common/models/User.php

<?php
    
    namespace common\models;
    /**
     * Created by PhpStorm.
     * User: timur
     * Date: 02.02.18
     * Time: 9:00
     */
    
    use artbox\core\models\User as ArtboxUser;
    
    class User extends ArtboxUser
    {
        public function getUserName(){}
    
        public $password;
    
        public function rules(){
            return  array_merge(
                parent::rules(),
                [
                    [['email', 'username'], 'string'],
                    ['email', 'email'],
                    ['password', 'safe']
                ]
            );
        }
    }