baseXX/application/wap/model/store/StoreCategory.php

<?php
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// | Copyright (c) 2016~2020 https://www.crmeb.com All rights reserved.
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// | Licensed CRMEB并不是自由软件，未经许可不能去掉CRMEB相关版权
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// | Author: CRMEB Team <admin@crmeb.com>
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namespace app\wap\model\store;


use basic\ModelBasic;

class StoreCategory extends ModelBasic
{
    public static function pidByCategory($pid,$field = '*',$limit = 0)
    {
        $model = self::where('pid',$pid)->where('is_show',1)->field($field);
        if($limit) $model->limit($limit);
        return $model->order('sort DESC')->select();
    }

    public static function pidBySidList($pid)
    {
        return self::where('pid',$pid)->column('id');
    }

    public static function cateIdByPid($cateId)
    {
        return self::where('id',$cateId)->value('pid');
    }

}