<?php
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// | 天诚科技 [ 刘海东 17600099397赋能开发者，助力企业发展 ]
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// | Copyright (c) 2016~2020 https://www.tczxkj.com All rights reserved.
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// | Licensed 该系统并不是自由软件，未经许可不能去掉相关版权
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// | Author:甘肃天诚志信电子商务有限公司 刘海东 联系电话维系17600099397
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namespace app\wap\model\material;

use traits\ModelTrait;
use basic\ModelBasic;
use service\UtilService as Util;

/**
 * Class DataDownloadCategpry 二级分类
 * @package app\wap\model\material
 */
class DataDownloadCategpry extends ModelBasic
{
    use ModelTrait;

    public function children()
    {
        return $this->hasMany('DataDownloadCategpry', 'pid', 'id')->where(['is_del' => 0, 'is_show' => 1])->order('sort DESC,id DESC');
    }

}