在codeigniter中重定向到referer url

Question

在我的项目的消息系统,当你从一个用户的消息,你发送一个电子邮件警告说,其他用户发了一个信息给这里查看邮件点击(即帖子的网址),所以如果用户没有在系统登录他重定向到登录页面,登录后它应该回到referer url.我在核心文件夹中创建了一个basecontoller并扩展了CI_controller,验证代码如下所示.

function authenticate($type = 'user')
    {
        if($type == 'user')
        {
            if($this->user_id)
            {
                // user is logged in. check for permissions now
            }
            else
            {
                // user isnt logged in. store the referrer URL in a var.
                if(isset($_SERVER['HTTP_REFERER']))
                {
                    $redirect_to = str_replace(base_url(),'',$_SERVER['HTTP_REFERER']);
                }
                else
                {
                    $redirect_to = $this->uri->uri_string();
                }            

                redirect('user/login?redirect='.$redirect_to);
                exit;
            }
        }

        if($type == 'admin')
        {
            if($this->session->userdata('admin_id') && $this->session->userdata('user_type') ==5)
            {
                // Admin is logged in
            }
            else
            {
                redirect('admin/login');
                exit;
            }
        }
    }

引荐网址为"http://example.com/project/pm/view_conversation?id=11"现在的问题是我得到引荐来源网址,直到view_conversation并没有能够得到的ID部分.

有什么建议吗？

谢谢.

Answer 1

这有助于:

CI 2+ https://www.codeigniter.com/userguide2/libraries/user_agent.html

CI 3+ http://www.codeigniter.com/user_guide/libraries/user_agent.html

$this->load->library('user_agent');
if ($this->agent->is_referral())
{
    echo $this->agent->referrer();
}

Answer 2

怎么样

redirect($_SERVER['HTTP_REFERER']);

使用php的$_SERVER全局变量.

这对我有用!

Answer 3

将该代码放在您的登录控制器中

function index() {
    $this->load->library('user_agent');  // load user agent library

    //Set session for the referrer url
    $this->session->set_userdata('referrer_url', $this->agent->referrer() );  
}

登录后重定向代码

// user is authenticated if referrer is there
if( $this->session->userdata('referrer_url') ) {
    //Store in a variable so that can unset the session
    $redirect_back = $this->session->userdata('referrer_url');
    $this->session->unset_userdata('referrer_url');
    redirect( $redirect_back );
}