=== NOTE: The localize method has been changed from localize to localized in version 1.1.2 --- {}[https://codeclimate.com/github/mattways/rails_i18n_routes] {Build Status}[https://travis-ci.org/mattways/rails_i18n_routes] {Dependency Status}[https://gemnasium.com/mattways/rails_i18n_routes] = Rails I18n Routes Minimalistic toolkit to handle i18n routes and detect locale from subdomain or prefix. = Install Put this line in your Gemfile: gem 'rails_i18n_routes' Then bundle: $ bundle = Usage Choose how the language would be selected in your application.rb... To use prefix (default): config.i18n_routes.selection = :prefix To use subdomain: config.i18n_routes.selection = :subdomain config.i18n_routes.mapping = { :es => [:ar, :uy] :pt => [:br] } In the case of subdomains you need to name the yml file in your locales dir using this format: es-UY.yml es-AR.yml pt-BR.yml Inside each yaml file: es-UY: routes: users: "usuarios" profile: "perfil" login: "entrar" (Please note each part of the path it's translated individually, you don't have to put translations for paths like "users/1/profile" just translate "users" and "profile", the plugin will do the rest) Finally in your routes.rb pass the routes you want to be localized to localize method: localized do math 'contact' => 'static#contact', :as => 'contact' end