class ApplicationController < ActionController::Base protect_from_forgery before_filter :set_flash_from_params before_filter :set_locale protected def set_flash_from_params if params[:flash] params[:flash].each do |key, message| flash.now[key.to_sym] = message end end end def set_locale available_languages = Dir.glob(Rails.root + "config/locales/??.yml").map do |file| File.basename(file, ".yml") end I18n.locale = request.compatible_language_from(available_languages) || I18n.default_locale end end