Association Callbacks: after_create/before_create


I was thinking of creating a patch to include two new association callbacks, after_create and before_create. These would work exactly the same way that after_add and before_add would work, but would be called when an item is added to the collection when calling create.

Do you think there is any value in this?

What's the use case you have in mind? Given that we have after_create and friends on the model themselves, I can't really think of anything off hand. Perhaps an example would people figure out if they think there's some value?