drnic/composite_primary_keys — pull request #132 by jacktang (2012-11-17 06:30:05+00:00)
Title: add supporting to _field_changed? in rails 3.2.9

according to rails 3.2.9 changes (http://weblog.rubyonrails.org/2012/10/29/ann-rails-3-2-9-rc1-has-been-released/) field_changed? is renamed to _field_changed?. And the patch supported the change.