public function getMetaTags($model)
    {

        $lang = Yii::$app->language;
        if (Yii::$app->id === 'app-backend') {
            $lang = Yii::$app->wavecms->editedLanguage;
        }

        return $this->andWhere([
            'model' => $model,
            'language' => $lang
        ]);

    }