dingding/application/common/model/ShoppingTrolley.php

<?php
namespace app\common\model;
use think\Model;
// 购物车
class ShoppingTrolley extends Model
{
    /**
     * 验证商品某规格是否已加入购物车
     */
    public static function checkTrolley($user_id,$goods_id,$spec_id)
    {
        return self::where(['user_id'=>$user_id,'goods_id'=>$goods_id,'spec_id'=>$spec_id])->value('id');
    }

    public  function  goodsSpec()
    {
        return $this->belongsTo('StoreGoodsItem','spec_id')->field('id,goods_id,goods_spec,goods_no,spec_title,cover,is_deleted,original_price,sell_price');
    }

    public function goodsInfo()
    {
        return $this->belongsTo('StoreGoods','goods_id')->field('id,name,cover');

    }

}