From f6ab4195c436fe3b70a06665cd5b171bd2cfd530 Mon Sep 17 00:00:00 2001
From: Maximilian Richt <richt@pretix.eu>
Date: Mon, 1 Jun 2026 09:58:32 +0200
Subject: [PATCH] Use media_policy from item, not as a checkinrpc parameter

---
 src/pretix/api/serializers/checkin.py | 1 -
 src/pretix/api/views/checkin.py       | 6 ++----
 src/pretix/base/services/media.py     | 3 ++-
 3 files changed, 4 insertions(+), 6 deletions(-)

diff --git a/src/pretix/api/serializers/checkin.py b/src/pretix/api/serializers/checkin.py
index 765e444fee..f26f03945e 100644
--- a/src/pretix/api/serializers/checkin.py
+++ b/src/pretix/api/serializers/checkin.py
@@ -90,7 +90,6 @@ class CheckinRPCRedeemInputSerializer(serializers.Serializer):
     answers = serializers.JSONField(required=False, allow_null=True)
     media_type = serializers.ChoiceField(required=False, choices=MEDIA_TYPES)
     media_identifier = serializers.CharField(required=False)
-    media_policy = serializers.ChoiceField(required=False, choices=Item.MEDIA_POLICIES)
     media_action = serializers.ChoiceField(required=False, choices=[
         ('append', 'append'),
         ('replace', 'replace'),
diff --git a/src/pretix/api/views/checkin.py b/src/pretix/api/views/checkin.py
index f1e2baceeb..ff89f3b575 100644
--- a/src/pretix/api/views/checkin.py
+++ b/src/pretix/api/views/checkin.py
@@ -457,7 +457,7 @@ def _checkin_list_position_queryset(checkinlists, ignore_status=False, ignore_pr
 def _redeem_process(*, checkinlists, raw_barcode, answers_data, datetime, force, checkin_type, ignore_unpaid, nonce,
                     untrusted_input, user, auth, expand, pdf_data, request, questions_supported, canceled_supported,
                     source_type='barcode', legacy_url_support=False, simulate=False, gate=None, use_order_locale=False,
-                    media_type=None, media_identifier=None, media_policy=None, media_action=None):
+                    media_type=None, media_identifier=None, media_action=None):
     if not checkinlists:
         raise ValidationError('No check-in list passed.')
 
@@ -805,13 +805,12 @@ def _redeem_process(*, checkinlists, raw_barcode, answers_data, datetime, force,
         locale = op.order.event.settings.locale
     with language(locale):
         try:
-            if all(k is not None for k in [media_type, media_identifier, media_policy, media_action]) and not media:
+            if all(k is not None for k in [media_type, media_identifier, media_action]) and not media:
                 with transaction.atomic():
                     media = perform_media_exchange(
                         organizer=request.organizer,
                         media_type=media_type,
                         media_identifier=media_identifier,
-                        media_policy=media_policy,
                         media_action=media_action,
                         op=op,
                     )
@@ -1079,7 +1078,6 @@ class CheckinRPCRedeemView(views.APIView):
             legacy_url_support=False,
             media_type=s.validated_data.get('media_type'),
             media_identifier=s.validated_data.get('media_identifier'),
-            media_policy=s.validated_data.get('media_policy'),
             media_action=s.validated_data.get('media_action'),
         )
 
diff --git a/src/pretix/base/services/media.py b/src/pretix/base/services/media.py
index 6547963e30..ca3f7f9650 100644
--- a/src/pretix/base/services/media.py
+++ b/src/pretix/base/services/media.py
@@ -72,8 +72,9 @@ def get_keysets_for_organizer(organizer):
     return sets
 
 
-def perform_media_exchange(organizer, media_type, media_identifier, media_policy, media_action, op):
+def perform_media_exchange(organizer, media_type, media_identifier, media_action, op):
     medium = None
+    media_policy = op.item.media_policy
 
     if media_policy in [Item.MEDIA_POLICY_REUSE, Item.MEDIA_POLICY_REUSE_OR_NEW]:
         try: