微信卡包系列-核销微信卡券优惠券

优惠券的核销，主要是通过jssdk调用摄像头扫描优惠券的二维码，获取二维码编号到后端调用微信接口核销的过程

前端

前端页面代码，调用起摄像头，扫描优惠券二维码

   <div class="hx" @click="userScan">
                <i class="iconfont hexiao">i> 核销卡券
                <i class="iconfont jiantou-you icon">i>
                <i class="iconfont shaomiao icon">i>
            div>

userScan事件

 userScan:function(){
                let that = this
               // that.checkIsShopCoupon('274049434570')
                wx.scanQRCode({
                    needResult: 1, // 默认为0，扫描结果由微信处理，1则直接返回扫描结果，
                    scanType: ["qrCode","barCode"], // 可以指定扫二维码还是一维码，默认二者都有
                    success: function (res) {
                        if(res.errMsg=='scanQRCode:ok'){
                            let _code = res.resultStr;
                            that.checkIsShopCoupon(_code)
                        }
                    }
                })
            },
            checkIsShopCoupon:function(code){
                let that = this
                axios.post('/api/coupon/user/checkIsShopCoupon',{
                        code:code,
                        user_id:that.userInfo.user_id
                    }).then(res=>{
                        if(res.data.code==400){
                            alert('该卡券不能在本店使用')
                            return
                        } else {
                            /*--进行核销--*/
                             that.couponConsume(code)
                        }
                    })
            },
            /**
             * 卡券核销
             * @param {*} code
             */
            couponConsume:function(code) {
                let that = this
                axios.post('/api/coupon/user/couponConsume',{
                        code:code,
                        user_id:that.userInfo.user_id
                    }).then(res=>{
                        if(res.data.errcode == 0) {
                           alert('核销成功')
                        } else {
                           alert('核销失败,该未到使用时间或已核销！')
                        }
                    })
            },

后端

后端主要是接口/api/coupon/user/couponConsume，详细说一下这个接口

    function couponConsume(){
        $code = input('code');
        $user_id = input('user_id');
        $rs = user_coupon::get(['code'=>$code]);
        $wx = new wxhelper(config('wx')['AppID'],config('wx')['AppSecret']);
        $result = $wx->doCouponConsume($rs['code'],$rs['card_id']);
        $res = json_decode($result);
        if($res->errcode==0) { //核销成功
            $rs->is_use=1;
            $rs->consume_user_id = $user_id;//设置核销员
            $rs->update_time=time();
            $rs->save();
        }
        return $result;// $this->buildSuccess();
    }

其中"doCouponConsume"方法
参考官方文档https://developers.weixin.qq.com/doc/offiaccount/Cards_and_Offer/gift_card.html#11.3%20%E6%A0%B8%E9%94%80%E7%94%A8%E6%88%B7%E7%A4%BC%E5%93%81%E5%8D%A1%E6%8E%A5%E5%8F%A3

    public function  doCouponConsume($code,$card_id) {
         $token= $this->getAccessToken(); //参考上一篇
         $url = "https://api.weixin.qq.com/card/code/consume?access_token=".$token;
         $data = '{ "code": "'.$code.'", "card_id": "'.$card_id.'"}';
         $result = $this->http_post($url,$data);
         return $result;
     }

这样，就完成了优惠券的核销了。