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ユーザーモデルをインスタンス化しようとすると、AssertErrorが発生します。以下のスタックトレースでは、リクエストハンドラへのリクエストのディスパッチを省略しています。

File "/Users/frederikcreemers/jsbeast/users.py", line 68, in get
    User(nickname=nickname,user=users.get_current_user()).put()
File "/Applications/GoogleAppEngineLauncher.app/Contents/Resources/GoogleAppEngine-default.bundle/Contents/Resources/google_appengine/google/appengine/ext/ndb/model.py", line 2926, in _put
    return self._put_async(**ctx_options).get_result()
File "/Applications/GoogleAppEngineLauncher.app/Contents/Resources/GoogleAppEngine-default.bundle/Contents/Resources/google_appengine/google/appengine/ext/ndb/tasklets.py", line 322, in get_result
    self.check_success()
File "/Applications/GoogleAppEngineLauncher.app/Contents/Resources/GoogleAppEngine-default.bundle/Contents/Resources/google_appengine/google/appengine/ext/ndb/tasklets.py", line 317, in check_success
    self.wait()
File "/Applications/GoogleAppEngineLauncher.app/Contents/Resources/GoogleAppEngine-default.bundle/Contents/Resources/google_appengine/google/appengine/ext/ndb/tasklets.py", line 301, in wait
    if not ev.run1():
File "/Applications/GoogleAppEngineLauncher.app/Contents/Resources/GoogleAppEngine-default.bundle/Contents/Resources/google_appengine/google/appengine/ext/ndb/eventloop.py", line 219, in run1
    delay = self.run0()
File "/Applications/GoogleAppEngineLauncher.app/Contents/Resources/GoogleAppEngine-default.bundle/Contents/Resources/google_appengine/google/appengine/ext/ndb/eventloop.py", line 181, in run0
    callback(*args, **kwds)
File "/Applications/GoogleAppEngineLauncher.app/Contents/Resources/GoogleAppEngine-default.bundle/Contents/Resources/google_appengine/google/appengine/ext/ndb/context.py", line 170, in _finished_callback
    fut.check_success()
File "/Applications/GoogleAppEngineLauncher.app/Contents/Resources/GoogleAppEngine-default.bundle/Contents/Resources/google_appengine/google/appengine/ext/ndb/tasklets.py", line 362, in _help_tasklet_along
    value = gen.send(val)
File "/Applications/GoogleAppEngineLauncher.app/Contents/Resources/GoogleAppEngine-default.bundle/Contents/Resources/google_appengine/google/appengine/ext/ndb/context.py", line 268, in _put_tasklet
    keys = yield self._conn.async_put(options, datastore_entities)
File "/Applications/GoogleAppEngineLauncher.app/Contents/Resources/GoogleAppEngine-default.bundle/Contents/Resources/google_appengine/google/appengine/datastore/datastore_rpc.py", line 1550, in async_put
    pbs = [self.__adapter.entity_to_pb(entity) for entity in entities]
File "/Applications/GoogleAppEngineLauncher.app/Contents/Resources/GoogleAppEngine-default.bundle/Contents/Resources/google_appengine/google/appengine/ext/ndb/model.py", line 548, in entity_to_pb
    pb = ent._to_pb()
File "/Applications/GoogleAppEngineLauncher.app/Contents/Resources/GoogleAppEngine-default.bundle/Contents/Resources/google_appengine/google/appengine/ext/ndb/model.py", line 2719, in _to_pb
    prop._serialize(self, pb)
File "/Applications/GoogleAppEngineLauncher.app/Contents/Resources/GoogleAppEngine-default.bundle/Contents/Resources/google_appengine/google/appengine/ext/ndb/model.py", line 1245, in _serialize
    values = self._get_base_value_unwrapped_as_list(entity)
File "/Applications/GoogleAppEngineLauncher.app/Contents/Resources/GoogleAppEngine-default.bundle/Contents/Resources/google_appengine/google/appengine/ext/ndb/model.py", line 1034, in _get_base_value_unwrapped_as_list
    wrapped = self._get_base_value(entity)
File "/Applications/GoogleAppEngineLauncher.app/Contents/Resources/GoogleAppEngine-default.bundle/Contents/Resources/google_appengine/google/appengine/ext/ndb/model.py", line 1022, in _get_base_value
    return self._apply_to_values(entity, self._opt_call_to_base_type)
File "/Applications/GoogleAppEngineLauncher.app/Contents/Resources/GoogleAppEngine-default.bundle/Contents/Resources/google_appengine/google/appengine/ext/ndb/model.py", line 1186, in _apply_to_values
    newvalue = function(value)
File "/Applications/GoogleAppEngineLauncher.app/Contents/Resources/GoogleAppEngine-default.bundle/Contents/Resources/google_appengine/google/appengine/ext/ndb/model.py", line 1065, in _opt_call_to_base_type
    value = _BaseValue(self._call_to_base_type(value))
File "/Applications/GoogleAppEngineLauncher.app/Contents/Resources/GoogleAppEngine-default.bundle/Contents/Resources/google_appengine/google/appengine/ext/ndb/model.py", line 599, in __init__
    assert not isinstance(b_val, list), repr(b_val)
AssertionError: []

これが発生するコードは次のようになります。

class LoginHandler(webapp2.RequestHandler):
    def get(self):
        url = self.request.get('url')

        if not url:
            url = "/"
        if User.current():
            self.redirect(url)
        else:
            if users.get_current_user():
                nickname = self.request.get("nickname")
                if(not nickname):
                    self.response.out.write(views.render("nickname"))
                    return
                else:
                    errors = []
                    if len(nickname) < 3:
                        errors.append("Your nickname should be at least 3 characters long.")

                    if(len(nickname) > 15):
                        errors.append("Your nickname should not be longer than 15 characters.")

                    import re
                    if not re.match(r"[0-9a-zA-Z_\.]+$",nickname):
                        errors.append("Your nickname can only contain small and capital letters, numbers, underscores and dots.")

                    if len(errors) == 0 and User.by_nickname(nickname):
                        errors.append("The name "+nickname+" is already in use.")


                    if len(errors) == 0:
                        import logging
                        User(nickname=nickname,user=users.get_current_user()).put()
                        self.redirect(url)
                    else:
                        self.response.out.write(views.render('nickname',{'errors':errors}))
                        return
            else:
                self.redirect(users.create_login_url("/user/login",federated_identity=self.request.get('provider')))

google.appengine.api.usersそのモジュールからUserobjecvtをインポートしても、users名前空間に保持されているため、競合が発生することはありません。

これは、ユーザーモデルがどのように見えるかです。

class User(ndb.Model):
nickname = ndb.StringProperty()
email = ndb.StringProperty()
user = ndb.UserProperty()
num_solved_problems = ndb.ComputedProperty(lambda self: problems.Attempt.query().filter(problems.Attempt.user == self.user,problems.Attempt.correct == True).count())
solved_problems = ndb.ComputedProperty(lambda self:problems.Attempt.query().filter(problems.Attempt.user == self.user,problems.Attempt.correct == True).fetch())

@classmethod
def current(cls):
    if not users.get_current_user():
        return None
    return cls.query().filter(User.user == users.get_current_user()).get()

@classmethod
def by_nickname(cls,nickname):
        return cls.query().filter(User.nickname == nickname).get()
4

1 に答える 1

3

私の推測では、fetch（）はリストを返すため、ComputedPropertysolved_problemsはrepeated=Trueと言う必要があります。

PS。あなたのせいではありませんが、SOが水平スクロールバーの表示を主張する場合、コードサンプルを読むのは困難です。

于 2012-05-29T01:19:29.093 に答える