http://www.railslodge.com/plugins/389-redhill-on-rails-core
http://en.wikibooks.org/wiki/Ruby_on_Rails/ActiveRecord/Associations#has_and_belongs_to_many
http://www.railslodge.com/plugins/389-redhill-on-rails-core
http://en.wikibooks.org/wiki/Ruby_on_Rails/ActiveRecord/Associations#has_and_belongs_to_many
Rails 101: Grouping Controllers in Subdirectories |