Rails production: locales switching

Question

In my app I've made switching locales with sessions. The logic keeps in controller:

class SetLanguageController < ApplicationController

  def russian
    I18n.locale = :ru
    set_session_and_redirect
  end

  def english
    I18n.locale = :en
    set_session_and_redirect
  end

  private

  def set_session_and_redirect
    session[:locale] = I18n.locale
    redirect_to :back
    rescue ActionController::RedirectBackError
      redirect_to :root
  end

end

switching works with links:

link_to_unless I18n.locale == :ru, "Русский", rus_locale_path
link_to_unless I18n.locale == :en, "English", eng_locale_path

code for locales in routes (unnecessary for question, but if you interesting)

get 'rus_locale' => 'set_language#russian'
get 'eng_locale' => 'set_language#english'

It works in development perfectly, but on production

application.rb

config.i18n.load_path += Dir[Rails.root.join('config','locales', '*.yml').to_s]
config.i18n.default_locale = :ru

How can I make it working on production? Thanks

Answer 1

I solved problem with setting a before_filter in application controller like

  before_filter :set_locale

  def set_locale
    I18n.locale = session[:locale] ? session[:locale] : I18n.default_locale
  end

But this solution is dummy because it doesn't solve essence of problem actually - previous code worked in development, but in production. If you know how to fix it more smartly you are wellcome