Make available an option to automatically import all the DeclarativeBase subclasses into model package about tg2

[csmall]

Would this solve the circular dependency nightmare I have with the model
objects? Alternatively, how would you not trigger that yourself?

[pedersen]

While the title is intriguing, I'm not sure how to achieve the goal. What are the plans for accomplishing this?

[amol-]

No plan yet, it was more like a remainder as I received the request and thought it's not a bad idea.
We can make available an option in app_cfg.py, when enabled it will just import all modules inside the model package and check for DeclarativeBase subclasses. Somehow like what we do for jinja filters loading.

[amol-]

@csmall Usually SQLAlchemy makes possible to use strings with the class name whenever the class should be used to declare references or foreign keys. This avoids circular dependencies in such cases.