From c921ca4e65e7f5155ad35ee969d7e0f02b988b3a Mon Sep 17 00:00:00 2001
From: Raphael Michel <mail@raphaelmichel.de>
Date: Wed, 19 Oct 2022 15:32:29 +0200
Subject: [PATCH] API: Fix crash when sorting orderpositions by attendee name

---
 src/pretix/api/views/order.py | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/pretix/api/views/order.py b/src/pretix/api/views/order.py
index 5135fb1e65..c0c79796ca 100644
--- a/src/pretix/api/views/order.py
+++ b/src/pretix/api/views/order.py
@@ -61,6 +61,7 @@ from pretix.api.serializers.orderchange import (
     OrderPositionCreateForExistingOrderSerializer,
     OrderPositionInfoPatchSerializer,
 )
+from pretix.api.views import RichOrderingFilter
 from pretix.base.i18n import language
 from pretix.base.models import (
     CachedCombinedTicket, CachedTicket, Checkin, Device, EventMetaValue,
@@ -930,7 +931,7 @@ with scopes_disabled():
 class OrderPositionViewSet(viewsets.ModelViewSet):
     serializer_class = OrderPositionSerializer
     queryset = OrderPosition.all.none()
-    filter_backends = (DjangoFilterBackend, OrderingFilter)
+    filter_backends = (DjangoFilterBackend, RichOrderingFilter)
     ordering = ('order__datetime', 'positionid')
     ordering_fields = ('order__code', 'order__datetime', 'positionid', 'attendee_name', 'order__status',)
     filterset_class = OrderPositionFilter