protected function handleOrderable($id, array $input = [])
    {
        if (array_key_exists('_orderable', $input)) {
            $model = $this->model->find($id);

            if ($model instanceof Sortable) {
                1 === $input['_orderable'] ? $model->moveOrderUp() : $model->moveOrderDown();

                return true;
            }
        }

        return false;
    }