/**
* @param $goodsinfo
* 将商品信息添加到数据库的购物车中
*/
private function addDb($goodsinfo)
{
$goodsinfo['member_id'] = UID;
//判断是否购物车中已经存在该商品
if ($this->where("member_id={$goodsinfo['member_id']} and goods_id={$goodsinfo['goods_id']}")->count()) {
//改变购物车中已经存在的商品的数量
$this->where(array('member_id' => $goodsinfo['member_id'], 'goods_id' => $goodsinfo['goods_id']));
return parent::setInc('num', $goodsinfo['num']);
} else {
//直接将商品加入购物车
parent::add($goodsinfo);
}
}
