Problem with $this in child Class extend of MX_Controllers

As I can see the object $this->auth really isn't recognized by Login class. Where is this object, on Base.php?

If this object is from other controller or lib I recommend create an lib or helper and subsequetly create a superglobal. On my latest project based on CI3 I have a superglobal ci that's instancied on BaseController, like this:

PHP Code:

class BaseController extends CI_Controller
{
    public $ci;
    public function __construct()
    {
        $this->ci &= get_instance();
        $this->ci->global->superglobal();
    }
}

/* Global is a library */
class Global
{
    public $panel;
    public function __construct()
    {
        $this->ci &= get_instance();
    }
    public function Superglobal()
    {
        $this->panel = "abc";
    }
} 


Then I can use $this->ci->panel to show "abc" where I want: controller or views.
(it's necessary running Global with part of autoloader)