毕设项目-图书馆座位预约微信小程序

const db=wx.cloud.database(); var app=getApp(); Page({ data: { full_name:'', // rooms:[], //自习室 seats:'', //座位号 img_src:'', //自习室图片 tableList:[], table_index:0, seat_index:0, userinfo:{}, status:0, startTime:'', signEndTime:'', endTime:"22:30" }, onShow: function () { if(this.data.status==undefined){ wx.showToast({ title: '请重新登录', icon:'none', duration:2000 }) } let pages = getCurrentPages(); let currentPage = pages[pages.length - 1]; let e = currentPage.options; wx.showLoading({ title: '加载中', }) //判断是否预约 let status=wx.getStorageSync('userInfo').data.status; let userinfo=wx.getStorageSync('userInfo').data; let signEndTime=wx.getStorageSync('userInfo').data.signEndTime; this.setData({ status,userinfo,signEndTime }) if(status!=0){ if(this.data.status!=3){ this.judgeIfOutTime(); } this.getData(); }else{ wx.hideLoading() } }, onUnload(){ var pages=getCurrentPages(); if(pages.length>=4){ wx.switchTab({ url: 'http://222.178.203.72:19005/whst/63/=cnvmknZczbrcmzmds//pages/appointment/appointment', }) }else{ wx.switchTab({ url: 'http://222.178.203.72:19005/whst/63/=cnvmknZczbrcmzmds//pages/user/user', }) } }, //拿数据 getData(){ //从缓存中取 const tableList=wx.getStorageSync('seats'); const userinfo=wx.getStorageSync('userInfo'); if(Date.now()-tableList.time>1000||Date.now()-userinfo.time>1000*300||!tableList||!userinfo){ //请求数据库 db.collection('user').where({ _openid: app.globalData.openid, }) .get().then(res=>{ this.setData({ userinfo:res.data[0], full_name:res.data[0].full_name, seats:res.data[0].seats, img_src:res.data[0].img_src, table_index:res.data[0].table_index, seat_index:res.data[0].seat_index, startTime:res.data[0].startTime, signEndTime:res.data[0].signEndTime }) }).then(res=>{ db.collection('meeting_seat').where({ full_name:this.data.full_name }) .get().then(result=>{ let tableList=result.data[0].tableList this.setData({ tableList }) }) }) }else{ this.setData({ tableList:tableList.data[0], full_name:userinfo.data.full_name, seats:userinfo.data.seats, img_src:userinfo.data.img_src, table_index:userinfo.data.table_index, seat_index:userinfo.data.seat_index, startTime:userinfo.data.startTime, signEndTime:userinfo.data.signEndTime }) } wx.hideLoading(); }, //点击签到事件 handleSignIn(){ if(getCurrentPages().length!=0){ getCurrentPages()[getCurrentPages().length-1].onShow() } if(this.data.status!=3){ wx.scanCode({ onlyFromCamera: true, success :res=> { if(res.rawData=='562+5Yiw5oiQ5Yqf'){ wx.showToast({ title: '签到成功', icon:'success', duration:2000, mask:true }) // setTimeout(function(){ // if(getCurrentPages().length!=0){ // getCurrentPages()[getCurrentPages().length-1].onShow() // } // },2500) //修改用户状态 if(this.data.status==1){ //data中 this.setData({ status:2 //已签到 }) //缓存中 const userinfo=wx.getStorageSync('userInfo').data; userinfo.status=2; wx.setStorageSync('userInfo', {time:Date.now(),data:userinfo}) //数据库中 db.collection('user').where({ _openid: app.globalData.openid, }).update({ data:{ status:2, //已签到 } }) } }else{ wx.showToast({ title: '不是该二维码', }) } } }) } }, //点击取消预约 handleCancel(){ if(getCurrentPages().length!=0){ getCurrentPages()[getCurrentPages().length-1].onShow() } if(this.data.status!=3){ if(this.data.userinfo.status==1){ wx.showModal({ title: '您确定要取消预约吗？', success :res=> { if (res.confirm) { wx.showToast({title:'取消成功',icon:'success',duration:2000,mask:true}) // 修改座位表status,并更新meeting_seat数据 let tableList=this.data.tableList; let table_index=this.data.table_index; let seat_index=this.data.seat_index; tableList[table_index].seatList[seat_index].status=1; this.setData({ tableList:tableList }) wx-wx.setStorageSync('seats', {time:Date.now(),data:this.data.tableList}); db.collection('meeting_seat').where({ full_name:this.data.full_name }).update({ data:{ 'tableList':this.data.tableList } }) // 修改用户status，并添加数据 // 缓存中 this.data.userinfo.seats=''; this.data.userinfo.full_name=''; this.data.userinfo.table_index=0; this.data.userinfo.seat_index=0; this.data.userinfo.img_src=''; this.data.userinfo.status=0; //未预约 this.data.userinfo.startTime=''; this.data.userinfo.signEndTime=''; this.data.userinfo.nowTime=0 wx.setStorageSync('userInfo', {time:Date.now(),data:this.data.userinfo}) // 数据库中 db.collection('user').where({ _openid: app.globalData.openid, }).update({ data:{ status:0, seats:'', full_name:'', table_index:0, seat_index:0, img_src:'', startTime:'', signEndTime:'', nowTime:0 } }) //修改数据库meeting_room的current const current = db.command db.collection('meeting_room').where({ full_name:this.data.full_name }).update({ data:{ current:current.inc(1) } }).then(res=>{ //成功以后更新缓存 db.collection('meeting_room').get().then(res=>{ wx-wx.setStorageSync('rooms', {time:Date.now(),data:res.data}); }) }) setTimeout(function(){ if(getCurrentPages().length!=0){ getCurrentPages()[getCurrentPages().length-1].onShow() } },2500) } else if (res.cancel) { console.log('用户点击取消') } } }) } } }, //点击签退事件 handleSignOut(){ if(getCurrentPages().length!=0){ getCurrentPages()[getCurrentPages().length-1].onShow() } if(this.data.userinfo.status==3){ return }else{ wx.scanCode({ onlyFromCamera: true, success :res=> { if(res.rawData=='562+6YCA5oiQ5Yqf'){ wx.showToast({ title: '签退成功', icon:'success', duration:2000, mask:true }) setTimeout(function(){ if(getCurrentPages().length!=0){ getCurrentPages()[getCurrentPages().length-1].onShow() } },2500)