Add event meta data fields to order search form

src/pretix/control/forms/filter.py

@@ -349,16 +349,34 @@ class OrderSearchFilterForm(OrderFilterForm):
     )
 
     def __init__(self, *args, **kwargs):
-        request = kwargs.pop('request')
+        self.request = kwargs.pop('request')
         super().__init__(*args, **kwargs)
-        if request.user.has_active_staff_session(request.session.session_key):
+        if self.request.user.has_active_staff_session(self.request.session.session_key):
             self.fields['organizer'].queryset = Organizer.objects.all()
         else:
             self.fields['organizer'].queryset = Organizer.objects.filter(
-                pk__in=request.user.teams.values_list('organizer', flat=True)
+                pk__in=self.request.user.teams.values_list('organizer', flat=True)
             )
         self.fields['provider'].choices += get_all_payment_providers()
 
+        seen = set()
+        for p in self.meta_properties.all():
+            if p.name in seen:
+                continue
+            seen.add(p.name)
+            self.fields['meta_{}'.format(p.name)] = forms.CharField(
+                label=p.name,
+                required=False,
+                widget=forms.TextInput(
+                    attrs={
+                        'data-typeahead-url': reverse('control:events.meta.typeahead') + '?' + urlencode({
+                            'property': p.name,
+                            'organizer': ''
+                        })
+                    }
+                )
+            )
+
     def filter_qs(self, qs):
         fdata = self.cleaned_data
         qs = super().filter_qs(qs)
@@ -366,8 +384,42 @@ class OrderSearchFilterForm(OrderFilterForm):
         if fdata.get('organizer'):
             qs = qs.filter(event__organizer=fdata.get('organizer'))
 
+        filters_by_property_name = {}
+        for i, p in enumerate(self.meta_properties):
+            d = fdata.get('meta_{}'.format(p.name))
+            if d:
+                emv_with_value = EventMetaValue.objects.filter(
+                    event=OuterRef('event_id'),
+                    property__pk=p.pk,
+                    value=d
+                )
+                emv_with_any_value = EventMetaValue.objects.filter(
+                    event=OuterRef('event_id'),
+                    property__pk=p.pk,
+                )
+                qs = qs.annotate(**{'attr_{}'.format(i): Exists(emv_with_value)})
+                if p.name in filters_by_property_name:
+                    filters_by_property_name[p.name] |= Q(**{'attr_{}'.format(i): True})
+                else:
+                    filters_by_property_name[p.name] = Q(**{'attr_{}'.format(i): True})
+                if p.default == d:
+                    qs = qs.annotate(**{'attr_{}_any'.format(i): Exists(emv_with_any_value)})
+                    filters_by_property_name[p.name] |= Q(**{
+                        'attr_{}_any'.format(i): False, 'event__organizer_id': p.organizer_id
+                    })
+        for f in filters_by_property_name.values():
+            qs = qs.filter(f)
+
         return qs
 
+    @cached_property
+    def meta_properties(self):
+        # We ignore superuser permissions here. This is intentional – we do not want to show super
+        # users a form with all meta properties ever assigned.
+        return EventMetaProperty.objects.filter(
+            organizer_id__in=self.request.user.teams.values_list('organizer', flat=True)
+        )
+
 
 class SubEventFilterForm(FilterForm):
     orders = {