Forum\Controller\Category\SaveController::prepareExecute PHP Метод

    protected function prepareExecute()
    {
        parent::prepareExecute();
        if (isset($this->data['id'])) {
            $this->record->load($this->data['id']);
        }
        if ($this->data['id']) {
            $this->data['parent_id'] = null;
        }
    }