SQLAlchemy many-to-many orphan deletion

Question

I\'m trying to use SQLAlchemy to implement a basic users-groups model where users can have multiple groups and groups can have multiple users.

When a group becomes empty

Answer 1

The way I've generally handled this is to have a function on your user or group called leave_group. When you want a user to leave a group, you call that function, and you can add any side effects you want into there. In the long term, this makes it easier to add more and more side effects. (For example when you want to check that someone is allowed to leave a group).