Add filter for category to the `APIShowViewSet`

program/views.py

@@ -323,6 +323,9 @@ class APIShowViewSet(viewsets.ModelViewSet):
         if type_ := self.request.query_params.get('type'):
             shows = shows.filter(type__in=[int(type_)])
 
+        if category := self.request.query_params.get('category'):
+            shows = shows.filter(category__in=[int(category)])
+
         if topic := self.request.query_params.get('topic'):
             shows = shows.filter(topic__in=[int(topic)])