Subevent list: Add meta-data filter (Z#23114466) (#3083)

Co-authored-by: Raphael Michel <michel@rami.io>

src/pretix/control/views/subevents.py

@@ -110,7 +110,7 @@ class SubEventQueryMixin:
 
     @cached_property
     def filter_form(self):
-        return SubEventFilterForm(data=self.request_data, prefix='filter')
+        return SubEventFilterForm(data=self.request_data, prefix='filter', event=self.request.event)
 
 
 class SubEventList(EventPermissionRequiredMixin, PaginationMixin, SubEventQueryMixin, ListView):
@@ -125,6 +125,9 @@ class SubEventList(EventPermissionRequiredMixin, PaginationMixin, SubEventQueryM
     def get_context_data(self, **kwargs):
         ctx = super().get_context_data(**kwargs)
         ctx['filter_form'] = self.filter_form
+        ctx['meta_fields'] = [
+            self.filter_form['meta_{}'.format(p.name)] for p in self.request.organizer.meta_properties.filter(filter_allowed=True)
+        ]
 
         quotas = []
         for s in ctx['subevents']:

src/pretix/control/views/typeahead.py

@@ -48,7 +48,8 @@ from django.utils.translation import gettext as _, pgettext
 
 from pretix.base.models import (
     EventMetaProperty, EventMetaValue, ItemMetaProperty, ItemMetaValue,
-    ItemVariation, ItemVariationMetaValue, Order, Organizer, User, Voucher,
+    ItemVariation, ItemVariationMetaValue, Order, Organizer, SubEventMetaValue,
+    User, Voucher,
 )
 from pretix.control.forms.event import EventWizardCopyForm
 from pretix.control.permissions import (
@@ -743,6 +744,38 @@ def meta_values(request):
     })
 
 
+def subevent_meta_values(request, organizer, event):
+    q = request.GET.get('q')
+    propname = request.GET.get('property')
+
+    matches = SubEventMetaValue.objects.filter(
+        value__icontains=q,
+        property__name=propname,
+        subevent__event_id=request.event.pk,
+    )
+    event_matches = EventMetaValue.objects.filter(
+        value__icontains=q,
+        property__name=propname,
+        event_id=request.event.pk,
+    )
+    defaults = EventMetaProperty.objects.filter(
+        default__icontains=q,
+        name=propname,
+        organizer_id=request.organizer.pk,
+    )
+
+    return JsonResponse({
+        'results': [
+            {'name': v, 'id': v}
+            for v in sorted(
+                set(defaults.values_list('default', flat=True)[:10]) |
+                set(matches.values_list('value', flat=True)[:10]) |
+                set(event_matches.values_list('value', flat=True)[:10])
+            )
+        ]
+    })
+
+
 def item_meta_values(request, organizer, event):
     q = request.GET.get('q')
     propname = request.GET.get('property')