order``, ``request``
+
+This signal is sent out to display additional information on the order approve page
+
+As with all event plugin signals, the ``sender`` keyword argument will contain the event.
+Additionally, the argument ``order`` and ``request`` are available.
+"""
+
 order_position_buttons = EventPluginSignal()
 """
 Arguments: ``order``, ``position``, ``request``
@@ -38,6 +38,7 @@ from pretix import __version__
 from pretix.base.models import Order, OrderPayment, Transaction
 from pretix.base.plugins import get_all_plugins
 from pretix.base.templatetags.money import money_filter
+from pretix.helpers.reportlab import PlainTextParagraph
 from pretix.plugins.reports.exporters import ReportlabExportMixin
 from pretix.settings import DATA_DIR

@@ -79,23 +80,23 @@ class SysReport(ReportlabExportMixin):
        style_small.fontSize = 6

        story = [
-            Paragraph("System report", headlinestyle),
+            PlainTextParagraph("System report", headlinestyle),
            Spacer(1, 5 * mm),
-            Paragraph("Usage", subheadlinestyle),
+            PlainTextParagraph("Usage", subheadlinestyle),
            Spacer(1, 5 * mm),
            self._usage_table(),
            Spacer(1, 5 * mm),
-            Paragraph("Installed versions", subheadlinestyle),
+            PlainTextParagraph("Installed versions", subheadlinestyle),
            Spacer(1, 5 * mm),
            self._tech_table(),
            Spacer(1, 5 * mm),
-            Paragraph("Plugins", subheadlinestyle),
+            PlainTextParagraph("Plugins", subheadlinestyle),
            Spacer(1, 5 * mm),
-            Paragraph(self._get_plugin_versions(), style_small),
+            PlainTextParagraph(self._get_plugin_versions(), style_small),
            Spacer(1, 5 * mm),
-            Paragraph("Custom templates", subheadlinestyle),
+            PlainTextParagraph("Custom templates", subheadlinestyle),
            Spacer(1, 5 * mm),
-            Paragraph(self._get_custom_templates(), style_small),
+            PlainTextParagraph(self._get_custom_templates(), style_small),
            Spacer(1, 5 * mm),
        ]

@@ -121,13 +122,13 @@ class SysReport(ReportlabExportMixin):
            ("RIGHTPADDING", (-1, 0), (-1, -1), 0),
        ]
        tdata = [
-            [Paragraph("Site URL:", style), Paragraph(settings.SITE_URL, style)],
-            [Paragraph("pretix version:", style), Paragraph(__version__, style)],
-            [Paragraph("Python version:", style), Paragraph(sys.version, style)],
-            [Paragraph("Platform:", style), Paragraph(platform.platform(), style)],
+            [PlainTextParagraph("Site URL:", style), Paragraph(settings.SITE_URL, style)],
+            [PlainTextParagraph("pretix version:", style), Paragraph(__version__, style)],
+            [PlainTextParagraph("Python version:", style), Paragraph(sys.version, style)],
+            [PlainTextParagraph("Platform:", style), Paragraph(platform.platform(), style)],
            [
-                Paragraph("Database engine:", style),
-                Paragraph(settings.DATABASES["default"]["ENGINE"], style),
+                PlainTextParagraph("Database engine:", style),
+                PlainTextParagraph(settings.DATABASES["default"]["ENGINE"], style),
            ],
        ]
        table = Table(tdata, colWidths=colwidths, repeatRows=0)
@@ -206,7 +207,7 @@ class SysReport(ReportlabExportMixin):
        year_last = now().year
        tdata = [
            [
-                Paragraph(l, style_small_head)
+                PlainTextParagraph(l, style_small_head)
                for l in (
                    "Time frame",
                    "Currency",
@@ -257,19 +258,19 @@ class SysReport(ReportlabExportMixin):

                tdata.append(
                    (
-                        Paragraph(
+                        PlainTextParagraph(
                            date_format(first_day, "M Y")
                            + " – "
                            + date_format(after_day - timedelta(days=1), "M Y"),
                            style_small,
                        ),
-                        Paragraph(c, style_small),
-                        Paragraph(str(orders_count), style_small) if i == 0 else "",
-                        Paragraph(money_filter(revenue_data.get("s_net") or 0, c), style_small),
-                        Paragraph(str(testmode_count), style_small) if i == 0 else "",
-                        Paragraph(str(unconfirmed_count), style_small) if i == 0 else "",
-                        Paragraph(str(revenue_data.get("c") or 0), style_small),
-                        Paragraph(money_filter(revenue_data.get("s_gross") or 0, c), style_small),
+                        PlainTextParagraph(c, style_small),
+                        PlainTextParagraph(str(orders_count), style_small) if i == 0 else "",
+                        PlainTextParagraph(money_filter(revenue_data.get("s_net") or 0, c), style_small),
+                        PlainTextParagraph(str(testmode_count), style_small) if i == 0 else "",
+                        PlainTextParagraph(str(unconfirmed_count), style_small) if i == 0 else "",
+                        PlainTextParagraph(str(revenue_data.get("c") or 0), style_small),
+                        PlainTextParagraph(money_filter(revenue_data.get("s_gross") or 0, c), style_small),
                    )
                )

@@ -66,6 +66,7 @@
            <script type="text/javascript" src="{% static "lightbox/js/lightbox.js" %}"></script>
            <script type="text/javascript" src="{% static "are-you-sure/jquery.are-you-sure.js" %}"></script>
            <script type="text/javascript" src="{% static "pretixbase/js/addressform.js" %}"></script>
+            <script type="text/javascript" src="{% static "pretixbase/js/errors.js" %}"></script>
 		{% endcompress %}
        {{ html_head|safe }}

@@ -54,6 +54,8 @@
                    <span class="fa fa-check-circle"></span>
                {% elif result.status == "incomplete" %}
                    <span class="fa fa-question-circle"></span>
+                {% elif result.status == "exchange" %}
+                    <span class="fa fa-recycle"></span>
                {% elif result.status == "error" %}
                    {% if result.reason == "already_redeemed" %}
                        <span class="fa fa-warning"></span>
@@ -79,6 +81,14 @@
                            </li>
                        {% endfor %}
                    </ul>
+                {% elif result.status == "exchange" %}
+                    <h3 class="nomargin-top">{% trans "Media exchange required" %}</h3>
+                    <p>
+                        {% blocktrans trimmed with media_policy=media_policies|getitem:result.media_policy media_type=media_types|getitem:result.media_type %}
+                            This ticket needs to be exchanged into a <strong>{{ media_type }}</strong> reusable medium.
+                            <strong>{{ media_policy }}</strong>.
+                        {% endblocktrans %}
+                    </p>
                {% elif result.status == "error" %}
                    <h3 class="nomargin-top">{{ reason_labels|getitem:result.reason }}</h3>
                    {% if result.reason_explanation %}
@@ -9,23 +9,24 @@
            <h3 class="panel-title">{% trans "Go offline" %}</h3>
        </div>
        <div class="row panel-body">
-            <div class="col-sm-12 col-md-9 nomargin-bottom">
+            <div class="col-sm-12 col-lg-6">
+                <p>
                {% blocktrans trimmed %}
                    You can take your event offline. Nobody except your team will be able to see or access it any more.
                {% endblocktrans %}
-            </div>
-            <div class="col-sm-12 col-md-3">
-                <form action="{% url "control:event.live" event=request.event.slug organizer=request.organizer.slug %}"
-                        method="post">
-                    {% csrf_token %}
-                    <input type="hidden" name="live" value="false">
+                </p>
+            </div>            
+            <form class="col-sm-12 col-lg-6 text-right"
+                    action="{% url "control:event.live" event=request.event.slug organizer=request.organizer.slug %}"
+                    method="post">
+                {% csrf_token %}
+                <input type="hidden" name="live" value="false">

-                    <button type="submit" class="btn btn-primary btn-lg btn-block">
-                        <span class="fa fa-power-off"></span>
-                        {% trans "Go offline" %}
-                    </button>
-                </form>
-            </div>
+                <button type="submit" class="btn btn-primary btn-lg">
+                    <span class="fa fa-power-off"></span>
+                    {% trans "Go offline" %}
+                </button>
+            </form>
        </div>
    </div>

@@ -34,22 +35,24 @@
            <h3 class="panel-title">{% trans "Cancel event" %}</h3>
        </div>
        <div class="row panel-body">
-            <div class="col-sm-12 col-md-9 nomargin-bottom">
+            <div class="col-sm-12 col-lg-6">
+                <p>
                {% blocktrans trimmed %}
                    If you need to call off your event you want to cancel and refund all tickets, you can do so through
                    this option.
                {% endblocktrans %}
+                </p>
            </div>
-            <div class="col-sm-12 col-md-3 text-center">
-                {% if "event:cancel" in request.eventpermset %}
-                    <a href="{% url "control:event.cancel" organizer=request.organizer.slug event=request.event.slug %}"
-                            class="btn btn-danger btn-block btn-lg">
-                        <span class="fa fa-ban"></span>
+            <div class="col-sm-12 col-lg-6 text-right">
+                <a href="{% url "control:event.cancel" organizer=request.organizer.slug event=request.event.slug %}"
+                        class="btn btn-danger btn-lg pull-right {% if "event:cancel" not in request.eventpermset %}disabled{% endif %}">
+                    <span class="fa fa-ban"></span>
+                    {% if "event:cancel" in request.eventpermset %}
                        {% trans "Cancel event" %}
-                    </a>
-                {% else %}
-                    {% trans "No permission" %}
-                {% endif %}
+                    {% else %}
+                        {% trans "No permission" %}
+                    {% endif %}
+                </a>
            </div>
        </div>
    </div>
@@ -59,15 +62,16 @@
            <h3 class="panel-title">{% trans "Delete personal data" %}</h3>
        </div>
        <div class="row panel-body">
-            <div class="col-sm-12 col-md-9 nomargin-bottom">
+            <div class="col-sm-12 col-lg-6">
+                <p>
                {% blocktrans trimmed %}
                    You can remove personal data such as names and email addresses from your event and only retain the
                    financial information such as the number and type of tickets sold.
                {% endblocktrans %}
+                </p>
            </div>
-            <div class="col-sm-12 col-md-3">
-                <a href="
-{% url "control:event.shredder.start" event=request.event.slug organizer=request.organizer.slug %}" class="btn btn-danger btn-lg btn-block">
+            <div class="col-sm-12 col-lg-6 text-right">
+                <a href="{% url "control:event.shredder.start" event=request.event.slug organizer=request.organizer.slug %}" class="btn btn-danger btn-lg">
                    <span class="fa fa-eraser"></span>
                    {% trans "Delete personal data" %}
                </a>
@@ -80,15 +84,17 @@
            <h3 class="panel-title">{% trans "Delete event" %}</h3>
        </div>
        <div class="row panel-body">
-            <div class="col-sm-12 col-md-9 nomargin-bottom">
+            <div class="col-sm-12 col-lg-6">
+                <p>
                {% blocktrans trimmed %}
                    You can delete your event completely only as long as it does not contain any undeletable data, such as
                    orders not performed in test mode.
                {% endblocktrans %}
+                </p>
            </div>
-            <div class="col-sm-12 col-md-3">
+            <div class="col-sm-12 col-lg-6 text-right">
                <a href="{% url "control:event.delete" organizer=request.organizer.slug event=request.event.slug %}"
-                        class="btn btn-danger btn-block btn-lg {% if not request.event.allow_delete %}disabled{% endif %}">
+                        class="btn btn-danger btn-lg {% if not request.event.allow_delete %}disabled{% endif %}">
                    <span class="fa fa-trash"></span>
                    {% trans "Delete event" %}
                </a>
@@ -1,4 +1,5 @@
 {% extends "pretixcontrol/event/base.html" %}
+{% load eventsignal %}
 {% load i18n %}
 {% block title %}
    {% trans "Approve order" %}
@@ -7,6 +8,9 @@
    <h1>
        {% trans "Approve order" %}
    </h1>
+
+    {% eventsignal request.event "pretix.control.signals.order_approve_info" order=order request=request %}
+
    <p>{% blocktrans trimmed %}
        Do you really want to approve this order?
    {% endblocktrans %}</p>
@@ -134,6 +134,39 @@
        </div>
    {% endif %}

+    {% if invoice_qualified and order.invoice_dirty %}
+        <div class="alert alert-warning">
+            <p>
+                {% blocktrans trimmed %}
+                    This order was changed after the last invoice was generated. A new invoice was not generated yet, because invoices are configured to be generated on payment or if required by the payment method.
+                    A new invoice will be generated once the customer pays the invoice or selects a payment method that requires an invoice.
+                {% endblocktrans %}
+            </p>
+            {% if "event.orders:write" in request.eventpermset %}
+                <p>
+                    {% if uncancelled_invoice %}
+                        <form action="{% url "control:event.order.reissueinvoice" event=request.event.slug organizer=request.event.organizer.slug code=order.code id=uncancelled_invoice.pk %}"
+                                method="post">
+                            {% csrf_token %}
+                            <button class="btn btn-default" type="submit">
+                                {% blocktrans trimmed %}
+                                    Reissue invoice
+                                {% endblocktrans %}
+                            </button>
+                        </form>
+                    {% elif can_generate_invoice %}
+                        <form method="post" action="{% url "control:event.order.geninvoice" event=request.event.slug organizer=request.event.organizer.slug code=order.code %}">
+                            {% csrf_token %}
+                            <button class="btn btn-default">
+                                {% trans "Generate invoice" %}
+                            </button>
+                        </form>
+                    {% endif %}
+                </p>
+            {% endif %}
+        </div>
+    {% endif %}
+
    <div class="row">
        <div class="col-xs-12 col-lg-10">
            {% for cr in order.cancellation_requests.all %}
@@ -553,7 +586,7 @@
                                            <span class="fa fa-print"></span>
                                            {{ pl.datetime|date:"SHORT_DATETIME_FORMAT" }}
                                            {{ pl.get_type_display }}
-                                            ({{ pl.source }}{% if pl.device %}, #{{ pl.device.device_id }}{% endif %})
+                                            ({{ pl.source }}{% if pl.device %}, {{ pl.device.name }} - #{{ pl.device.device_id }}{% endif %})
                                            {% if not pl.successful %}<span class="fa fa-warning fa-fw"></span>{% endif %}
                                            <br>
                                        {% endfor %}
@@ -1045,7 +1078,7 @@
                                        <dt>{% trans "VAT ID" %}</dt>
                                        <dd>
                                            {{ order.invoice_address.vat_id }}
-                                            {% if order.invoice_address.vat_id_validated %}
+                                            {% if order.invoice_address.vat_id and order.invoice_address.vat_id_validated %}
                                                <span class="fa fa-check" data-toggle="tooltip" title="{% blocktrans trimmed %}Valid EU VAT ID{% endblocktrans %}"></span>
                                            {% elif order.invoice_address.vat_id %}
                                                <form class="form-inline helper-display-inline" method="post"
@@ -222,6 +222,7 @@
                    <fieldset>
                        <legend>{% trans "Reusable media" %}</legend>
                        {% bootstrap_field sform.reusable_media_active layout="control" %}
+                        {% bootstrap_field sform.reusable_media_usage_enforced layout="control" %}
                        <div data-display-dependency="#{{ sform.reusable_media_active.id_for_label }}">

                            <div class="panel panel-default">
@@ -58,8 +58,8 @@
                        <a href="?{% url_replace request 'ordering' 'identifier' %}"><i class="fa fa-caret-up"></i></a>
                    </th>
                    <th>{% trans "Media type" context "reusable_media" %}
-                        <a href="?{% url_replace request 'ordering' '-email' %}"><i class="fa fa-caret-down"></i></a>
-                        <a href="?{% url_replace request 'ordering' 'email' %}"><i class="fa fa-caret-up"></i></a></th>
+                        <a href="?{% url_replace request 'ordering' '-type' %}"><i class="fa fa-caret-down"></i></a>
+                        <a href="?{% url_replace request 'ordering' 'type' %}"><i class="fa fa-caret-up"></i></a></th>
                    <th>{% trans "Connections" context "reusable_media" %}</th>
                    <th></th>
                </tr>
@@ -90,13 +90,13 @@
                                    {% endif %}
                                </span>
                            {% endif %}
-                            {% if m.linked_orderposition %}
+                            {% for op in m.linked_orderpositions.all %}
                                <span class="helper-display-block">
                                    <span class="fa fa-ticket fa-fw"></span>
-                                    <a href="{% url "control:event.order" event=m.linked_orderposition.order.event.slug organizer=request.organizer.slug code=m.linked_orderposition.order.code %}">
-                                        {{ m.linked_orderposition.order.code }}</a>-{{ m.linked_orderposition.positionid }}
+                                    <a href="{% url "control:event.order" event=op.order.event.slug organizer=request.organizer.slug code=op.order.code %}">
+                                        {{ op.order.code }}</a>-{{ op.positionid }}
                                </span>
-                            {% endif %}
+                            {% endfor %}
                            {% if m.linked_giftcard %}
                                <span class="helper-display-block">
                                    <span class="fa fa-credit-card fa-fw"></span>
@@ -26,7 +26,19 @@
                        <dt>{% trans "Media type" context "reusable_media" %}</dt>
                        <dd>{{ medium.get_type_display }}</dd>
                        <dt>{% trans "Identifier" context "reusable_media" %}</dt>
-                        <dd><code>{{ medium.identifier }}</code></dd>
+                        <dd>
+                            <code id="medium_identifier">{{ medium.identifier }}</code>
+                            <button type="button" class="btn btn-default btn-xs btn-clipboard js-only" data-clipboard-target="#medium_identifier">
+                                <i class="fa fa-clipboard" aria-hidden="true"></i>
+                                <span class="sr-only">{% trans "Copy to clipboard" %}</span>
+                            </button>
+                            {% if medium.type == "barcode" %}
+                            <button type="button" class="btn btn-default btn-xs js-only" data-toggle="qrcode" data-qrcode="{{ medium.identifier }}">
+                                <i class="fa fa-qrcode" aria-hidden="true"></i>
+                                <span class="sr-only">{% trans "Create QR code" %}</span>
+                            </button>
+                            {% endif %}
+                        </dd>
                        <dt>{% trans "Status" %}</dt>
                        <dd>
                            {% if not medium.active %}
@@ -41,34 +53,34 @@
                        <dd>
                            {% if medium.customer %}
                                <span class="helper-display-block">
-                                <span class="fa fa-user fa-fw"></span>
-                                {% if "organizer.customers:read" in request.orgapermset %}
-                                    <a href="{% url "control:organizer.customer" organizer=request.organizer.slug customer=medium.customer.identifier %}">
+                                    <span class="fa fa-user fa-fw"></span>
+                                    {% if "organizer.customers:read" in request.orgapermset %}
+                                        <a href="{% url "control:organizer.customer" organizer=request.organizer.slug customer=medium.customer.identifier %}">
+                                            {{ medium.customer }}
+                                        </a>
+                                    {% else %}
                                        {{ medium.customer }}
-                                    </a>
-                                {% else %}
-                                    {{ medium.customer }}
-                                {% endif %}
-                            </span>
+                                    {% endif %}
+                                </span>
                            {% endif %}
-                            {% if medium.linked_orderposition %}
+                            {% for op in medium.linked_orderpositions.all %}
                                <span class="helper-display-block">
-                                <span class="fa fa-ticket fa-fw"></span>
-                                <a href="{% url "control:event.order" event=medium.linked_orderposition.order.event.slug organizer=request.organizer.slug code=medium.linked_orderposition.order.code %}">
-                                    {{ medium.linked_orderposition.order.code }}</a>-{{ medium.linked_orderposition.positionid }}
-                            </span>
-                            {% endif %}
+                                    <span class="fa fa-ticket fa-fw"></span>
+                                    <a href="{% url "control:event.order" event=op.order.event.slug organizer=request.organizer.slug code=op.order.code %}">
+                                        {{ op.order.code }}</a>-{{ op.positionid }}
+                                </span>
+                            {% endfor %}
                            {% if medium.linked_giftcard %}
                                <span class="helper-display-block">
-                                <span class="fa fa-credit-card fa-fw"></span>
-                                {% if "organizer.giftcards:read" in request.orgapermset %}
-                                    <a href="{% url "control:organizer.giftcard" organizer=request.organizer.slug giftcard=medium.linked_giftcard.id %}">
-                                        {{ medium.linked_giftcard.secret }}
-                                    </a>
-                                {% else %}
-                                    {{ medium.linked_giftcard.secret|slice:":3" }}…
-                                {% endif %}
-                            </span>
+                                    <span class="fa fa-credit-card fa-fw"></span>
+                                    {% if "organizer.giftcards:read" in request.orgapermset %}
+                                        <a href="{% url "control:organizer.giftcard" organizer=request.organizer.slug giftcard=medium.linked_giftcard.id %}">
+                                            {{ medium.linked_giftcard.secret }}
+                                        </a>
+                                    {% else %}
+                                        {{ medium.linked_giftcard.secret|slice:":3" }}…
+                                    {% endif %}
+                                </span>
                            {% endif %}
                        </dd>
                        {% if medium.notes %}
@@ -2,6 +2,7 @@
 {% load i18n %}
 {% load bootstrap3 %}
 {% load getitem %}
+{% load icon %}
 {% block inner %}
    {% if team %}
        <h1>{% trans "Team:" %} {{ team.name }}</h1>
@@ -25,6 +26,18 @@
            <legend>{% trans "Organizer permissions" %}</legend>
            {% bootstrap_field form.all_organizer_permissions layout="control" %}
            <div class="team-permission-groups col-md-9 col-md-offset-3" data-display-dependency="#id_all_organizer_permissions" data-inverse>
+                <p class="text-muted">
+                    {% icon "info-circle" %}
+                    {% blocktrans trimmed %}
+                        Even if a team has no access to a certain category of data, they might still be able to see
+                        parts of this data when it is linked to data they can see.
+                    {% endblocktrans %}
+                    {% blocktrans trimmed %}
+                        For example, someone with access to customer accounts will be able to see some information
+                        about gift cards linked to a customer account, even if they generally can't see gift cards
+                        directly.
+                    {% endblocktrans %}
+                </p>
                {% for f in form.organizer_field_names %}
                    {% bootstrap_field form|getitem:f layout="control" %}
                {% endfor %}
@@ -37,6 +50,17 @@
            {% bootstrap_field form.limit_events layout="control" %}
            {% bootstrap_field form.all_event_permissions layout="control" %}
            <div class="team-permission-groups col-md-9 col-md-offset-3" data-display-dependency="#id_all_event_permissions" data-inverse>
+                <p class="text-muted">
+                    {% icon "info-circle" %}
+                    {% blocktrans trimmed %}
+                        Even if a team has no access to a certain category of data, they might still be able to see
+                        parts of this data when it is linked to data they can see.
+                    {% endblocktrans %}
+                    {% blocktrans trimmed %}
+                        For example, someone with access to orders will be able to see some information about
+                        vouchers used to create an order, even if they generally can't see vouchers directly.
+                    {% endblocktrans %}
+                </p>
                {% for f in form.event_field_names %}
                    {% bootstrap_field form|getitem:f layout="control" %}
                {% endfor %}
@@ -19,9 +19,7 @@
        {% endif %}
    </h1>

-    <script type="application/json" id="editor-data">
-        {{ layout|safe }}
-    </script>
+    {{ layout|json_script:"editor-data" }}
    <div class="row">
        <div class="col-md-9">
            <div class="panel panel-default panel-pdf-editor">
--- a/Show More
+++ b/Show More