view_context_class

# File actionview/lib/action_view/rendering.rb, line 36
      def view_context_class
        @view_context_class ||= begin
          supports_path = supports_path?
          routes  = respond_to?(:_routes)  && _routes
          helpers = respond_to?(:_helpers) && _helpers

          Class.new(ActionView::Base) do
            if routes
              include routes.url_helpers(supports_path)
              include routes.mounted_helpers
            end

            if helpers
              include helpers
            end
          end
        end
      end