ship-expert/app/data/model/BasePostageRegion.php

<?php

namespace app\data\model;

use think\admin\Model;
use think\db\Query;

/**
 * 快递配送模型
 * Class BasePostageRegion
 * @package app\data\model
 * @method static static|Query level($level)
 */
class BasePostageRegion extends Model
{
    public static function hot(){
        $hot=['北京市','南京市','成都市','重庆市','西安市','广州市','苏州市','杭州市','武汉市'];
        return app()->cache->remember('app_area_hot',function () use ($hot) {
            return self::whereIn('name',$hot)->level(2)->field(['id','name'])->select();
        },0);
    }
    public function scopeLevel(Query $query,$level){
        $query->where('level',$level);
    }
    public static function getCity(){
        return self::where('level','<=',2)->select();
    }
}