API: Fix subevent_before/after on organizer-level order view

src/pretix/api/views/order.py

@@ -116,12 +116,16 @@ with scopes_disabled():
 
         @scopes_disabled()
         def subevent_after_qs(self, qs, name, value):
+            if getattr(self.request, 'event', None):
+                subevents = self.request.event.subevents
+            else:
+                subevents = SubEvent.objects.filter(event__organizer=self.request.organizer)
+
             qs = qs.filter(
                 pk__in=Subquery(
                     OrderPosition.all.filter(
-                        subevent_id__in=SubEvent.objects.filter(
+                        subevent_id__in=subevents.filter(
                             Q(date_to__gt=value) | Q(date_from__gt=value, date_to__isnull=True),
-                            event=self.request.event
                         ).values_list('id'),
                     ).values_list('order_id')
                 )
@@ -129,12 +133,16 @@ with scopes_disabled():
             return qs
 
         def subevent_before_qs(self, qs, name, value):
+            if getattr(self.request, 'event', None):
+                subevents = self.request.event.subevents
+            else:
+                subevents = SubEvent.objects.filter(event__organizer=self.request.organizer)
+
             qs = qs.filter(
                 pk__in=Subquery(
                     OrderPosition.all.filter(
-                        subevent_id__in=SubEvent.objects.filter(
+                        subevent_id__in=subevents.filter(
                             Q(date_from__lt=value),
-                            event=self.request.event
                         ).values_list('id'),
                     ).values_list('order_id')
                 )

src/tests/api/test_orders.py

@@ -498,6 +498,10 @@ def test_organizer_level(token_client, organizer, team, event, event2, order, or
     assert resp.status_code == 200
     assert len(resp.data['results']) == 2
 
+    resp = token_client.get('/api/v1/organizers/{}/orders/?subevent_after=2020-01-01T00:00:00Z'.format(organizer.slug))
+    assert resp.status_code == 200
+    assert len(resp.data['results']) == 0
+
     resp = token_client.get('/api/v1/organizers/{}/orders/FOO/'.format(organizer.slug))
     assert resp.status_code == 200