Rails3 locale

gistfile1.txt

In my application.rb :

config.i18n.available_locales = [:fr, :en, :nl, :es]

My routes :

scope "(:locale)" do
  root :to => "home#index"
  devise_for :users, :controllers => {:registrations => 'registrations'}
  get '/home/test' => 'home#test', :as => 'home_test'
end

My app controller :

class ApplicationController < ActionController::Base
  protect_from_forgery
  before_filter :set_locale

  private
 
  def set_locale
    param_locale = params[:locale]
    if param_locale.nil?
      request.user_preferred_languages
      I18n.locale = request.compatible_language_from(I18n.available_locales)
    elsif !param_locale.nil? && I18n.available_locales.include?(:"#{param_locale}")
      I18n.locale = param_locale
    elsif !param_locale.nil? && !I18n.available_locales.include?(:"#{param_locale}")
      redirect_to main_app.root_path, :alert => 'Locale not found'
    else
      I18n.locale = I18n.default_locale
    end
  end
end