Yii2 UserSetter Behavior

UserSetter.php

<?php
/**
 * Created by Alexander Litvinov
 * Email: alexander@codeordie.ru
 * May be freely distributed under the MIT license
 */

namespace common\behaviors;

use Yii;
use yii\base\Behavior;
use yii\db\ActiveRecord;

/**
 * Class UserSetter
 */
class UserSetter extends Behavior
{
    /**
     * @var string
     */
    public $userIdName = 'user_id';

    /**
     * @return array
     */
    public function events()
    {
        return [
            ActiveRecord::EVENT_BEFORE_INSERT => 'userSetter',
            ActiveRecord::EVENT_BEFORE_UPDATE => 'userSetter'
        ];
    }

    public function userSetter()
    {
        $UserIdName = $this->userIdName;
        $this->owner->$UserIdName = Yii::$app->user->id;
    }
}