public static function each(ORM &$model, Request $request, $data = null)
    {
        if (!is_null($data)) {
            foreach ($data as $key) {
                $model->$key = $request->$$key;
            }
        } else {
            foreach ($request->all() as $key => $value) {
                if (in_array($key, $model->_columns)) {
                    $model->$key = $request->$key;
                }
            }
        }
    }