Fix not allowing program times on event series (API/copy) (#5595)

* Fix not allowing program times on event series (API/copy)

* Return 400 when reading endpoint in event series

* add docs program times not available on event series

* fix isort

src/pretix/api/serializers/item.py

@@ -241,6 +241,12 @@ class ItemProgramTimeSerializer(serializers.ModelSerializer):
         if start > end:
             raise ValidationError(_("The program end must not be before the program start."))
 
+        event = self.context['event']
+        if event.has_subevents:
+            raise ValidationError({
+                _("You cannot use program times on an event series.")
+            })
+
         return data
 
 

src/pretix/api/views/item.py

@@ -40,7 +40,7 @@ from django_filters.rest_framework import DjangoFilterBackend, FilterSet
 from django_scopes import scopes_disabled
 from rest_framework import viewsets
 from rest_framework.decorators import action
-from rest_framework.exceptions import PermissionDenied
+from rest_framework.exceptions import PermissionDenied, ValidationError
 from rest_framework.response import Response
 
 from pretix.api.pagination import TotalOrderingFilter
@@ -293,6 +293,8 @@ class ItemProgramTimeViewSet(viewsets.ModelViewSet):
         return get_object_or_404(Item, pk=self.kwargs['item'], event=self.request.event)
 
     def get_queryset(self):
+        if self.request.event.has_subevents:
+            raise ValidationError('You cannot use program times on an event series.')
         return self.item.program_times.all()
 
     def get_serializer_context(self):

src/pretix/base/models/event.py

@@ -990,10 +990,11 @@ class Event(EventMixin, LoggedModel):
                 ia.bundled_variation = variation_map[ia.bundled_variation.pk]
             ia.save(force_insert=True)
 
-        for ipt in ItemProgramTime.objects.filter(item__event=other).prefetch_related('item'):
-            ipt.pk = None
-            ipt.item = item_map[ipt.item.pk]
-            ipt.save(force_insert=True)
+        if not self.has_subevents and not other.has_subevents:
+            for ipt in ItemProgramTime.objects.filter(item__event=other).prefetch_related('item'):
+                ipt.pk = None
+                ipt.item = item_map[ipt.item.pk]
+                ipt.save(force_insert=True)
 
         quota_map = {}
         for q in Quota.objects.filter(event=other, subevent__isnull=True).prefetch_related('items', 'variations'):

src/pretix/base/models/items.py

@@ -2311,6 +2311,8 @@ class ItemProgramTime(models.Model):
     end = models.DateTimeField(verbose_name=_("End"))
 
     def clean(self):
+        if self.item.event.has_subevents:
+            raise ValidationError(_("You cannot use program times on an event series."))
         self.clean_start_end(start=self.start, end=self.end)
         super().clean()