render

# File actionpack/lib/action_controller/renderer.rb, line 123
    def render(*args)
      request = ActionDispatch::Request.new(env_for_request)
      request.routes = controller._routes

      instance = controller.new
      instance.set_request! request
      instance.set_response! controller.make_response!(request)
      instance.render_to_string(*args)
    end