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.rb
module 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}\"")
end
end
module 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}\"")
end
end
在controller中使用helper
class 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
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
