第六章 “我要点爆”微信小程序云开发实例之爆文详情页制作
爆文详情页制作
从首页中数据列表打开相应详情页面的方法：
给数据列表中每个数据项加一个点击事件，同时将当前数据项的id暂时记录在本地，然后跳转到详情页面detail
goopen: function (e) {
//获取当前内容的标识id，保存，方便进入查询
var id = e.currentTarget.id
wx.setStorageSync('id', id)
wx.navigateTo({
url: '../detail/detail',
});
},
在detail页面中的onLoad函数中对当前本地记录的爆文id进行查询，获取爆文详情数据
//取出标识id，查询
var id = wx.getStorageSync('id')
// 查询数据，初始化数据和判断值wy
db.collection('bao').where({
_id: id
}).get()
爆文转发功能实现
使用onShareAppMessage函数，title转发标题，path当前页面地址，path中页面路径后我们添加爆文的id为页面携带的参数，使得转发唯一
//分享
onShareAppMessage: function () {
var detailId = this.data.detail._id
var id = wx.getStorageSync('id')
return {
title: '我要点爆',
desc: '帮我点爆',
path: '/pages/detail/detail?id=' + id + "1",
}
}
app.json中增加详情页detail路径，编译创建详情页
<!--pages/detail/detail.wxml-->
<block wx:if="{{detail.text}}">
<view class="the_top">
<view class="top_left">
<text space="ensp">性 别：</text>
<text>情绪颜色：</text>
<text>点爆类型：</text>
<text>点爆方式：</text>
<text>点爆时间：</text>
</view>
<view class="top_right">
<text>{{detail.gender}}</text>
<text>{{detail.wmood}}</text>
<text>文爆</text>
<text>{{detail.wway}}</text>
<text>{{detail.time}}</text>
</view>
</view>
<view class="the_mid">
<scroll-view scroll-y="true" scroll-x="false" scroll-with-animation="true">
<view>
<text>{{detail.text}}</text>
</view>
<block wx:if="{{detail.baofilename}}">
<view class="yuimage">
<image src="/images/yuyin4.png" bindtap="playtwo"></image>
</view>
</block>
</scroll-view>
</view>
<view class="the_button">
<button bindtap="boost">{{boostText}}</button>
</view>
<view class="the_bottom">
<view class="bottom_one">
<image src="/images/re.png"></image>
<text>{{temperature}}</text>
</view>
<view class="bottom_two" bindtap="collect">
<image src="{{collectimage}}"></image>
<text>{{collectText}}</text>
</view>
</view>
</block>
<block wx:if="{{detail.filename}}">
<view class="the_top">
<view class="top_left">
<text space="ensp">性 别：</text>
<text>情绪颜色：</text>
<text>点爆类型：</text>
<text>点爆方式：</text>
<text>点爆时间：</text>
</view>
<view class="top_right">
<text>{{detail.gender}}</text>
<text>{{detail.ymood}}</text>
<text>音爆</text>
<text>{{detail.yway}}</text>
<text>{{detail.time}}</text>
</view>
</view>
<view class="the_mid">
<view class="yuyin">
<image src="/images/yuyin3.png" class="image1 {{im1?'bb':''}}" bindtap="playone"></image>
<block wx:if="{{detail.baofilename}}">
<image src="/images/yuyin4.png" class="image2 {{im2?'bb':''}}" bindtap="playtwo"></image>
</block>
</view>
</view>
<view class="the_button">
<button bindtap="boost">{{boostText}}</button>
</view>
<view class="the_bottom">
<view class="bottom_one">
<image src="/images/re.png"></image>
<text>{{temperature}}</text>
</view>
<view class="bottom_two" bindtap="collect">
<image src="{{collectimage}}"></image>
<text>{{collectText}}</text>
</view>
</view>
</block>
detail.js完整代码
const db = wx.cloud.database();
var _innerAudioContext;
Page({
data: {
detail: {},//存储数据
userInfo: {},
temperature: 0,//热度
boost: true,//判断是助爆还是取消助爆
boostText: '助爆',//控制助爆按钮
wy: 1,//判断是文爆还是音爆，为相应数据库更新
collectimage: '/images/shoucang.png',//收藏图标
collectText: '收藏',//判断收藏文字变化
fileIDd: '',//爆炸之音
fileIDy: '',//语音
theplay: true,//判断是否在播放声音,
im1: false,//控制显示语音播放样式
im2: false,
boostNumber: 0,
},
//助爆
boost: function () {
//向助爆表中增加,传入这两个值方便保存，和查找删除
var detailId = this.data.detail._id
var openId = wx.getStorageSync('openId')
if (this.data.boost) {
//调用云函数，修改热度数量，向云函数传值，对bao数据库更新
wx.cloud.callFunction({
name: 'updateBoost',
data: {
id: this.data.detail._id,
temperature: this.data.temperature,
boost: this.data.boost,
detailId: detailId,
openId: openId
},
success: res => {
var detailId = this.data.detail._id
db.collection('boost').add({
data: {
detailId: detailId
},
success: function () {
console.log('增加成功')
},
fail: function (e) {
console.error(e)
}
})
this.setData({
boost: false,
boostText: '已助爆',
temperature: this.data.temperature + 10
})
wx.showToast({
title: '助爆成功',
})
}
})
} else {
//调用云函数，修改热度数量，向云函数传值
wx.cloud.callFunction({
name: 'updateBoost',
data: {
id: this.data.detail._id,
temperature: this.data.temperature,
boost: this.data.boost,
detailId: detailId,
openId: openId
},
success: res => {
this.setData({
boost: true,
boostText: '助爆',
temperature: this.data.temperature - 10
})
wx.showToast({
title: '已取消助爆',
})
}
})
}
},
//收藏按钮
collect: function () {
//在异步success中不能用this要用var that
var that = this
var detailId = this.data.detail._id
//变换收藏
if (this.data.collectText == '收藏') {
var img = '/images/usercang.png'
var detailId = this.data.detail._id
db.collection('collect').add({
data: {
detailId: detailId
},
success: function () {
that.setData({
collectimage: img,
collectText: '已收藏'
})
console.log('收藏成功')
},
fail: function (e) {
console.log(e)
}
})
} else {
var img = '/images/shoucang.png'
wx.cloud.callFunction({
name: 'removeCollect',
data: {
id: this.data.detail._id,
openId: wx.getStorageSync('openId')
},
success: res => {
that.setData({
collectimage: img,
collectText: '收藏'
})
console.log('取消收藏')
}
})
}
},
//第一个语音按钮播放
playone: function () {
if (this.data.theplay) {
this.setData({
theplay: false,
im1: true,
})
const innerAudioContext = wx.createInnerAudioContext()
_innerAudioContext = innerAudioContext
innerAudioContext.autoplay = true
innerAudioContext.src = this.data.detail.fileIDy
innerAudioContext.onPlay(() => {
console.log('开始播放')
}),
innerAudioContext.onEnded(() => {
this.setData({
theplay: true,
im1: false,
})
})
innerAudioContext.onError((res) => {
console.log(res.errMsg)
})
}
},
//第二个语音按钮播放
playtwo: function () {
if (this.data.theplay) {
this.setData({
theplay: false,
im2: true,
})
const innerAudioContext = wx.createInnerAudioContext()
_innerAudioContext = innerAudioContext
innerAudioContext.autoplay = true
innerAudioContext.src = this.data.detail.fileIDd
innerAudioContext.onPlay(() => {
console.log('开始播放')
}),
innerAudioContext.onEnded(() => {
this.setData({
theplay: true,
im2: false,
})
})
innerAudioContext.onError((res) => {
console.log(res.errMsg)
console.log(res.errCode)
})
}
},
//如果页面被卸载时被执行，关掉所有正在播放的语音
onUnload: function () {
if (_innerAudioContext){
_innerAudioContext.stop();
}
},
//查询出点爆数据，并初始化各个需要用的参数
onLoad: function () {
wx.showLoading({
title: '加载中',
mask: true
})
var that = this
//取出标识id，查询
var id = wx.getStorageSync('id')
// 查询数据，初始化数据和判断值wy
db.collection('bao').where({
_id: id
}).get({
success: res => {
var wy = 1
if (res.data[0].text) {
wy = 1
} else {
wy = 2
}
that.setData({
detail: res.data[0],
temperature: res.data[0].temperature,
wy: wy
})
//查询当前文章是不是当前用户已经收藏的，如果是变换收藏图标
db.collection('collect').where({
_openid: wx.getStorageSync('openId'),
detailId: this.data.detail._id
}).get({
success(res) {
//如果返回值存在且有数据
if (res.data && res.data.length > 0) {
var img = '/images/usercang.png'
that.setData({
collectimage: img,
collectText: '已收藏'
})
}
}
})
//查询当前文章是不是当前用户已经助爆
db.collection('boost').where({
_openid: wx.getStorageSync('openId'),
detailId: this.data.detail._id
}).get({
success(res) {
//结束加载按钮
wx.hideLoading()
//如果返回值存在且有数据
if (res.data && res.data.length > 0) {
that.setData({
boost: false,
boostText: '已助爆'
})
}
}
})
}
});
},
//分享
onShareAppMessage: function () {
var detailId = this.data.detail._id
var id = wx.getStorageSync('id')
return {
title: '我要点爆',
desc: '帮我点爆',
path: '/pages/detail/detail?id=' + id + "1",
}
}
})
新建助爆记录集合boost和收藏记录集合collect
两个集合的结果如下：
| 字段名 | 数据类型 | 主键 | 非空 | 描述 |
|---|---|---|---|---|
| _id | String | 是 | 是 | ID |
| _openid | String | 是 | 用户唯一标识 | |
| time | String | 用户签到时间 |
新建助爆时修改热度值的云函数updateBoost，用于修改爆文热度和删除爆文
// 云函数入口文件
const cloud = require('wx-server-sdk')
cloud.init()
//声明数据库
const db = cloud.database()
// 云函数入口函数
exports.main = async (event, context) => {
//取得传过来的参数
var temperature = event.temperature,
id = event.id,
boost = event.boost,
detailId = event.detailId,
openId = openId;
if (boost) {
temperature = temperature + 10
} else {
temperature = temperature - 10
try {
db.collection('boost').where({
openId: openId,
detailId: detailId,
}).remove()
} catch (e) {
console.error(e)
}
}
try {
return await db.collection('bao').where({
_id: id
}).update({
data: {
temperature: temperature
},
success: res => {
console.log('云函数成功')
},
fail: e => {
console.error(e)
}
})
} catch (e) {
console.error(e)
}
}
新建收藏取消收藏的云函数removeCollect，用于删除收藏集合中的数据
// 云函数入口文件
const cloud = require('wx-server-sdk')
cloud.init()
//声明数据库
const db = cloud.database()
// 云函数入口函数
exports.main = async (event, context) => {
//取得传过来的参数
var openId = event.openId,
id = event.id;
try {
return await db.collection('collect').where({
_openid: openId,
detailId: id
}).remove()
} catch (e) {
console.error(e)
}
}
运行结果
至此，“我要点爆”微信小程序云开发实例项目的主要功能和所用知识点就都讲解完了，下面的我的页面的签到、收藏、助爆、封存和点爆记录就由大家自己来实现吧！
