assign_controller

# File actionview/lib/action_view/helpers/controller_helper.rb, line 20
      def assign_controller(controller)
        if @_controller = controller
          @_request = controller.request if controller.respond_to?(:request)
          if controller.respond_to?(:config)
            @_config = controller.config.inheritable_copy
          else
            @_config = ActiveSupport::InheritableOptions.new
          end
          @_default_form_builder = controller.default_form_builder if controller.respond_to?(:default_form_builder)
        else
          @_request ||= nil
          @_config = ActiveSupport::InheritableOptions.new
          @_default_form_builder ||= nil
        end
      end