dlh_test_server/app/common/model/localstore/LocalStoreGoodsCart.php

<?php

namespace app\common\model\localstore;

use app\common\basics\Models;

class LocalStoreGoodsCart extends Models
{
    public function goods()
    {
        return $this->hasOne(LocalStoreGoods::class, 'id', 'lsg_id');
    }

    // 商品规格为空，获取封面图
    public function getPicAttr($value, $data)
    {
        if ($data['item_id'] == 0) {
            $pic = LocalStoreGoodsPic::where('lsg_id', $data['lsg_id'])->field('url')->find();
            if ($pic) {
                return $pic['url'];
            }
        }
    }

    // 获取带有商品规格的属性
    public function getItemAttr($value, $data)
    {
        if ($data['item_id'] > 0) {
            return LocalStoreGoodsItem::where('id', $data['item_id'])->field('image, spec_value_str, price')->find()->toArray();
        }
    }
}