public function getDefaultParams($model, $langCode)
    {
        $fmt = new Formatter;
        $params = [
            'title'   => $model->i18n[$langCode]->title, // $model->title = const (for def lang)
            'slug'    => $model->slug,
            'path'    => $model::getNodePath($model),
            'owner'   => $fmt->asUsername($model->owner_id),
            'created' => $model->create_time,
            'updated' => $model->update_time,
            //...
        ];
        return $params;
    }