Why constructor returns a null in Laravel 5.6

Question

class AdminController extends Controller
{
    public function __construct() {
      $notification = Notification::where('read_status', 0)->get();
    }
}

In $notification variable constructor returns an null while data is present in notifications table.

Robert · Accepted Answer · 2018-07-18 09:49:51Z

1

Constructors do not return values, their only purpose is to instantiate class instances.

If you want to fetch data and use it in your class, you can do something like:

class AdminController extends Controller
{
    private $notifications;

    public function __construct()
    {
        $this->notifications = Notification::where('read_status', 0)->get();
    }
}

or

class AdminController extends Controller
{
    private $notifications;

    public function __construct()
    {
         $this->loadUnreadNotifications();
    }

    private function loadUnreadNotifications()
    {
        $this->notifications = Notification::where('read_status', 0)->get();
    }
}

After which you can use $this->notifications in your other controller methods.

answered Jul 18, 2018 at 9:49

Robert

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