python - App engine ndb. Query model based on Reference Property -
I have some problems in querying the object while using NDB in the AppEngine framework for I It is very new and I think I understand some important concepts wrong. Here's what I got: I have my model code teacher (ndb.model) from the teacher : Webapp2_extras.appengine.auth.models : User = ndb.StructuredProperty (user) ranking = ndb.FloatProperty (required = true) as you can see, from webapp 2 framework Comes. Then I try to ask some affiliate teacher. I do it like this: def _findTeacher (self, user): t = teacher. Curious (teacher.use == user). Fetch (1) If T: Returns T [0] Else: return Anyone The user coming in the form of this function comes as follows: user_session = self.auth.get_user_by_session () user = Self.auth.store.user_model.get_by_auth_token (user_session ['user_id'], user_session ['token']) [0] However, I get the following error: BadFilterError: invalid filter: non-empty repetitive property can not query for auth_ids I would li...