class NewsService extends Model {

/**
 * @param commonmodelsNews
 */
private $_newsModel;

/**
 * NewsService constructor.
 * @param array $config
 */
public function __construct($config = []) {

    parent::__construct($config);

    if(isset($config['id']) && $config['id']) {
        $this->_newsModel = News::findOne($config['id']);
        $this->setAttributes($this->_newsModel->getAttributes());
    }
    else {
        $this->_newsModel = new News();
    }
}

public function rules()
{
    return $this->_newsModel->rules();
}

public function attributeLabels()
{
    return $this->_newsModel->attributeLabels();
}

public function actionCreate()
 {
    $model = new NewsService();

    if (Yii::$app->request->isPost && $model->validate()) {
        $model->save();
        return $this->redirect(['view', 'id' => $model->id]);
    }

    return $this->render('create', ['model' => $model]);
 }