I've been knee deep in the source of Rails 3 since I'm developing against it and the available document outside the source itself is ported from Rails 2 and oft

I've been knee deep in the source of Rails 3 since I'm developing against it and the available document outside the source itself is ported from Rails 2 and often incorrect. The source for Rails 3 is refreshingly clean and free of alias chains. ActiveRecord is the exception, it still has quite a few of them in there.