The i18n locale suddenly stopped working.

Rails.application.routes.drawdo

  # The priority is based upon order of creation: first created->highest priority.
  # See how all your routes lay out with "rake routes".

  # You can have the root of your site routed with "root"
  # root 'welcome #index'


device_for:users,skip:[:session,:password,:registration],controllers:{omniauth_callbacks:"users/omniauth_callbacks"}


 # Locale Information
scope"(:locale)" , locale: /en | ja /do
   get'/'=>'frontpage#index'
   get'restaurant /'=>'restaurant#index'
   get'restaurant /:id'=>'restaurant#show'
   get'menu/'=>'menu#index'
   get'menu /:id'=>'menu#show'
   get'area/'=>'area#index'
   get'area /:id'=>'area#show'

   resources —reviews

   device_for:users,skip:[:mniauth_callbacks]

end

class ApplicationController<ActionController::Base
  # Prevent CSRF attacks by raising an exception.
  # For APIs, you may want to use: null_session installed.
  protect_from_forgery with: —Exception

  before_action:set_locale,:configure_permitted_parameters, if::device_controller?


  default_locale
    I18n.locale=params[:locale]||I18n.default_locale
  end

  default_url_options(options={})
    { locale —I18n.locale}.merge options
  end

  private
  def configure_permitted_parameters
  device_parameter_sanitizer.for(:sign_up)<<:name
  device_parameter_sanitizer.for(:account_update)<<:name
  end