search for: project_user_roles

Hello, I had an application on Rails 1.2 or 1.1 (don''t remember). Now I have updated it to 2.1. I had a migrations_helper.rb in the Libs directory which defined foreign_key and drop_foreign_key methods. But now migrate task doesn''t find them. Have I to include this directory somewhere with Rails 2.1? Doesn''t it work as always? Could I use another thing to declare