filter on query instead of list

Author: Johnetordoff

api/subscriptions/views.py

@@ -94,7 +94,7 @@ def get_queryset(self):
         # Apply manual filter for legacy_id if requested
         filter_id = self.request.query_params.get('filter[id]')
         if filter_id:
-            qs = [obj for obj in qs if obj.legacy_id == filter_id]
+            qs = qs.filter(legacy_id=filter_id)
             # convert to list comprehension because legacy_id is an annotation, not in DB
 
         return qs