celery & attributes list by product

apps/product/web/api/v1/viewsets/product_api.py

@@ -118,11 +118,26 @@ class ProductViewSet(viewsets.ModelViewSet):
 class AttributeViewSet(viewsets.ModelViewSet):
     """ attributes of reference product """  #
 
-    queryset = product_models.Attribute.objects.all()
+    queryset = product_models.Attribute.objects.select_related('product').all()
     serializer_class = product_serializers.AttributeSerializer
     filter_backends = [filters.SearchFilter]
     search_fields = ['name']
 
+    @action(
+        methods=['get'],
+        detail=True,
+        url_path='by_product',
+        url_name='by_product',
+        name='by_product'
+    )
+    def get_attributes_by_product(self, request, pk=None):
+        """ get attributes by product with global ones """
+
+        attributes = self.queryset.filter(Q(is_global=True) | Q(product__id=pk))
+
+        serializer = self.serializer_class(attributes, many=True)
+        return Response(serializer.data)
+
     @action(
         methods=['put'],
         detail=True,