RouteTranslator

RouteTranslator is a gem to allow you to manage the translations of your app routes with a simple dictionary format.

It started as a fork of the awesome translate_routes plugin by Raúl Murciano.

Right now it works with all the different flavours of rails 3-4 (3.0, 3.1, 3.2, 4.0, 4.1, 4.2).

Quick Start

1. If you have this routes.rb file originally:

   MyApp::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
   

2. Add the gem to your Gemfile:

   gem 'route_translator'

   And execute bundle install

3. Wrap the groups of routes that you want to translate inside a localized block:

   MyApp::Application.routes.draw do
   
     namespace :admin do
       resources :cars
     end
   
     localized do
       resources :cars
     end
   end

   And add the translations to your locale files, for example:

   es:
     routes:
       cars: coches
       new: nuevo
   fr:
     routes:
       cars: voitures
       new: nouveau

4. Your routes are translated! Here's the output of your rake routes now:

       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_en GET    /cars(.:format)                 cars#index {:locale=>"en"}
          cars_es GET    /es/coches(.:format)            cars#index {:locale=>"es"}
          cars_fr GET    /fr/voitures(.:format)          cars#index {:locale=>"fr"}
                  POST   /cars(.:format)                 cars#create {:locale=>"en"}
                  POST   /es/coches(.:format)            cars#create {:locale=>"es"}
                  POST   /fr/voitures(.:format)          cars#create {:locale=>"fr"}
       new_car_en GET    /cars/new(.:format)             cars#new {:locale=>"en"}
       new_car_es GET    /es/coches/nuevo(.:format)      cars#new {:locale=>"es"}
       new_car_fr GET    /fr/voitures/nouveau(.:format)  cars#new {:locale=>"fr"}
      edit_car_en GET    /cars/:id/edit(.:format)        cars#edit {:locale=>"en"}
      edit_car_es GET    /es/coches/:id/edit(.:format)   cars#edit {:locale=>"es"}
      edit_car_fr GET    /fr/voitures/:id/edit(.:format) cars#edit {:locale=>"fr"}
           car_en GET    /cars/:id(.:format)             cars#show {:locale=>"en"}
           car_es GET    /es/coches/:id(.:format)        cars#show {:locale=>"es"}
           car_fr GET    /fr/voitures/:id(.:format)      cars#show {:locale=>"fr"}
                  PUT    /cars/:id(.:format)             cars#update {:locale=>"en"}
                  PUT    /es/coches/:id(.:format)        cars#update {:locale=>"es"}
                  PUT    /fr/voitures/:id(.:format)      cars#update {:locale=>"fr"}
                  DELETE /cars/:id(.:format)             cars#destroy {:locale=>"en"}
                  DELETE /es/coches/:id(.:format)        cars#destroy {:locale=>"es"}
                  DELETE /fr/voitures/:id(.:format)      cars#destroy {:locale=>"fr"}
   

   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.

5. Your I18n.locale will be set up automatically from the url param when it's available.

   To disable it add this to your controller:

   skip_around_filter :set_locale_from_url

Configuration

You can configure RouteTranslator via an initializer or using the different environment config files.

RouteTranslator.config do |config|
  config.force_locale = true
  config.locale_param_key = :my_locale
end

Available Configurations

• force_locale
  Set this options to true to force the locale to be added to all generated route paths, even for the default locale.
  Defaults to false.
• hide_locale
  Set this options to true to force the locale to be hidden on generated route paths.
  Defaults to false.
• generate_unlocalized_routes
  Set this option to true to add translated routes without deleting original unlocalized versions.
  Autosets force_locale=true.
  Defaults to false.
• generate_unnamed_unlocalized_routes
  Set this option to true to add the behavior of force_locale, but with a named default route which behaves as if generate_unlocalized_routes was true. root_path will redirect to /en or /es depending on the value of I18n.locale.
  Defaults to false.
• locale_param_key
  The param key that will be used to set the locale to the newly generated routes.
  Defaults to :locale
• host_locales
  Optional hash to set I18n.default_locale based on request.host. Useful for apps accepting requests from more than one domain.
  See below for more details.

Host-based Locale

If you have an application serving requests from more than one domain, you might want to set I18n.default_locale dynamically based on which domain the request is coming from.

The host_locales option is a hash mapping hosts to locales, with full wildcard support to allow matching multiple domains/subdomains/tlds. Host matching is case insensitive.

When a request hits your app from a domain matching one of the wild-card matchers defined in host_locales, the default_locale will be set to the specified locale. Unless you specified the force_locale configuration option to true, that locale will be hidden from routes (acting like a dynamic hide_locale option).

Here are a few examples of possible mappings:

RouteTranslator.config.host_locales = 
{                                # Matches:
  '*.es'                 => :es, # TLD:         ['domain.es', 'subdomain.domain.es', 'www.long.string.of.subdomains.es'] etc.
  'ru.wikipedia.*'       => :ru, # Subdomain:   ['ru.wikipedia.org', 'ru.wikipedia.net', 'ru.wikipedia.com'] etc.
  '*.subdomain.domain.*' => :ru, # Mixture:     ['subdomain.domain.org', 'www.subdomain.domain.net'] etc.
  'news.bbc.co.uk'       => :en, # Exact match: ['news.bbc.co.uk'] only
}

In the case of a host matching more than once, the order in which the matchers are defined will be taken into account, like so:

RouteTranslator.config.host_locales = { 'russia.*' => :ru, '*.com'    => :en } # 'russia.com' will have locale :ru
RouteTranslator.config.host_locales = { '*.com'    => :en, 'russia.*' => :ru } # 'russia.com' will have locale :en

As Hash are not ordered in Ruby 1.8, use an ActiveSupport::OrderedHash instead.

If host_locales option is set, the following options will be forced (even if you set to true):

@config.generate_unlocalized_routes         = false
@config.generate_unnamed_unlocalized_routes = false
@config.force_locale                        = false
@config.hide_locale                         = false

This is to avoid odd behaviour brought about by route conflicts and because host_locales forces and hides the host-locale dynamically.

Contributing

Bring it! Send us a pull request. Don't worry about styling or small details, we are open to discussion.