{
        $sql = "DELETE FROM `" . $this->tabel . "` WHERE `id` = '" . $requestObject->id . "'";
        mysqli_query($this->link, $sql);
        $id = -1;
        if (mysqli_affected_rows($this->link) == 1) {
            $id = $requestObject->id;
        }
        $requestObject->id = $id;
        echo json_encode($requestObject);
    }
}
$controller = new Controller();
if (isset($_GET['action'])) {
    switch ($_GET['action']) {
        case "get":
            $controller->Get();
            break;
        case "update":
            $controller->Update($requestObject);
            break;
        case "save":
            $controller->Save($requestObject);
            break;
        case "delete":
            $controller->Delete($requestObject);
            break;
        default:
            echo "default";
            break;
    }
}