Promises-小程序购物车结算

  //结算提交
  checkOut : function(){
      var price = this.data.sum;
      var user = wx.getStorageSync('userInfo');
      if (!user){
        wx.showModel({
          title:'提示',
          content:'请登录',
          success : function(){

          },
        })
      }

      let goods_id=0;
      var shop = this.data.shoppingCartInfo;

      wx.request({
        url: `${app.globalData.API_URL}`+'/order',
        data:{
          goods_price : this.data.sum,
          user_id : user.mid
        },
        method: 'POST',
        header :{
          'content-type':'application/json'
        },
        success : function(res){
          var order_id = res.data;
//引入异步
          var promises = new promise(function(resolve,reject){
            resolve(shop);
        })
          promises.then(function(value){
　　　　　　//循环遍历
            value.forEach(function(value){
              console.log(value,'foreach');
            wx.request({
              url: `${app.globalData.API_URL}/ordergoods`,
              data: {
                order_id : order_id,
                goods_id : value.goodId,
                goods_name : value.goodName,
                goods_price : value.goodPrice,
                goods_num : value.goodSum,
                spec_key : value.goodImg
                },
              method: 'POST',
              success: function(res){
                console.log('成功');
              },
              fail: function(res) {

              },

            });
          });
          }).catch(function(error){
              console.error(error);
          });

        }

      })

  }