URL::current PHP Метод

        public static function current()
        {
            return \Illuminate\Routing\UrlGenerator::current();
        }

 public function __construct($id = false)
 {
     parent::__construct();
     $this->add("products");
     $this->name = "form_slider";
     $this->enctype = "multipart/form-data";
     $this->action = URL::current();
     $this->products = ProductDB::getAdminShow();
     if (!$id) {
         $this->text("title", "Название:");
         $this->textarea("description", "Описание:");
         $this->submit("insert_slider", "Сохранить");
     } else {
         $this->add("img");
         $this->add("product_id");
         $this->hidden("id", $id);
         $obj = new SliderDB();
         $obj->load($id);
         $this->text("title", "Название:", $obj->title);
         $img = ProductDB::getCellOnID($obj->product_id, "img");
         $view = new View(Config::DIR_TMPL);
         $this->img = $view->render("img", array("src" => Config::DIR_IMG_PRODUCT . $img), true);
         $this->textarea("description", "Описание:", $obj->description);
         $this->submit("update_slider", "Сохранить");
         $this->product_id = $obj->product_id;
     }
 }