Add sub-events and relative date settings (#503)

* Data model

* little crud

* SubEventItemForm etc

* Drop SubEventItem.active, quota editor

* Fix failing tests

* First frontend stuff

* Addons form stuff

* Quota calculation

* net price display on EventIndex

* Add tests, solve some bugs

* Correct quota selection in more places, consolidate pricing logic

* Fix failing quota tests

* Fix TypeError

* Add tests for checkout

* Fixed a bug in QuotaForm

* Prevent immutable cart if a quota was removed from an item

* Add tests for pricing

* Handle waiting list

* Filter in check-in list

* Fixed import lost in rebase

* Fix waiting list widget

* Voucher management

* Voucher redemption

* Fix broken tests

* Add subevents to OrderChangeManager

* Create a subevent during event creation

* Fix bulk voucher creation

* Introduce subevent.active

* Copy from for subevents

* Show active in list

* ICal download for subevents

* Check start and end of presale

* Failing tests / show cart logic

* Test

* Rebase migrations

* REST API integration of sub-events

* Integrate quota calculation into the traditional quota form

* Make subevent argument to add_position optional

* Log-display foo

* pretixdroid and subevents

* Filter by subevent

* Add more tests

* Some mor tests

* Rebase fixes

* More tests

* Relative dates

* Restrict selection in relative datetime widgets

* Filter subevent list

* Re-label has_subevents

* Rebase fixes, subevents in calendar view

* Performance and caching issues

* Refactor calendar templates

* Permission tests

* Calendar fixes and month selection

* subevent selection

* Rename subevents to dates

* Add tests for calendar views

src/pretix/api/views/event.py

@@ -1,7 +1,9 @@
-from rest_framework import viewsets
+from django_filters.rest_framework import DjangoFilterBackend, FilterSet
+from rest_framework import filters, viewsets
 
-from pretix.api.serializers.event import EventSerializer
-from pretix.base.models import Event
+from pretix.api.serializers.event import EventSerializer, SubEventSerializer
+from pretix.base.models import Event, ItemCategory
+from pretix.base.models.event import SubEvent
 
 
 class EventViewSet(viewsets.ReadOnlyModelViewSet):
@@ -12,3 +14,21 @@ class EventViewSet(viewsets.ReadOnlyModelViewSet):
 
     def get_queryset(self):
         return self.request.organizer.events.all()
+
+
+class SubEventFilter(FilterSet):
+    class Meta:
+        model = SubEvent
+        fields = ['active']
+
+
+class SubEventViewSet(viewsets.ReadOnlyModelViewSet):
+    serializer_class = SubEventSerializer
+    queryset = ItemCategory.objects.none()
+    filter_backends = (DjangoFilterBackend, filters.OrderingFilter)
+    filter_class = SubEventFilter
+
+    def get_queryset(self):
+        return self.request.event.subevents.prefetch_related(
+            'subeventitem_set', 'subeventitemvariation_set'
+        )

src/pretix/api/views/item.py

@@ -58,10 +58,17 @@ class QuestionViewSet(viewsets.ReadOnlyModelViewSet):
         return self.request.event.questions.prefetch_related('options').all()
 
 
+class QuotaFilter(FilterSet):
+    class Meta:
+        model = Quota
+        fields = ['subevent']
+
+
 class QuotaViewSet(viewsets.ReadOnlyModelViewSet):
     serializer_class = QuotaSerializer
     queryset = Quota.objects.none()
-    filter_backends = (OrderingFilter,)
+    filter_backends = (DjangoFilterBackend, OrderingFilter,)
+    filter_class = QuotaFilter
     ordering_fields = ('id', 'size')
     ordering = ('id',)
 

src/pretix/api/views/order.py

@@ -84,7 +84,7 @@ class OrderPositionFilter(FilterSet):
     class Meta:
         model = OrderPosition
         fields = ['item', 'variation', 'attendee_name', 'secret', 'order', 'order__status', 'has_checkin',
-                  'addon_to']
+                  'addon_to', 'subevent']
 
 
 class OrderPositionViewSet(viewsets.ReadOnlyModelViewSet):

src/pretix/api/views/voucher.py

@@ -16,7 +16,7 @@ class VoucherFilter(FilterSet):
     class Meta:
         model = Voucher
         fields = ['code', 'max_usages', 'redeemed', 'block_quota', 'allow_ignore_quota',
-                  'price_mode', 'value', 'item', 'variation', 'quota', 'tag']
+                  'price_mode', 'value', 'item', 'variation', 'quota', 'tag', 'subevent']
 
     def filter_active(self, queryset, name, value):
         if value:

src/pretix/api/views/waitinglist.py

@@ -15,7 +15,7 @@ class WaitingListFilter(FilterSet):
 
     class Meta:
         model = WaitingListEntry
-        fields = ['item', 'variation', 'email', 'locale', 'has_voucher']
+        fields = ['item', 'variation', 'email', 'locale', 'has_voucher', 'subevent']
 
 
 class WaitingListViewSet(viewsets.ReadOnlyModelViewSet):