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

<?php

namespace app\data\model;

use think\admin\Model;
use think\db\Query;
use think\helper\Str;
/**
 * @method static|Query show()
 */
class DataBidding extends Model
{
    protected $type=[
        'files'=>'array',
    ];
    protected $append=[
        'citys',
    ];
    public function scopeShow(Query $query){
        $query->where('status',1);
    }
    public function setCityAttr($a){
        if(is_array($a)){
            return implode(',',$a);
        }
        return $a;
    }
    public function type(){
        return $this->belongsTo(DataBiddingType::class,'type_id');
    }
    public function getCityAttr($a,$model){
        return array_map(function ($val){
            return intval($val);
        },array_filter(explode(',',$a)));
    }

    public function getCitysAttr($a,$model){
        if(empty($model['city'])){
            return [];
        }
        return BasePostageRegion::whereIn('id',$model['city'])->column('name');
    }
    public function win(){
        return $this->hasOne(DataBiddingWin::class,'b_id');
    }
}