new

# File actionpack/lib/action_controller/mime_responds.rb, line 112
      def initialize(controller)
        @controller = controller
        @request    = controller.request
        @response   = controller.response

        if ActionController::Base.use_accept_header
          @mime_type_priority = Array(Mime::Type.lookup_by_extension(@request.parameters[:format]) || @request.accepts)
        else
          @mime_type_priority = [@request.format]
        end

        @order     = []
        @responses = {}
      end