How to determine if child rows added?

Hey all - I have an odd ball situation where I want to check the parent ActiveRecord object to see if the child rows have been loaded already or not. I'm sure the answer is probably staring me right in the face... but it's Monday and my brain isn't firing all of it's pistons yet!

Thanks

Nevermind... I just thought I'd try the obvious...and of course Ruby came through...

parent_object.child_rows.loaded?

This returns a boolean one way or the other... hope my morning fogginess helps someone else out!