Apply suggestions from code review

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

src/pretix/api/serializers/event.py

@@ -971,15 +971,15 @@ class ItemMetaPropertiesSerializer(I18nAwareModelSerializer):
         fields = ('id', 'name', 'default', 'required', 'allowed_values')
 
 
-def prefetch_by_id(items, manager, id_attr, id_filter, target_attr):
+def prefetch_by_id(items, qs, id_attr, id_filter, target_attr):
     """
     Prefetches a related object on each item in the given list of items by searching by id or another
-    unique field. The id value is read from the attribute on item specified in `id_attr`, searched on manager by the
+    unique field. The id value is read from the attribute on item specified in `id_attr`, searched on queryset `qs` by the
     field specified in `id_filter`, and the resulting prefetched model object is stored into `target_attr` on the item.
     """
     ids = [getattr(item, id_attr) for item in items if getattr(item, id_attr)]
     if ids:
-        result = manager.order_by(id_filter).distinct(id_filter).in_bulk(id_list=ids, field_name=id_filter)
+        result = qs.order_by(id_filter).distinct(id_filter).in_bulk(id_list=ids, field_name=id_filter)
         for item in items:
             setattr(item, target_attr, result.get(getattr(item, id_attr)))
 
@@ -993,12 +993,12 @@ class SeatSerializer(I18nAwareModelSerializer):
         model = Seat
         read_only_fields = (
             'id', 'subevent', 'zone_name', 'row_name', 'row_label',
-            'seat_number', 'seat_label', 'seat_guid', 'product', 'sorting_rank', 'x', 'y',
+            'seat_number', 'seat_label', 'seat_guid', 'product',
             'orderposition', 'cartposition', 'voucher',
         )
         fields = (
             'id', 'subevent', 'zone_name', 'row_name', 'row_label',
-            'seat_number', 'seat_label', 'seat_guid', 'product', 'blocked', 'sorting_rank', 'x', 'y',
+            'seat_number', 'seat_label', 'seat_guid', 'product', 'blocked',
             'orderposition', 'cartposition', 'voucher',
         )
 

src/pretix/api/views/event.py

@@ -697,8 +697,6 @@ class SeatViewSet(ConditionalListView, viewsets.ModelViewSet):
         ctx['order_context'] = {
             'event': self.request.event,
             'pdf_data': None,
-            'include': self.request.query_params.getlist('order_include'),
-            'exclude': self.request.query_params.getlist('order_exclude'),
         }
         return ctx