use getQuantity() instead of accessing quantity directly (returns the default

property value instead of raising AttributeError)


git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@16768 20353a03-c40f-0410-a6d1-a30d3c3de9de

product/ERP5/Document/PackingList.py

@@ -112,8 +112,8 @@ class PackingList(Delivery):
           'has_cell_content': 0,
         }
         container_mvt_list = self.portal_catalog(**query_kw)
-        packed_quantity = sum([x.quantity for x in container_mvt_list \
-                               if x.quantity is not None])
+        packed_quantity = sum([x.getQuantity() for x in container_mvt_list \
+                               if x.getQuantity() is not None])
 
         if quantity != packed_quantity:
           return 0