Could anyone review my patch?

http://rails.lighthouseapp.com/projects/8994-ruby-on-rails/tickets/447-2-1-0-has_many-associations-broken#ticket-447-4
— this is the problem.

http://rails.lighthouseapp.com/attachments/28557/patch.diff — and this
is a patch.

My git branch is 447_bugfix.