Saving related model instance from model method with Flask AppBuilder and SQLAlchemy

python flask flask-sqlalchemy flask-appbuilder

On the docs you have: https://flask-appbuilder.readthedocs.io/en/latest/api.html#flask.ext.appbuilder.base.AppBuilder.get_session

So you can get SQLAlchemy session like this (on your view):

self.appbuilder.get_session