从头文件查看Codeigniter会话 [英] Codeigniter Sessions Checking from a header view file

问题描述

我还很年轻，刚开始使用Codeigniter，并且在会话方面遇到了一些困惑。

I am fairly new and just started to use Codeigniter, and have come across some confusion regarding sessions.

我想要实现的是，就像在常规php中一样，我想检查用户是否使用检查会话数据的标头包含文件登录。我不想在将数据传递到视图文件时在每个控制器中检查/编写该检查代码。

What I want to achieve is, like in regular php, I want to check if a user is logged in by using a header include file which checks the session data. I dont want to check/write that checking code in every controller while passing data to the view file.

有人可以告诉我如何做到这一点吗？

Can someone please show me how it can be done?

例如我不想在每个控制器中执行以下操作：

Ex. I don't want to do the following in every controller:

//Controller:
if($this->session->userdata('loggedin'){
$data['loggedin'] = $this->session->userdata('loggedin');
}
//I dont want to check the above on every function in every controller
$this->load->view('some_view_file', $data);

//some_view_file
if(isset($loggedin)){
echo "You are logged in!";
}
else
{
echo "Please log in!";
}

相反，我希望有以下内容：

Instead, I want something to like the following:

//some view file
if(isset($loggedin))
{
echo "your logged in";
}
else
{
echo "please log in";
}

此外，我如何使用本机php会话代替CI会话。任何帮助将不胜感激。

And also, how can I use native php sessions instead of CI Sessions. Any help will be much appreciated. Thanks.

推荐答案

首先，没有理由不能只写这样的东西s：

Firstly, theres no reason you can't just write something like this in your view:

<? echo ($this->session->userdata('loggedin')) ? "Logged In": "Not Logged In"; ?>

然后，您的控制器就不需要任何代码。

Then your controllers don't need any of that code.

但是，如果检查比较复杂，则可以在一些地方进行。

However if the check is more complex or something, then theres a few places you can do it.

1）在自定义控制器的构造函数中：创建一个新文件 application / core / MY_Controller.php ，并用类似以下内容的构造函数覆盖：

1) In the constructor of a custom controller: create a new file application/core/MY_Controller.php, and override the constructor with something like:

class MY_Controller extends CI_Controller 
{
    public function __construct() 
    {
        parent::__construct();
        if($this->session->userdata("loggedin")) {
            // do something
        }
    }
}

然后让所有控制器扩展MY_Controller。

then make all your controllers extend MY_Controller.

2）或在 post_controller_constructor 挂钩中。 http://codeigniter.com/user_guide/general/hooks.html （更多透明的，如果您已经拥有大量的控制器，可能会更容易）

2) Or in a post_controller_constructor hook. http://codeigniter.com/user_guide/general/hooks.html (this is more transparent, and probably easier if you have tons of controllers already)

您可以使用本机会话：
http://codeigniter.com/wiki/Native_session/

You can use native sessions with this: http://codeigniter.com/wiki/Native_session/

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