I wanted to ask if there is a direct and efficient way to get the
child of a parent entity.
I am modelling a follower/ following relationship(like twitter). So I
have a user model and a message model.
I have a Follower and Following model which have a user model as a parent.
So whenever a user writes a message(or say tweet), all his followers
should be able to get that.
In this case I need to figure out who are the followers of the
user(who sends a message).
Any help is greatly appreciated
Use ancestor queries. https://developers.google.com/appengine/docs/python/datastore/queryclass#Query_ancestor
Or
https://developers.google.com/appengine/docs/python/ndb/queries#ancestor