多对多关系 +谷歌数据存储 + Python

Question

给出以下日志：

Restaurant = <persistence.model.Restaurant object at 0x3913c01e89e78a20>
Review Content = This is my first comment...
User[0] = <persistence.model.User object at 0x3913c01e89e780a0>

和以下代码：

class RestaurantReview(db.Model):
    owned_by = db.ReferenceProperty(Restaurant, required=True, collection_name='restaurant')
    written_by = db.ReferenceProperty(User, required=True, collection_name='user')
    content = db.StringProperty(required=True)
    date = db.DateTimeProperty(auto_now_add=True)

当我尝试创建 RestaurantReview 实例时，它永远不会工作：

RestaurantReview(owned_by=restaurant, written_by=user[0], content=restaurant_review_content.__str__()).put()    

编辑 知道发生了什么吗？它不断抛出我设置的自定义错误。

try:

        RestaurantReview(owned_by=restaurant, written_by=user[0], content=restaurant_review_content.__str__()).put()
    except:
        logging.error('CUSTOM ERROR: Review for restaurant has not been added')

Answer 1

我建议通过调用raise来重新抛出错误

try:
    RestaurantReview(owned_by=restaurant, written_by=user[0], content=restaurant_review_content.__str__()).put()
except:
    logging.error('CUSTOM ERROR: Review for restaurant has not been added')
    raise