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310 lines
7.4 KiB
310 lines
7.4 KiB
// pages/cart/cart.js
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const db = wx.cloud.database({});
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const app=getApp()
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const userid=app.globalData.openid
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Page({
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/**
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* 页面的初始数据
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*/
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data: {
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cartlistsee:[], //该用户购物车的数组
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total_all_price:0, //商品的总价格
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all_shop: 0, //所选商品的id
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shop_num: 0, //所选商品的数量
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good_one: [], //单个商品的数据
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checked: false, //是否为全选
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is_shop: false, //是否有商品
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shopData: null,
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Selection:{}
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},
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/**点击单个多选框 */
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allCheckbox: function(tap) {
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var a = 0 //设置初始总价格
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var index = tap.currentTarget.dataset.index
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console.log(index)//获取索引值
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let good = this.data.cartlistsee //获取购物车列表
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const checks = good[index].checks; //获取当前商品的选中状态
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good[index].checks = !checks //改变当前商品的状态
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console.log(checks)
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var all_shop_1 = parseInt(good[index]._id) //获取商品的购物车id
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var shop_num_1 = good[index].num //获取商品的数量
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this.setData({
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cartlistsee: good
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});
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this.getTotalPrice() //重新获取总价格
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/*设置全选 */
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},
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/**点击全选 */
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setChecked: function() {
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let checked = this.data.checked; //是否为全选状态
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checked = !checked; //改变状态
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let cartlistsee = this.data.cartlistsee;
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for (let i = 0; i < cartlistsee.length; i++) {
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cartlistsee[i].checks = checked; // 改变所有商品状态
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}
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this.setData({
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checked: checked, //更新全选状态
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cartlistsee: cartlistsee //更新所有商品的状态
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});
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this.getTotalPrice(); //重新获取总价格
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},
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//计算商品总价格
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getTotalPrice() {
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let good = this.data.cartlistsee; // 获取购物车列表
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let total = 0;
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for (let i = 0; i < good.length; i++) { // 循环列表得到每个数据
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if (good[i].checks) { // 判断选中才会计算价格
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total += good[i].num * good[i].price; // 所有价格加起来
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}
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}
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this.setData({ // 最后赋值到data中渲染到页面
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good: good,
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total_all_price: total.toFixed(2),
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});
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},
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//点击结算订单
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toBuy: function(tap) {
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var that = this;
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let good = this.data.cartlistsee; //所有商品数据
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let user_info = wx.getStorageSync('user_data')
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if (that.data.total_all_price == 0) { //判断是否选择了商品，这里我是判断总价格
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wx.showToast({
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title: '请选择商品',
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})
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} else {
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this.data.good_one = []; //重置数组
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for (var i = 0; i < this.data.cartlistsee.length; i++) { //循环购物车中的商品
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if (good[i].checks == true) {
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var Selection=[]
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var good_one1 = {}
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good_one1._id=good[i]._id
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good_one1.url=good[i].url
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good_one1.food_name=good[i].food_name
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good_one1.food_shop=good[i].food_shop
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good_one1.price=good[i].price
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good_one1.num=good[i].num
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var all=this.data.total_all_price
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Selection.push(good_one1)
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this.setData({
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Selection:Selection
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})
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//将数据添加到数组里边
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this.getTotalPrice()
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wx.navigateTo({
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url:'/pages/paying/paying?info='+JSON.stringify(Selection)+'&totalprice='+this.data.total_all_price
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})
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}
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}}},
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topay: function(){
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},
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// 添加按钮被点击
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addButtonClick: function(event) {
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var that = this;
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const index = event.currentTarget.id;
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console.log(index)//获取缓存里面的用户信息
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let cartlistsee = this.data.cartlistsee;//购物车所有的商品数据
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console.log(cartlistsee)
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console.log(cartlistsee[index])
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let num =cartlistsee[index].num//获取购买数量
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num=num+1
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cartlistsee[index].num= num;
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that.setData({
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cartlistsee:cartlistsee //更新商品数据
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})
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console.log(cartlistsee)
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db.collection('user').
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where({
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"_openid":userid
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}) //还需修改
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.update(
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{
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data:{
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['cartlist.'+[index]]:{num}
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}
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}
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)
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this.getTotalPrice()
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},
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reduceButtonClick: function(event) {
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var that = this;
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const index = event.currentTarget.id;
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console.log(index)//获取缓存里面的用户信息
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let cartlistsee = this.data.cartlistsee;//购物车所有的商品数据
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console.log(cartlistsee)
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console.log(cartlistsee[index])
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let num =cartlistsee[index].num//获取购买数量
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if(num == 1){
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wx.showModal({
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title: '提示',
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content: '已是最后一件商品',
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})
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}
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else{//如果商品数量不等于 1
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num=num-1
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cartlistsee[index].num= num;
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that.setData({
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cartlistsee:cartlistsee //更新商品数据
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})
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console.log(cartlistsee)
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db.collection('user')//回调回云数据库
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.where({
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"_openid":userid
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}) //还需修改
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.update(
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{
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data:{
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['cartlist.'+[index]]:{num}
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}
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}
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)
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this.getTotalPrice()
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}
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},
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//删除单个商品
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deleteGoods(event) {
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var that = this;
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const index = event.currentTarget.id;
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console.log(index)
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let cartlistsee = this.data.cartlistsee;//购物车所有的商品数据
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let foodid=cartlistsee[index]._id
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console.log(foodid)
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wx.showModal({
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title: '温馨提示',
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content: '确定删除当前商品吗？',
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confirmColor: "#f00",
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success: (res) => {
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if (res.confirm) {
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cartlistsee.splice(index, 1);
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this.setData({
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cartlistsee:cartlistsee
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})
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db.collection('user')//回调回云数据库
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. where({
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"_openid":userid
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})
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.update(
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{
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data:{
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['cartlist.'+[index]]:db.command.remove(),
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}
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})
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db.collection('user')//回调回云数据库
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.where({
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"_openid":userid
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})
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.update(
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{
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data:{
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['cartlist']:this.data.cartlistsee
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}
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}
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)
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}}
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})
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this.getTotalPrice()
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console.log(cartlistsee)
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},
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/**
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* 生命周期函数--监听页面加载
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*/
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onLoad:function(options) {
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const db = wx.cloud.database({
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//这个是环境ID不是环境名称
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env: 'cloud1-8g5wmepxce8a3b8a'
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})
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//2、开始查询数据了 news对应的是集合的名称
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db.collection("user")
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.where({
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"_openid":userid
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})
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.get()
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.then(res => {
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console.log("列表页", res.data);
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console.log(res.data[0].cartlist)
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//再次显示数据
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this.setData({
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cartlistsee:res.data[0].cartlist,
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total_all_price: 0,
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checked: false
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})
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})
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.catch(err => {
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console.log("加载失败", err);
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})
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},
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/**
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* 生命周期函数--监听页面初次渲染完成
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*/
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onReady() {
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},
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/**
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* 生命周期函数--监听页面显示
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*/
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onShow() {
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},
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/**
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* 生命周期函数--监听页面隐藏
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*/
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onHide() {
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},
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/**
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* 生命周期函数--监听页面卸载
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*/
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onUnload() {
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},
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/**
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* 页面相关事件处理函数--监听用户下拉动作
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*/
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onPullDownRefresh() {
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this.onRefresh();
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},
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onRefresh:function(){
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//导航条加载动画
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wx.showNavigationBarLoading({
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title:'loading'
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})
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;
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setTimeout(function () {
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wx.hideNavigationBarLoading();
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//停止下拉刷新
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wx.stopPullDownRefresh();
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}, 2000);
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},
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/**
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* 页面上拉触底事件的处理函数
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*/
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onReachBottom() {
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console.log("上拉加载....");
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},
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/**
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* 用户点击右上角分享
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*/
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onShareAppMessage() {
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}
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}) |