fix: change search fields for Activities

apps/activity/api/views.py

@@ -30,16 +30,12 @@ class ActivityViewSet(ReadProtectedModelViewSet):
     The djangorestframework plugin will get all `Activity` objects, serialize it to JSON with the given serializer,
     then render it on /api/activity/activity/
     """
-    queryset = Activity.objects.order_by('id')
+    queryset = Activity.objects.order_by('-date_start')
     serializer_class = ActivitySerializer
     filter_backends = [DjangoFilterBackend, RegexSafeSearchFilter]
     filterset_fields = ['name', 'description', 'activity_type', 'location', 'creater', 'organizer', 'attendees_club',
                         'date_start', 'date_end', 'valid', 'open', ]
-    search_fields = ['$name', '$description', '$location', '$creater__last_name', '$creater__first_name',
-                     '$creater__email', '$creater__note__alias__name', '$creater__note__alias__normalized_name',
-                     '$organizer__name', '$organizer__email', '$organizer__note__alias__name',
-                     '$organizer__note__alias__normalized_name', '$attendees_club__name', '$attendees_club__email',
-                     '$attendees_club__note__alias__name', '$attendees_club__note__alias__normalized_name', ]
+    search_fields = ['$name', '$description', '$location', '$organizer__name', ]
 
 
 class GuestViewSet(ReadProtectedModelViewSet):