add a condition to not add the cell if it's quantity is None or null

git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@18595 20353a03-c40f-0410-a6d1-a30d3c3de9de

product/ERP5/Document/PaySheetTransaction.py

@@ -487,6 +487,7 @@ class PaySheetTransaction(Invoice):
         quantity = cell_dict['quantity']
         price = cell_dict['price']
 
+        if quantity:
           cell_list.append(cell_dict)
 
           # update the base_participation
@@ -558,7 +559,7 @@ class PaySheetTransaction(Invoice):
       id_list = model_reference_dict[key]
       model = self.getPortalObject().restrictedTraverse(key)
       if model is None:
-        LOG("copyInheritanceSubObjects,", 0, "can't find model %s" % key)
+        LOG("getInheritedObjectValueList :", 0, "can't find model %s" % key)
 
       for id in id_list:
         object = model._getOb(id)