ruby-on-rails – Rails3：warning：toplevel constant Applicat

app/controllers/agency/agencies_controller.rb:1: warning: toplevel constant ApplicationController referenced by Agency::ApplicationController

我的agency_controller.rb：

class Agency::AgenciesController < Agency::ApplicationController

  def index
    ...
  end 

  ...
end

和Agency :: ApplicationController：

class Agency::ApplicationController < ApplicationController
  layout 'agency'

  helper_method :current_agency
  private

  def current_agency
    @current_agency ||= current_user.agency 
  end

end

铁轨从我想要什么？有什么麻烦？

与另一个控制器相同的情况

class Agency::ClientsController < Agency::ApplicationController
  ...
end

没有警告,没有错误…