route_translator | rails app route to various languages | Menu library

If you have this routes.rb file originally:.
If you have this routes.rb file originally: Rails.application.routes.draw do namespace :admin do resources :cars end resources :cars end The output of rake routes.rb would be: admin_cars GET /admin/cars(.:format) admin/cars#index POST /admin/cars(.:format) admin/cars#create new_admin_car GET /admin/cars/new(.:format) admin/cars#new edit_admin_car GET /admin/cars/:id/edit(.:format) admin/cars#edit admin_car GET /admin/cars/:id(.:format) admin/cars#show PUT /admin/cars/:id(.:format) admin/cars#update DELETE /admin/cars/:id(.:format) admin/cars#destroy cars GET /cars(.:format) cars#index POST /cars(.:format) cars#create new_car GET /cars/new(.:format) cars#new edit_car GET /cars/:id/edit(.:format) cars#edit car GET /cars/:id(.:format) cars#show PUT /cars/:id(.:format) cars#update DELETE /cars/:id(.:format) cars#destroy
Add the gem to your Gemfile: gem 'route_translator' And execute bundle install
Wrap the groups of routes that you want to translate inside a localized block: Rails.application.routes.draw do namespace :admin do resources :cars end localized do resources :cars get 'pricing', to: 'home#pricing', as: :pricing end end And add the translations to your locale files, for example: es: routes: cars: coches new: nuevo pricing: precios fr: routes: cars: voitures new: nouveau pricing: prix
Your routes are translated! Here's the output of your rake routes now: Prefix Verb URI Pattern Controller#Action admin_cars GET /admin/cars(.:format) admin/cars#index POST /admin/cars(.:format) admin/cars#create new_admin_car GET /admin/cars/new(.:format) admin/cars#new edit_admin_car GET /admin/cars/:id/edit(.:format) admin/cars#edit admin_car GET /admin/cars/:id(.:format) admin/cars#show PATCH /admin/cars/:id(.:format) admin/cars#update PUT /admin/cars/:id(.:format) admin/cars#update DELETE /admin/cars/:id(.:format) admin/cars#destroy cars_fr GET /fr/voitures(.:format) cars#index {:locale=>"fr"} cars_es GET /es/coches(.:format) cars#index {:locale=>"es"} cars_en GET /cars(.:format) cars#index {:locale=>"en"} POST /fr/voitures(.:format) cars#create {:locale=>"fr"} POST /es/coches(.:format) cars#create {:locale=>"es"} POST /cars(.:format) cars#create {:locale=>"en"} new_car_fr GET /fr/voitures/nouveau(.:format) cars#new {:locale=>"fr"} new_car_es GET /es/coches/nuevo(.:format) cars#new {:locale=>"es"} new_car_en GET /cars/new(.:format) cars#new {:locale=>"en"} edit_car_fr GET /fr/voitures/:id/edit(.:format) cars#edit {:locale=>"fr"} edit_car_es GET /es/coches/:id/edit(.:format) cars#edit {:locale=>"es"} edit_car_en GET /cars/:id/edit(.:format) cars#edit {:locale=>"en"} car_fr GET /fr/voitures/:id(.:format) cars#show {:locale=>"fr"} car_es GET /es/coches/:id(.:format) cars#show {:locale=>"es"} car_en GET /cars/:id(.:format) cars#show {:locale=>"en"} PATCH /fr/voitures/:id(.:format) cars#update {:locale=>"fr"} PATCH /es/coches/:id(.:format) cars#update {:locale=>"es"} PATCH /cars/:id(.:format) cars#update {:locale=>"en"} PUT /fr/voitures/:id(.:format) cars#update {:locale=>"fr"} PUT /es/coches/:id(.:format) cars#update {:locale=>"es"} PUT /cars/:id(.:format) cars#update {:locale=>"en"} DELETE /fr/voitures/:id(.:format) cars#destroy {:locale=>"fr"} DELETE /es/coches/:id(.:format) cars#destroy {:locale=>"es"} DELETE /cars/:id(.:format) cars#destroy {:locale=>"en"} pricing_fr GET /fr/prix(.:format) home#pricing {:locale=>"fr"} pricing_es GET /es/precios(.:format) home#pricing {:locale=>"es"} pricing_en GET /pricing(.:format) home#pricing {:locale=>"en"} Note that only the routes inside a localized block are translated. In :development environment, I18n is configured by default to not use fallback language. When a translation is missing, it uses the translation key last segment as fallback (cars and new in this example). In :production environment, you should either set config.i18n.fallbacks = false or set up translations for your routes in every languages.
If you want to set I18n.locale from the url parameter locale, add the following line in your ApplicationController or in the controllers that have translated content: around_action :set_locale_from_url Note: you might be tempted to use before_action instead of around_action: just don't. That could lead to thread-related issues.