Question

我有一个会话，我正在使用数据库进行会话。我在会话中使用userdata来存储用户的名字和“loggedin”标志。我正在自动加载会话库，所以我不必显式加载它。

我在控制器中使用它来检查“loggedin”和视图，以显示用户的名字，这导致CI_Session被加载两次并导致会话被破坏。 CI_Session加载它时都试图更新会话和数据库，第一个成功，第二个失败并破坏了会话。

我相信我违反了控制器和视图之间的分离，我只是使用控制器中的会话库并将带有用户名的变量传递给视图来解决问题。

但我的问题是：我的分析是否正确？我是否违反了控制器和视图之间的分离，只要我不再这样做，我应该没事，或者这可能会在其他情况下再次出现？

注意：我试着仔细询问这个问题而且我正在寻找技术答案而不是意见，我不希望这成为关于此问题的讨论等等。

按要求添加代码：

来自Controller Admin.php的

小部件

class Admin extends CI_Controller {
  function __construct() {
    parent::__construct();
    $this->load->model('users');
    $this->id = $this->session->userdata('id');
    $this->authorized = array('waccess' => $this->users->authorizedUser($this->id, 'waccess'),
                              'ceditor' => $this->users->authorizedUser($this->id, 'ceditor'),
                              'uadmin' => $this->users->authorizedUser($this->id, 'uadmin'),
                              'forms' => $this->users->authorizedUser($this->id, 'forms'));

  }
  public function index() {
    log_message('debug', 'Admin->index');
    $this->load->view('framework', array(
      'head' => $this->load->view('head', array('title' => 'Administrator', 'stylesheet' => 'admin.css', 'javascript' => 'jquery-ui-1.8.16.custom.min.js'), true),
      'header' => $this->load->view('headerAdmin', array('active' => 'Home', 'authorized' => $this->authorized), true),
      'body' => $this->load->view('adminHome', '', true),
      'midBody' => $this->load->view('blankMid', '', true),
      'footer' => $this->load->view('footer', '', true)
    ));
  }

来自View adminHome.php的片段

<div id="main">
  <div class="content">
    <h1>Employee Interface</h1>
<? if(!$this->session->userdata('loggedin')): ?>
....
<? else: ?>
    <p>Welcome <?=$this->session->userdata('fname')?> <?=$this->session->userdata('lname')?></p>
<? endif; ?>
    <p>Use the menu above to select the various employee and administrative options available to you</p>
  </div>
</div>

我添加了很多调试代码，但没有对CodeIgniter代码进行其他更改以查看发生了什么，这里是生成的日志条目：

DEBUG - 2013-03-04 19:54:31 --> Config Class Initialized
DEBUG - 2013-03-04 19:54:31 --> Hooks Class Initialized
DEBUG - 2013-03-04 19:54:31 --> Utf8 Class Initialized
DEBUG - 2013-03-04 19:54:31 --> UTF-8 Support Enabled
DEBUG - 2013-03-04 19:54:31 --> URI Class Initialized
DEBUG - 2013-03-04 19:54:31 --> Router Class Initialized
DEBUG - 2013-03-04 19:54:31 --> Output Class Initialized
DEBUG - 2013-03-04 19:54:31 --> Security Class Initialized
DEBUG - 2013-03-04 19:54:31 --> Input Class Initialized
DEBUG - 2013-03-04 19:54:31 --> Global POST and COOKIE data sanitized
DEBUG - 2013-03-04 19:54:31 --> Language Class Initialized
DEBUG - 2013-03-04 19:54:31 --> Loader Class Initialized
DEBUG - 2013-03-04 19:54:31 --> Helper loaded: url_helper
DEBUG - 2013-03-04 19:54:31 --> loading: session
DEBUG - 2013-03-04 19:54:31 --> Session Class Initialized
DEBUG - 2013-03-04 19:54:31 --> Helper loaded: string_helper
DEBUG - 2013-03-04 19:54:31 --> Database Driver Class Initialized
DEBUG - 2013-03-04 19:54:31 --> Session using database
DEBUG - 2013-03-04 19:54:31 --> Session matching on [session_id]: b791b771c776ca4166a73424315d1110
DEBUG - 2013-03-04 19:54:31 --> Session matching on [user_agent]: Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.22 (KHTML, like Gecko) Chrome/25.0.1364.97 Safari/537.22
DEBUG - 2013-03-04 19:54:31 --> Session Updating
DEBUG - 2013-03-04 19:54:31 --> Session Data: [session_id] => b791b771c776ca4166a73424315d1110
DEBUG - 2013-03-04 19:54:31 --> Session Data: [ip_address] => 184.4.66.94
DEBUG - 2013-03-04 19:54:31 --> Session Data: [user_agent] => Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.22 (KHTML, like Gecko) Chrome/25.0.1364.97 Safari/537.22
DEBUG - 2013-03-04 19:54:31 --> Session Data: [last_activity] => 1362444838
DEBUG - 2013-03-04 19:54:31 --> Session Data: [user_data] => 
DEBUG - 2013-03-04 19:54:31 --> Session Data: [id] => 15
DEBUG - 2013-03-04 19:54:31 --> Session Data: [fname] => Test
DEBUG - 2013-03-04 19:54:31 --> Session Data: [lname] => Test
DEBUG - 2013-03-04 19:54:31 --> Session Data: [email] => t
DEBUG - 2013-03-04 19:54:31 --> Session Data: [loggedin] => 1
DEBUG - 2013-03-04 19:54:31 --> Session Update Completed
DEBUG - 2013-03-04 19:54:31 --> Session Data: [session_id] => 7875df72dc94ca7bd149debe69865a2e
DEBUG - 2013-03-04 19:54:31 --> Session Data: [ip_address] => 184.4.66.94
DEBUG - 2013-03-04 19:54:31 --> Session Data: [user_agent] => Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.22 (KHTML, like Gecko) Chrome/25.0.1364.97 Safari/537.22
DEBUG - 2013-03-04 19:54:31 --> Session Data: [last_activity] => 1362444871
DEBUG - 2013-03-04 19:54:31 --> Session Data: [user_data] => 
DEBUG - 2013-03-04 19:54:31 --> Session Data: [id] => 15
DEBUG - 2013-03-04 19:54:31 --> Session Data: [fname] => Test
DEBUG - 2013-03-04 19:54:31 --> Session Data: [lname] => Test
DEBUG - 2013-03-04 19:54:31 --> Session Data: [email] => t
DEBUG - 2013-03-04 19:54:31 --> Session Data: [loggedin] => 1
DEBUG - 2013-03-04 19:54:31 --> Session routines successfully run
DEBUG - 2013-03-04 19:54:31 --> Controller Class Initialized
DEBUG - 2013-03-04 19:54:31 --> Model Class Initialized
DEBUG - 2013-03-04 19:54:31 --> loading: session
DEBUG - 2013-03-04 19:54:31 --> Session Class Initialized
DEBUG - 2013-03-04 19:54:31 --> Database Driver Class Initialized
DEBUG - 2013-03-04 19:54:31 --> Session using database
DEBUG - 2013-03-04 19:54:31 --> Session matching on [session_id]: b791b771c776ca4166a73424315d1110
DEBUG - 2013-03-04 19:54:31 --> Session matching on [user_agent]: Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.22 (KHTML, like Gecko) Chrome/25.0.1364.97 Safari/537.22
DEBUG - 2013-03-04 19:54:31 --> Session not found, destroying instance
DEBUG - 2013-03-04 19:54:31 --> Session routines successfully run
DEBUG - 2013-03-04 19:54:31 --> Controller Class Initialized
DEBUG - 2013-03-04 19:54:31 --> Admin->index
DEBUG - 2013-03-04 19:54:31 --> File loaded: application/views/head.php
DEBUG - 2013-03-04 19:54:31 --> File loaded: application/views/headerAdmin.php
DEBUG - 2013-03-04 19:54:31 --> File loaded: application/views/adminHome.php
DEBUG - 2013-03-04 19:54:31 --> File loaded: application/views/blankMid.php
DEBUG - 2013-03-04 19:54:31 --> File loaded: application/views/footer.php
DEBUG - 2013-03-04 19:54:31 --> File loaded: application/views/framework.php
DEBUG - 2013-03-04 19:54:31 --> Final output sent to browser
DEBUG - 2013-03-04 19:54:31 --> Total execution time: 0.0793

Answer 1

尝试更改配置设置：

$config['sess_match_useragent'] = FALSE;

我的猜测是你的视图或其他脚本或浏览器插件中有某种代码会混淆使用者检查。这导致会话匹配不匹配，导致结果Session not found, destroying instance，导致您的错误。

当然，此更改的结果是安全性较低的会话，因此如果安全性是一个大问题，您可以进一步了解导致问题的原因。

您可以在其他帖子中找到信息...

Googlechrome框架是原因（默认情况下是Bootstrap模板的一部分）： Codeigniter sessions being destroyed in IE 10 when changing pages

FirePHP扩展是原因： http://blog.tiger-workshop.com/firephp-firefox-extension-causing-codeigniter-session-lost/

预期的CodeIgniter会话行为？

1 个答案: