Phalcon Setter Injection

// index.php:
$di->set('ImgStorage',
    [
        'className' => 'Gallery\Classes\AmazonS3'
    ]
);

$di->set('AbstractController',
    [
        'className' => 'AbstractController',
        'calls' => [
            [
                'method'    => 'setStorage',
                'arguments' => [
                    [
                        'type'  => 'service',
                        'name'  => 'ImgStorage'
                    ]
                ]
            ]
        ]
    ]
);


// AbstractController.php:
abstract class AbstractController extends Controller {

    protected $storage;

    public function setStorage(ImgStorage $storage) {

        $this->storage = $storage;
    }

    // ...
}

// Other controllers
class AlbumsController extends AbstractController { ... }