python - Can I find all of a certain base model in App Engine? -

Looking at a class-like relationship:

  Class A (DB model): Pass Class B (A): Pass  

Can I get all the base classes? Query:

  models.A.all (). Fetch (1)  

returns an empty list.

Datastore has not supported this kind of polymorphism - but you can use it to do this You can. Instead of the model, the successor from Polymodel and things will behave as much or less as you would expect.