xixie/application/common/model/NewsCate.php

<?php
namespace app\common\model;
use think\Model;
// 资讯分类
class NewsCate extends Model
{
    /**
     * 获取分类
     */
    public static function getCates()
    {
        $list = self::where(['is_deleted'=>0,'pid'=>0])->field('id,logo,title,pid')->order('sort desc')->select();
        foreach ($list as $v){
            $child_ren = self::where(['is_deleted'=>0,'pid'=>$v->id])->field('id,logo,title,pid')->order('sort desc')->select();
            if($child_ren) $v->child_ren =  $child_ren;
        }
        return $list ? $list->toArray() : [];
    }

}