关于n秒后跳转google上很多文章，讲的很详细了这里主要还是使用meta来实现直接照下面这样写就可以了
render :text=>'<meta http-equiv=”refresh” content=”3; url=/welcome”> 3s refresh’?如果需要这里我们写个helper来做这个事情#创建一个helper>ruby script\generate helper c_http#编辑helper内容如下，这里主要使用了 eval 方法>type app\helpers\c_http_helper.rbmodule CHttpHelper??def auto_redirect(arg={})????sec = arg[:sec] || 3????url = arg[:url] || ‘/’????msg = arg[:msg] || ”????msg += ” Redirect to ‘#{url}’ after #{sec} sec”????eval(“render :text=>\”<meta http-equiv=’refresh’ content=’#{sec}; url=#{url}’>#{msg}\””)??endend#在controller中使用helperclass SessionsController < ApplicationController??include CUserAuthenticationHelper??include CHttpHelper??def new????userid = params[:userid]????passwd = params[:passwd]????if authenticate(userid,passwd)??????…????else??????auto_redirect(:sec=>’5′,:url=>welcome_path,:msg=>’sql query error’)????end??end??…end你的脸是为了呈现上帝赐给人类最贵重的礼物–微笑，
