def responds_to_parent
      yield

      if performed?
        # We're returning HTML instead of JS or XML now
        response.headers['Content-Type'] = 'text/html; charset=UTF-8'

        # Either pull out a redirect or the request body
        script = if response.headers['Location']
                   # TODO: erase_redirect_results is missing in rails 3.0 has to be implemented
                   # erase redirect
                   "document.location.href = #{location.to_s.inspect}"
                 else
                   response.body
        end

        # Escape quotes, linebreaks and slashes, maintaining previously escaped slashes
        # Suggestions for improvement?
        script = (script || '')
                 .gsub('\\', '\\\\\\')
                 .gsub(/\r\n|\r|\n/, '\\n')
                 .gsub(/['"]/, '\\\\\&')
                 .gsub('</script>', '</scr"+"ipt>')

        # Clear out the previous render to prevent double render
        response.request.env['action_controller.instance'].instance_variable_set(:@_response_body, nil)

        # Eval in parent scope and replace document location of this frame
        # so back button doesn't replay action on targeted forms
        # loc = document.location to be set after parent is updated for IE
        # with(window.parent) - pull in variables from parent window
        # setTimeout - scope the execution in the windows parent for safari
        # window.eval - legal eval for Opera
        render plain: "<html><body><script type='text/javascript' charset='utf-8'>
  with(window.parent) { setTimeout(function() { window.eval('#{script}'); }, 1) };
  </script></body></html>".html_safe
      end
    end
def responds_to_parent
      yield

      if performed?
        # We're returning HTML instead of JS or XML now
        response.headers['Content-Type'] = 'text/html; charset=UTF-8'

        # Either pull out a redirect or the request body
        script = if response.headers['Location']
                   # TODO: erase_redirect_results is missing in rails 3.0 has to be implemented
                   # erase redirect
                   "document.location.href = #{location.to_s.inspect}"
                 else
                   response.body
        end

        # Escape quotes, linebreaks and slashes, maintaining previously escaped slashes
        # Suggestions for improvement?
        script = (script || '')
                 .gsub('\\', '\\\\\\')
                 .gsub(/\r\n|\r|\n/, '\\n')
                 .gsub(/['"]/, '\\\\\&')
                 .gsub('</script>', '</scr"+"ipt>')

        # Clear out the previous render to prevent double render
        response.request.env['action_controller.instance'].instance_variable_set(:@_response_body, nil)

        # Eval in parent scope and replace document location of this frame
        # so back button doesn't replay action on targeted forms
        # loc = document.location to be set after parent is updated for IE
        # with(window.parent) - pull in variables from parent window
        # setTimeout - scope the execution in the windows parent for safari
        # window.eval - legal eval for Opera
        render plain: "<html><body><script type='text/javascript' charset='utf-8'>
  with(window.parent) { setTimeout(function() { window.eval('#{script}'); }, 1) };
  </script></body></html>".html_safe
      end
    end
Executes the response body as JavaScript in the context of the parent window.
 Use this method of you are posting a form to a hidden IFRAME or if you would like
 to use IFRAME base RPC.