fastadmin_tailored/application/common/model/Carts.php

<?php

namespace app\common\model;

use think\Cookie;
use think\Model;

/**
 * 模型
 */
class Carts extends Model
{

    // 表名
    protected $name = 'shop_carts';
    // 开启自动写入时间戳字段
    protected $autoWriteTimestamp = 'int';
    // 定义时间戳字段名
    protected $createTime = 'createtime';
    protected $updateTime = '';
    // 追加属性
    protected $append = [];

    public function Goods()
    {
        return $this->belongsTo('Goods', 'goods_id', 'id', [], 'LEFT');
    }

    public function Sku()
    {
        return $this->belongsTo('Sku', 'goods_sku_id', 'id', [], 'LEFT');
    }
}