Python 为什么可以';我不能按用户属性查询吗?
我有一个应用程序,用所有者的电子邮件存储实体。My models.py的外观如下所示:Python 为什么可以';我不能按用户属性查询吗?,python,google-app-engine,google-cloud-datastore,Python,Google App Engine,Google Cloud Datastore,我有一个应用程序,用所有者的电子邮件存储实体。My models.py的外观如下所示: from google.appengine.ext import db from google.appengine.api import users class GenericModel(db.Model): '''GenericModel is inherited by other model definitions.''' DateAdded = db.DateTimeProperty(
from google.appengine.ext import db
from google.appengine.api import users
class GenericModel(db.Model):
'''GenericModel is inherited by other model definitions.'''
DateAdded = db.DateTimeProperty(auto_now_add = True)
owner = db.UserProperty()
class CASentry(GenericModel):
description = db.TextProperty()
date = db.DateProperty()
hours = db.FloatProperty()
location = db.StringProperty()
test@example.com
[<models.CASentry object at 0x123456>]
当我从开发服务器上的交互式控制台运行此命令时:
from google.appengine.ext import db
t = db.GqlQuery('''SELECT * FROM CASentry''').fetch(1)[0]
print t.owner
t = db.GqlQuery('''SELECT * FROM CASentry where owner = 'test@example.com' ''').fetch(1)
print t
我明白了:
test@example.com
[]
我觉得我期待着这样的事情:
from google.appengine.ext import db
from google.appengine.api import users
class GenericModel(db.Model):
'''GenericModel is inherited by other model definitions.'''
DateAdded = db.DateTimeProperty(auto_now_add = True)
owner = db.UserProperty()
class CASentry(GenericModel):
description = db.TextProperty()
date = db.DateProperty()
hours = db.FloatProperty()
location = db.StringProperty()
test@example.com
[<models.CASentry object at 0x123456>]
test@example.com
[]
有人看到我的代码有问题吗?您应该提供
用户
而不是字符串:
t = db.GqlQuery("SELECT * FROM CASentry where owner = :owner", owner=User(email="test@example.com")).fetch(1)
您可以在GQL中直接转换为用户:
SELECT * FROM CASentry where owner = USER('test@example.com')