《仿盒马》app开发技术分享-- 订单结合优惠券结算（60）

技术栈

Appgallery connect

开发准备

上一节我们已经实现了优惠券的选择，并且成功的把券后的价格也展示给用户，不能使用的优惠券我们也用友好的方式告知用户，这一节我们来实现优惠券内容的下一步，优惠券内容结合订单进行结算提交

功能分析

因为我们之前的订单列表是订单相关商品相关是分开的，所以在这里我们同样要把优惠券的内容分开，只存储id进去后续再查询出对应的券金额，我们首先就是要修改订单表，然后在券选择的同时拿到优惠券的相关内容，提交订单时把优惠券内容一起提交，方便我们后续的订单详情内查询券后价

代码实现

首先修改orderlist的表内容

{
   
  "CloudDBZoneName": "default",
  "objectTypeName": "order_list",
  "fields": [
    {
   "fieldName": "id", "fieldType": "Integer", "notNull": true, "belongPrimaryKey": true},
    {
   "fieldName": "user_id", "fieldType": "Integer", "notNull": true, "defaultValue": 0},
    {
   "fieldName": "order_code", "fieldType": "String"},
    {
   "fieldName": "order_status", "fieldType": "Integer"},
    {
   "fieldName": "order_product_id", "fieldType": "String"},
    {
   "fieldName": "coupon_id", "fieldType": "Integer"},
    {
   "fieldName": "address", "fieldType": "String"},
    {
   "fieldName": "nickname", "fieldType": "String"},
    {
   "fieldName": "phone", "fieldType": "String"},
    {
   "fieldName": "order_remark", "fieldType": "String"},
    {
   "fieldName": "pay_type", "fieldType": "String"},
    {
   "fieldName": "order_create_time", "fieldType": "String"},
    {
   "fieldName": "order_pay_time", "fieldType": "String"},
    {
   "fieldName": "order_delivery_time", "fieldType": "String"},
    {
   "fieldName": "order_over_time", "fieldType": "String"}



  ],
  "indexes": [
    {
   "indexName": "field1Index", "indexList": [{
   "fieldName":"id","sortType":"ASC"}]}
  ],
  "permissions": [
    {
   "role": "World", "rights": ["Read", "Upsert", "Delete"]},
    {
   "role": "Authenticated", "rights": ["Read", "Upsert", "Delete"]},
    {
   "role": "Creator", "rights": ["Read", "Upsert", "Delete"]},
    {
   "role": "Administrator", "rights": ["Read", "Upsert", "Delete"]}
  ]
}

然后我们在选择券的时候拿到券的id，这里我们用回调的方式实现

//自定义弹窗页面
 onItemSelected: (coupon_id:number) => void= () => {
   
  };


//结算页
  @State coupon_id:number=0

 couponController: CustomDialogController| null = new CustomDialogController({
   
    builder: CouponCheckDialog({
   
      couponPrice:this.couponPrice,
      price:this.price(),
      onItemSelected:(coupon_id:number)=>{
   
        this.coupon_id=coupon_id
      }
    }),
    alignment: DialogAlignment.Bottom,
    customStyle:true
  });

结算订单时合并信息提交

 Text("提交订单")
          .fontColor(Color.White)
          .padding(10)
          .borderRadius(10)
          .backgroundColor("#d81e06")
          .fontSize(14)
          .onClick(async ()=>{
   
            if (this.addressInfo!=null) {
   
              let databaseZone = cloudDatabase.zone('default');
              try {
   
                for (let i = 0; i < this.productList.length; i++) {
   
                  let productPush = new order_product_list();
                  productPush.id=this.codeId+i
                  productPush.order_product_id=this.codeId
                  productPush.img=this.productList[i].productImgAddress
                  productPush.price=this.productList[i].productPrice
                  productPush.name=this.productList[i].productName
                  productPush.originalPrice=this.productList[i].productOriginalPrice
                  productPush.spec=this.productList[i].productSpecName
                  productPush.buyAmount=this.productList[i].buyAmount
                  let num = await databaseZone.upsert(productPush);
                  hilog.info(0x0000, 'testTag', `Succeeded in upserting data, result: ${
   num}`);

                }
              }catch (e) {
   
                hilog.info(0x0000, 'testTag', `Succeeded in upserting data, result: ${
   e}`);
              }


              let orderPush = new order_list();
              orderPush.id=Math.floor(Math.random() * 1000000)
              orderPush.user_id=this.user!.user_id
              orderPush.order_product_id=String(this.codeId)
              orderPush.order_code=this.generateOrderNo(10)
              orderPush.order_status=0
              if (this.remark!='') {
   
                orderPush.order_remark=this.remark
              }
              orderPush.coupon_id=this.coupon_id
              orderPush.address=this.addressInfo.address
              orderPush.nickname=this.addressInfo.nikeName
              orderPush.phone=this.addressInfo.phone
              orderPush.order_create_time=this.formatCurrentDate()
              orderPush.order_pay_time=this.formatCurrentDate()
              let num = await databaseZone.upsert(orderPush);
              hilog.info(0x0000, 'testTag', `Succeeded in upserting data, result: ${
   num}`);
              if (num>0) {
   


                for (let i = 0; i < this.productList.length; i++) {
   
                  if (this.productList[i].isNeedPay) {
   
                    let item = new cart_product_list();
                    item.id=this.productList[i].id
                    let listData = await databaseZone.delete(item);
                    hilog.info(0x0000, 'testTag', `Succeeded in upserting data, result: ${
   listData}`);
                  }
                }
                let eventData: emitter.EventData = {
   
                  data: {
   }
                };
                let innerEvent: emitter.InnerEvent = {
   
                  eventId: 1012,
                  priority: emitter.EventPriority.HIGH
                };
                emitter.emit(innerEvent, eventData);

                  router.replaceUrl({url:'pages/view/OrderSuccessPage',params:orderPush})
              }
            } else {
   
              showToast("请先选择地址")
            }
          })

到这里我们就实现了结算订单跟优惠券的关联