A demonstration app is available at Github: http://github.com/karmi/rails_i18n_demo_app/tree/master if you want to play with new Rails i18n API, which will be in Rails core in some time and the life would be a wee bit easier again :) The app was extracted why I was following a great tutorial at http://almosteffortless.com/2008/07/21/simple-localization-in-rails-22 one summer evening. Don’t forget it requires rake `freeze:rails:edge:, as the README states, SRSLY! :)