FRONTEND_MVC/models/News.php

<?php

namespace app\models;

use app\helpers\Transliterator;
use yii\helpers\Inflector;

/**
 * @property string $url
 */
class News extends \app\models\base\News
{
    public function getUrl():string
    {
        if(count($this->topics)>0){
            $topic = Transliterator::toUrl($this->topics[0]->title)."/";
        } else{
            $topic = "";
        }
        return "/news/".$topic.Transliterator::toUrl($this->title)."-".$this->id;
    }
}