jfinkels/flask-restless — pull request #323 by jbkkd (2014-06-13 17:20:58+00:00)
Title: Removed some usage of _sa_class_manager

1) Removed a usage of `_sa_class_manager` since it didn't represent the full model.
2) When relation doesn't exists in the `_sa_class_manager`, find it elsewhere in the instance.
3) Don't add a hybrid property which is a relation to the `columns`

Fixes issue #319