Question

I have core class in application/core/MY_Lang.php, this class extends CI_Lang class, and overrides contructor of base class:

class MY_Lang extends CI_Lang {
    function __construct()
    {
        parent::__construct();
    }
}

How i can access to the database object from constructor of my class.

I tried to access CI super object, but class CI_Controller is not loaded for now

    if (class_exists('CI_Controller'))
    {
        $this->CI =& get_instance();
    }

Answer 1

Ok, looks like I was wrong about being able to just call get_instance().

But I’ve found a similar post which suggests using a post_controller_constructor “hook” to call your function

See here: CodeIgniter: get_instance inside My_Lang

The documentation for Code Igniter hooks is here: http://ellislab.com/codeigniter/user_guide/general/hooks.html

So I’m guessing that in your application/config/hooks.php file you want to add something like this:

$hook['post_controller_constructor'] = array(
                                'class'    => 'MY_Lang',
                                'function' => '__construct',
                                'filename' => 'MY_Lang.php',
                                'filepath' => 'core',
                                'params'   => array()
                                );

I haven’t tested this, but let me know if you’re not quite getting it to work and I can put together a proper test.

Of course, then in the function you specify in your hook is where you’d want to call get_instance() and then load the database library and do whatever work you want.