Google app engine KeyProperty对象没有属性get
我在一个NDB模型类型中放置了一个Google app engine KeyProperty对象没有属性get,google-app-engine,app-engine-ndb,Google App Engine,App Engine Ndb,我在一个NDB模型类型中放置了一个\u post\u put\u hook,这样每当放置该类型的实体时,就会使memcache键无效。此密钥由设置密钥的urlsafe版本组成。但是,当此代码运行时,它表示: Traceback (most recent call last): File "C:\Program Files (x86)\Google\google_appengine\lib\webapp2\webapp2.py", line 1536, in __call__ rv =
\u post\u put\u hook
,这样每当放置该类型的实体时,就会使memcache键无效。此密钥由设置密钥的urlsafe版本组成。但是,当此代码运行时,它表示:
Traceback (most recent call last):
File "C:\Program Files (x86)\Google\google_appengine\lib\webapp2\webapp2.py", line 1536, in __call__
rv = self.handle_exception(request, response, e)
File "C:\Program Files (x86)\Google\google_appengine\lib\webapp2\webapp2.py", line 1530, in __call__
rv = self.router.dispatch(request, response)
File "C:\Program Files (x86)\Google\google_appengine\lib\webapp2\webapp2.py", line 1278, in default_dispatcher
return route.handler_adapter(request, response)
File "C:\Program Files (x86)\Google\google_appengine\lib\webapp2\webapp2.py", line 1102, in __call__
return handler.dispatch()
File "C:\Program Files (x86)\Google\google_appengine\lib\webapp2\webapp2.py", line 572, in dispatch
return self.handle_exception(e, self.app.debug)
File "C:\Program Files (x86)\Google\google_appengine\lib\webapp2\webapp2.py", line 570, in dispatch
return method(*args, **kwargs)
File "U:\Hefner\Dropbox\Public\Projects\GHI\dev\rpc.py", line 68, in get
result = func(*args)
File "U:\Hefner\Dropbox\Public\Projects\GHI\dev\rpc.py", line 154, in pub_refreshSandbox
team_key = s.create.team("Cool Group")
File "U:\Hefner\Dropbox\Public\Projects\GHI\dev\GlobalUtilities.py", line 534, in team
new_team.put()
File "C:\Program Files (x86)\Google\google_appengine\google\appengine\ext\ndb\model.py", line 2902, in _put
return self._put_async(**ctx_options).get_result()
File "C:\Program Files (x86)\Google\google_appengine\google\appengine\ext\ndb\tasklets.py", line 320, in get_result
self.check_success()
File "C:\Program Files (x86)\Google\google_appengine\google\appengine\ext\ndb\tasklets.py", line 315, in check_success
self.wait()
File "C:\Program Files (x86)\Google\google_appengine\google\appengine\ext\ndb\tasklets.py", line 299, in wait
if not ev.run1():
File "C:\Program Files (x86)\Google\google_appengine\google\appengine\ext\ndb\eventloop.py", line 219, in run1
delay = self.run0()
File "C:\Program Files (x86)\Google\google_appengine\google\appengine\ext\ndb\eventloop.py", line 181, in run0
callback(*args, **kwds)
File "C:\Program Files (x86)\Google\google_appengine\google\appengine\ext\ndb\tasklets.py", line 454, in _on_future_completion
self._help_tasklet_along(gen, val)
File "C:\Program Files (x86)\Google\google_appengine\google\appengine\ext\ndb\tasklets.py", line 368, in _help_tasklet_along
self.set_result(result)
File "C:\Program Files (x86)\Google\google_appengine\google\appengine\ext\ndb\tasklets.py", line 264, in set_result
callback(*args, **kwds)
File "U:\Hefner\Dropbox\Public\Projects\GHI\dev\DataModels.py", line 182, in _post_put_hook
tools.expireCache('allteams-' + self.settings.get().websafe)
AttributeError: 'KeyProperty' object has no attribute 'get'
以下是相关的模型类:
class Team(ndb.Expando):
name = ndb.StringProperty()
show_team = ndb.BooleanProperty()
settings = ndb.KeyProperty()
@classmethod
def _post_put_hook(self, future):
memcache.delete('allteams-' + self.settings.get().websafe)
Ideas?在本例中,self.settings不是实际的键,而是Models属性,因为这是一个类方法而不是实例方法。您需要处理未来对象。
以下是文件: 在这种情况下:
@classmethod
def _post_put_hook(self, future):
entitykey = future.get_result()
entity = entitykey.get()
memcache.delete('allteams-' + entity.settings.get().websafe)
不确定
websafe
为您做了什么。可能您指的是entity.settings.urlsafe()
?在本例中,self.settings不是实际的键,而是Models属性,因为这是一个classmethod而不是实例方法。您需要处理未来对象。以下是文件: 在这种情况下:
@classmethod
def _post_put_hook(self, future):
entitykey = future.get_result()
entity = entitykey.get()
memcache.delete('allteams-' + entity.settings.get().websafe)
不确定
websafe
为您做了什么。也许你的意思是entity.settings.urlsafe()
?有效!谢谢抱歉,websafe是我添加的一个简单属性,返回key.urlsafe()。我想将密钥插入到web模板中,但我认为不能在模板中调用函数。无论如何,没关系。好吧,我明白了,在这种情况下最好调用entity.settings.urlsafe(),因为保存rpc调用,代码运行速度会更快。可以在某些模板语言中调用函数,但不能在其他模板语言中调用。所以这取决于你使用的是什么语言。这很有效!谢谢抱歉,websafe是我添加的一个简单属性,返回key.urlsafe()。我想将密钥插入到web模板中,但我认为不能在模板中调用函数。无论如何,没关系。好吧,我明白了,在这种情况下最好调用entity.settings.urlsafe(),因为保存rpc调用,代码运行速度会更快。可以在某些模板语言中调用函数,但不能在其他模板语言中调用。所以这取决于你使用的语言。