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 (3.2, 4.0, 4.1, 4.2).

Quick Start

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

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:

MyApp::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:

    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.

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

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