How to load hook for particular controller

Question

I am new in codeigniter. I want to load hooks for admin panel controller.

$hook['post_controller_constructor'][] = array(
    'class'    => 'AdminData',
    'function' => 'myfunction',
    'filename' => 'loginhelp.php',
    'filepath' => 'hooks',
    'params'   => array()
);

Answer 1

The post_controller_constructor hook gets called after a $class is loaded. The class that gets loaded is based on the route parameters.

system/core/Codeigniter.php

/**
 *<code>
 *  http://example.com/adminData/method
 *</code>
 *
 * $CI = new adminData(); => application/controllers/adminData.php
**/
$CI = new $class();

$EXT->call_hook('post_controller_constructor'); 

So if you wanted to call a method on the adminData controller, you could do something like this.

This method is not ideal, as its not very OOP like, however the way CI is built from a design point of view, you have to do a few workarounds like the example below

application/controllers/adminData.php

class AdminData extends CI_Controller
{
    public function __construct(){}

    // This cannot be called directly in the browser
    public function _filter()
    {
        /**
         * Put your logic in here
         *<code>
         * $this->model->logic()
         *</code>
        **/
        exit('I have just be called!');
    }
}

application/hooks/loginhelp.php

class AdminData
{
    protected $ci;

    public function __construct()
    {
        global $CI;
        $this->ci = $CI;
    }

    public function myfunction()
    {
        // If the class is not == AdminData, just bail
        if(get_class($this->ci) != 'AdminData') return;

        if(!is_callable(array($this->ci, '_filter'))) return;

        //calls $AdminData->_filter()
        return call_user_func(array($this->ci, '_filter'));
    }
}