CODEWITHSUNDEEP
phpcodeignitersessionhook
B. Desai
B. Desai

Reputation: 16436

codeIgniter can't access session in Hook

I have created on hook to set current visiting URL to session. I have to use this URL later on. I have called session method of codeIgniter using $this->CI =& get_instance(); and then $this->CI->session->userdata but it is giving

Trying to get property of non-object on $this->CI->session->userdata line

I have done following things to enable hooks in CI

config.php

$config['enable_hooks'] = TRUE;

hooks.php

$hook['pre_controller'] = array(
        'class'    => 'Preclass',
        'function' => 'checkreq',
        'filename' => 'preclass.php',
        'filepath' => 'hooks',
        'params'   => array()
);

preclass.php

class Preclass
{
    private $CI;
    public function __construct()
    {
        $this->CI =& get_instance();

    }
    public function checkreq($value='')
    {
        var_dump($this->CI->session->userdata);
        die;
    }
}

Note: Don't close this post as Duplicate of PHP errors. As I know about errors. This is in CodeIgniter and I want to check session before any controller method gets invoked.

Upvotes: 1

Views: 1497

Answers (2)

Alex
Alex

Reputation: 9265

From comment: "But I want it before controller methods invoke even before constructor"

To solve your issue, this is about the best you can do:

Make an MY_Controller.php in application/core:

class MY_Controller extends CI_Controller {

    public function __construct() {
        parent::__construct();
        // class is just an alias for the controller name
        if (!$this->user->is_allowed($this->router->class)) {
            redirect('somepage');
        }
    }

}

Then have all your controllers extend MY_Controller:

class Somecontroller extends MY_Controller {

    public function __construct() {
        parent::__construct();
        // nothing below the above line will be reached
        // if the user isn't allowed
    }

}

Whether or not you have a __construct() method in the class: nothing will happen so long as the user isn't allowed to access the page e.g. nothing after parent::__construct() will be called - even methods. Again, the fact that the parent constructor is called is implied if no constructor exists for the controller.

Note: if you autoload a model and do the same logic in the MY_Controller in the models __construct() the same results should be achieved. I just find this method cleaner.

Upvotes: 2

Rejoanul Alam
Rejoanul Alam

Reputation: 5398

This is not possible in Codeigniter as session itself a library and you are trying to call it pre_controller. When controllers not loaded yet how can you use it even in hook.

Solution

You may use post_controller_constructor instead what are using now

$hook['post_controller_constructor'] = array(
        'class'    => 'Preclass',
        'function' => 'checkreq',
        'filename' => 'preclass.php',
        'filepath' => 'hooks',
        'params'   => array()
);

otherwise you may also use native session here

hope it help

Upvotes: 0

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