1、商品轮播图
1-1、整体流程
1、swiper组件用来放置swiper-item组件
2、swiper-item组件用来放置图片
3、image组件显示轮播图图片
4、wx:for列表循环,设置每一个图片
5、云数据库请求数据完成动态响应
1-2、根据微信开发官方文档来设计商品轮播图
1、从官方文档的组件了找到试图容器里面的swiper组件
1-3、页面设计代码
1、goods.wxml
<!--商品详情页--> <view class="container"> <view class="main"> <!--顶部轮播图--> <swiper autoplay="true" indicator-dots="true"> <block wx:for="{{goodsInfo.images}}" wx:key="index"> <swiper-item> <image src="{{item}}"></image> </swiper-item> </block> </swiper> </view> </view>
2、goods.wxss
.container{ bottom: 0; top:0; left: 0; right: 0; position: fixed; width: 100%; height: 100%; background-color: rgb(226, 233, 236); } .main{ width: 100%; height: 93%; top: 0; position: absolute; flex: 1; border: aqua solid 1px; } swiper { height: 420rpx; } swiper-item{ width: 100%; height: 100%; } swiper-item image{ width: 100%; height: 100%; }
1-4、从云数据库获取商品数据包括轮播图图片
1、goods.js
onLoad(options) { console.log('商品id:',options.goodsid) let goodsId = options.goodsid wx.cloud.database().collection('goods').doc(goodsId).get({ success: (res) => { this.setData({ goodsInfo: res.data }) console.log('商品详细:',this.data.goodsInfo) } }) }
1-5、商品轮播图效果
改进:因为图片有不同的宽高比,还有竖屏图片,所以需要对图片的宽高做一个适应,这里我选择固定高度,让宽度自适应,方法如下
在官方文档中可以看到,image标签有一个mode属性
mode里面的heightFix属性刚好满足了我们的需求
2、商品价格、标题、竞拍倒计时、发布者头像和昵称等
2-1、简陋效果
价格标题和发布者都是获取数据库的信息,每个商品绑定了一个发布者id,通过这个id去数据库找到对应的用户头像和昵称
js代码如下:
onLoad(options) { let goodsId = options.goodsid //查询商品,商品id 时上一个页面传递过来的 wx.cloud.database().collection('goods').doc(goodsId).get({ success: (res) => { this.setData({ goodsInfo: res.data }) //查询商品发布者 wx.cloud.database().collection('userInfo').doc(res.data.publisher_id).get({ success: (res) => { this.setData({ publisher: res.data }) console.log(res) } }) } }) },
wxml代码
<!--商品详情页--> <view class="container"> <scroll-view class="main"> <!--顶部轮播图--> <swiper autoplay="true" indicator-dots="true"> <block wx:for="{{goodsInfo.images}}" wx:key="index"> <swiper-item> <image src="{{item}}" mode="heightFix"></image> </swiper-item> </block> </swiper> <!--商品标题价格栏--> <view class="goodsPrice"> <view style="margin-left: 30rpx;"> <image src="/image/goodsPrice.png" style="width: 30rpx;height: 30rpx;"></image> <text style="color: rgb(179, 6, 41);font-size: 50rpx;">{{goodsInfo.current_price}} </text> <image src="{{publisher.avatarUrl}}" style="width: 50rpx;height: 50rpx;border-radius: 50%;margin-left: 40%;"></image> <text style="font-size: 40rpx;overflow: hidden;"> {{publisher.nickName}}</text> </view> <view > <text style="font-size: 30rpx;margin-left: 30rpx;">起拍价 {{goodsInfo.start_price}}</text> </view> <view> <text style="margin-left: 30rpx;"> {{goodsInfo.name}} </text> </view> </view> <!--商品发布者和竞拍记录--> <scroll-view class="goodsPublisher"> <view style="text-align: center;"> <text style="font-size: 40rpx;color: chocolate;">出价记录</text> </view> </scroll-view> <!--商品详情描述--> <view class="describe"> <rich-text>{{goodsInfo.describe}}</rich-text> </view> </scroll-view> </view>
2-2、倒计时
1、效果图
2、js代码
var goods_id
Page({
data: {
goodsInfo: null,
publisher: null,
auctionUser: null,
clock:'',
myTime: null
},
onLoad(options) {
let goodsId = options.goodsid
//将id存起来给onshow用
goods_id = goodsId
//获取商品信息
this.getGoodsInfo(goodsId)
//倒计时
this.countdown(goodsId)
},
onShow(){
this.getGoodsInfo(goods_id)
},
onUnload(){
//清楚计时器
clearInterval(this.myTime)
},
onHide(){
//清楚计时器
clearInterval(this.myTime)
},
//查询所有商品
getGoodsInfo(goodsId){
wx.cloud.database().collection('goods').doc(goodsId).get({
success: (res) => {
this.setData({
goodsInfo: res.data
})
//根据发布者id去用户表中查询商品发布者信息
wx.cloud.database().collection('userInfo').doc(res.data.publisher_id).get({
success: (res) => {
this.setData({
publisher: res.data
})
}
})
}
})
},
//获取竞拍结束时间,并计算倒计时
countdown(goodsId){
wx.cloud.database().collection('goods').doc(goodsId).get({
success: res=>{
//取出竞拍结束时间,精确到秒
let auctionEndtime = res.data.end_time
console.log(res)
//获取当前系统时间,只精确到秒
var nowTime = new Date().getTime() / 1000
//剩余时间总的秒数
var totalSecond = Math.floor(auctionEndtime - nowTime)
console.log('剩余秒数',totalSecond)
//计算倒计时
this.doCountdown(totalSecond)
}
})
},
//计算商品倒计时
doCountdown(totalSecond){
let _this = this
//每隔一秒执行一次代码
this.myTime = setInterval(function () {
//如果竞拍已经结束
if(totalSecond < 0){
_this.setData({
clock: ''
})
clearInterval(_this.myTime)
return
}else{
//执行计算
var time = _this.formatTime(totalSecond)
_this.setData({
clock: time
})
}
totalSecond --;
},1000)
},
//倒计时时间格式化
formatTime(totalSecond){
//剩余天数
var day = Math.floor(totalSecond / 3600 / 24)
//n天后剩余小时数
var hour = Math.floor(totalSecond /3600 % 24)
//n天n小时后剩余分钟数
var min = Math.floor(totalSecond / 60 % 60)
//n天n小时n分钟后剩余秒数
var sec = Math.floor(totalSecond % 60)
return day + "天" + hour + "小时" + min + "分" + sec + "秒"
}
})
4、完整功能和页面(最终版)
1、goods.wxml代码
<!--商品详情页--> <view class="container"> <scroll-view class="main" scroll-y="true"> <!--顶部轮播图--> <swiper autoplay="true" indicator-dots="true"> <block wx:for="{{goodsInfo.images}}" wx:key="index"> <swiper-item> <image src="{{item}}" mode="heightFix"></image> </swiper-item> </block> </swiper> <!--商品标题价格栏--> <view class="goodsPrice"> <view style="margin-left: 30rpx;display: flex;align-items: center;"> <image src="/image/goodsPrice.png" style="width: 30rpx;height: 30rpx;"></image> <text style="color: rgb(179, 6, 41);font-size: 50rpx;">{{goodsInfo.current_price}} </text> <!--倒计时--> <text wx:if="{{clock == '已经截止'}}" style="margin-left: 60%;color: crimson;">{{clock}}</text> <text wx:else="" style="margin-left: 12%;font-size: 45rpx;color: crimson;">{{clock}}</text> </view> <view style="display: flex;overflow: hidden;white-space: nowrap;text-overflow: ellipsis; align-items: center;"> <text style="font-size: 30rpx;margin-left: 30rpx;">起拍价 {{goodsInfo.start_price}}</text> <image src="{{publisher.avatarUrl}}" style="width: 50rpx;height: 50rpx;border-radius: 50%;margin-left: 35%;"></image> <text style="font-size: 30rpx;margin-left: 10epx;" decode="true"> {{publisher.nickName}} </text> </view> <view> <text style="margin-left: 30rpx;"> {{goodsInfo.name}} </text> </view> </view> <!--商品发布者和竞拍记录--> <scroll-view class="goodsAuctionRecord"> <view style="text-align: center;"> <text style="font-size: 40rpx;color: chocolate;">出价记录</text> </view> <!--出价的用户--> <block wx:for="{{auctionRecord}}" wx:key="index"> <view> <text style="font-size: 24rpx;">{{item.auctionTimeFormat}}</text> <image src="{{item.userInfo.avatarUrl}}" style="width: 40rpx;height: 40rpx;border-radius: 50%;margin-left: 5%;"></image> <text decode="true"> {{item.userInfo.nickName}} 出价了</text> <text style="color: crimson; font-size: 40rpx;">{{item.putPrice}} 元</text> </view> </block> </scroll-view> <!--商品详情描述--> <view class="describe"> <rich-text>{{goodsInfo.describe}}</rich-text> </view> </scroll-view> <!--底部--> <view class="bottomContainer"> <view> <image src="/image/jianhao.png" class="changePriceIcon" bindtap="downPrice"></image> <text class="addPrice">{{changePrice}}元</text> <image src="/image/add.png" class="changePriceIcon" style="width: 67rpx;height: 67rpx;margin-left: 36%;" bindtap="addPrice"></image> <text style="height: 100rpx;float: right;background-color: tomato;padding: 20rpx 40rpx;color: white;" bindtap="putPrice">出个价</text> </view> </view> </view>
2、goods.wxss代码
.container { bottom: 0; top: 0; left: 0; right: 0; position: fixed; width: 100%; height: 100%; background-color: rgba(232, 234, 235, 0.89); } .main { width: 100%; height: 93%; top: 0; position: absolute; flex: 1; background-color: rgb(221, 221, 204); } swiper { height: 430rpx; background-color: white; } swiper-item { text-align: center; width: 100%; height: 100%; } swiper-item image { border-radius: 15rpx; height: 100%; } .goodsPrice { margin-top: 15rpx; width: 96%; margin-left: 2%; border-radius: 25rpx; border: aliceblue solid 1px; background-color: aliceblue; box-shadow: 4px 4px 15px rgb(180, 223, 202); } .goodsAuctionRecord { margin-top: 15rpx; width: 96%; height: auto; margin-left: 2%; border-radius: 25rpx; border: rgb(235, 238, 241) solid 1px; background-color: aliceblue; box-shadow: 4px 4px 15px rgb(180, 223, 202); } .describe { margin-top: 15rpx; width: 96%; margin-left: 2%; border-radius: 25rpx; border: rgb(235, 238, 241) solid 1px; background-color: aliceblue; box-shadow: 4px 4px 15px rgb(180, 223, 202); } .bottomContainer { position: absolute; top: 93%; width: 100%; height: 5%; white-space: nowrap; word-break:keep-all; } .addPrice { position: fixed; background-color: rgb(8, 8, 8); color: white; border-radius: 30px; margin-left: 4%; margin-top: 17rpx; padding: 10rpx 10% 10rpx 10%; } .changePriceIcon{ width: 60rpx; height: 60rpx; margin-left: 4%; padding-top: 12rpx; }
3、goods.js代码
var goods_id var myTime //计数器 Page({ data: { goodsInfo: null, publisher: null, auctionRecord: null, clock: '', changePrice: null //出价 }, onLoad(options) { let goodsId = options.goodsid //将id存起来给onshow用 goods_id = goodsId //获取商品信息 this.getGoodsInfo(goodsId) //倒计时 this.countdown(goodsId) }, onShow() { this.getGoodsInfo(goods_id) this.getAuctionRecord() }, onUnload() { //清楚计时器 clearInterval(myTime) }, onHide() { //清楚计时器 clearInterval(myTime) }, //查询所有商品 getGoodsInfo(goodsId) { wx.cloud.database().collection('goods').doc(goodsId).get({ success: (res) => { this.setData({ goodsInfo: res.data, changePrice: res.data.current_price + 1 }) //根据发布者id去用户表中查询商品发布者信息 wx.cloud.database().collection('userInfo').doc(res.data.publisher_id).get({ success: (res) => { this.setData({ publisher: res.data }) } }) } }) }, //底部加减价格 addPrice() { var price = this.data.changePrice price++ this.setData({ changePrice: price }) }, downPrice() { var price = this.data.changePrice if (price > this.data.goodsInfo.current_price + 1) { price-- this.setData({ changePrice: price }) } else { wx.showToast({ title: '出价应当高于当前价!', icon: 'none' }) } }, //竞拍者出价 putPrice() { //获取出价 let price = this.data.changePrice //获取出价用户 let userInfo = wx.getStorageSync('userInfo') //获取出价时间 let nowTime = new Date().getTime() //转化为时间格式 var util = require("../../util/time_transform.js") let timeFormat = util.js_date_time(nowTime) //弹窗确认 wx.showModal({ title: '确认出价', content: '价高者得,竞拍结束价高者可在竞拍记录中查看卖家联系信息,感谢您的参与!', success: (res) => { if (res.confirm) { wx.showLoading({ title: '正在出价...', }) //保存竞拍记录到数据库 wx.cloud.database().collection('goodsAuctionRecord').add({ data: { goodsID: goods_id, userInfo: userInfo, putPrice: price, auctionTime: nowTime, auctionTimeFormat: timeFormat }, success: res => {} }), //更新当前价 wx.cloud.database().collection('goods').doc(goods_id).update({ data: { current_price: price } }) let _this = this setTimeout(function () { wx.hideLoading({ success: (res) => { //刷新页面数据 _this.onShow() } }) }, 1000) } else { console.log('取消') } } }) }, //获取商品用户竞拍记录 getAuctionRecord() { wx.cloud.database().collection('goodsAuctionRecord').where({ goodsID: goods_id }).get({ success: (res) => { this.setData({ auctionRecord: res.data }) } }) }, //获取竞拍结束时间,并计算倒计时 countdown(goodsId) { wx.cloud.database().collection('goods').doc(goodsId).get({ success: res => { //取出竞拍结束时间,精确到秒 let auctionEndtime = res.data.end_time console.log(res) //获取当前系统时间,只精确到秒 var nowTime = new Date().getTime() / 1000 //剩余时间总的秒数 var totalSecond = Math.floor(auctionEndtime - nowTime) console.log('剩余秒数', totalSecond) //计算倒计时 this.doCountdown(totalSecond) } }) }, //计算商品倒计时 doCountdown(totalSecond) { let _this = this //每隔一秒执行一次代码 myTime = setInterval(function () { //如果竞拍已经结束 if (totalSecond < 0) { _this.setData({ clock: '已经截止' }) clearInterval(myTime) return } else { //执行计算 var time = _this.formatTime(totalSecond) _this.setData({ clock: '剩余' + time }) } totalSecond--; }, 1000) }, //倒计时时间格式化 formatTime(totalSecond) { //剩余天数 var day = Math.floor(totalSecond / 3600 / 24) //n天后剩余小时数 var hour = Math.floor(totalSecond / 3600 % 24) //n天n小时后剩余分钟数 var min = Math.floor(totalSecond / 60 % 60) //n天n小时n分钟后剩余秒数 var sec = Math.floor(totalSecond % 60) return day + "天" + hour + "小时" + min + "分" + sec + "秒" } })
4、时间转化js代码
在util 下面新建一个time_transform.js文件
//时间戳转换成日期时间,传入时间精确到毫秒 function js_date_time(unixtime) { var date = new Date(unixtime) var y = date.getFullYear(); var m = date.getMonth() + 1; m = m < 10 ? ('0' + m) : m; var d = date.getDate(); d = d < 10 ? ('0' + d) : d; var h = date.getHours(); h = h < 10 ? ('0' + h) : h; var minute = date.getMinutes(); var second = date.getSeconds(); minute = minute < 10 ? ('0' + minute) : minute; second = second < 10 ? ('0' + second) : second; return y + '-' + m + '-' + d + ' ' + h + ':' + minute + ':' + second;//年月日时分秒 // return y + '-' + m + '-' + d + ' ' + h + ':' + minute; // return y + '-' + m + '-' + d; } module.exports = { js_date_time: js_date_time }
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