applet_nongchang/template/cash/index.js

const app = getApp();

Page({
  authdialog: null,
  product_ids: '',
  cash_code: '',
  data: {
    isUseAddress: false,
    settlement: 0.00
  },
  onLoad: function (options) {
    var that = this;
    app.showLoading();
    //获取自定义授权组件
    this.authdialog = this.selectComponent("#authdialog");
    //获取兑换商品信息
    this.cash_code = options.code;
    app.request('product.api.checkCode',{
        code: that.cash_code
      },{
        success: function(data, res){
          app.setList(that, data.product);
          that.doSettlement();
          app.hideLoading();
        }
    })
  },

  /**
   * 结算金额
   */
  doSettlement: function(){
    var list = this.data.list;
    var count=0;
    for(var i=0; i<list.length; i++){
      var product_id = list[i].id;
      var pay_price = list[i].pay_price;
      count += pay_price*1;
      if(i==0){
        this.product_ids += product_id;
      }else{
        this.product_ids += ',' + product_id;
      }
    }
    app.set(this, 'settlement', count.toFixed(2));
  },

  /**
   * 立即兑换
   */
  doCash: function(e){
    var that = this;
    var addrObj = this.data.addrObj;
    if (!addrObj) {
      app.toast('请选择收货地址');
    }
    app.request('product.api.code',{
      product_id: that.product_ids,
      code: that.cash_code,
      name: addrObj.userName,
      address: addrObj.provinceName + addrObj.cityName + addrObj.countyName + addrObj.detailInfo,
      mobile: addrObj.telNumber,
      invite_uid: app.getInviteUid()
    },{
      success:function(data, res){
        app.saveInviteUid('');
        var id = that.product_ids;
        let idx = id.indexOf(',');
        if (idx > -1) {
          id = id.substring(0, idx);
        }
        app.redirect('pay/index?id=' + id);
      },
      fail: function(res){
        app.toast('兑换失败！');
      }
    })
  },

  /**
   * 使用微信地址
   */
  chooseAddress: function(event){
    var that = this;
    var success = function(){
      wx.chooseAddress({
        success: function (res) {
          app.set(that,'addrObj', res);
          app.set(that,'isUseAddress', true);
        }
      })
    }
    wx.getSetting({
      success: function(res){
        if (res.authSetting['scope.address']){
          success();
        }else{
          wx.authorize({
            scope: 'scope.address',
            success: function () {
              success();
            },
            fail: function(res){
              that.authdialog.showDialog();
            }
          })
        }
      }
    })
  }
})