微信小程序（看文档写实例五）微信小程序课堂宝APP实现获取签到列表

// 获得当前用户的签到记录

getSignRecord:function(){

if(app.globalData.currentUser == null)return;

wx.showToast({

title: '更新签到记录',

icon: 'loading',

duration: 10000

});

// 1、查询老师的ID

var queryTeacher = Bmob.Query('_User');

queryTeacher.equalTo("userType", '==', 1);

queryTeacher.find().then(resTeacher=>{

var teacher = resTeacher[0];

// 2、查询老师的签到记录

var queryTeacherSignRecord = Bmob.Query('sign_record');

queryTeacherSignRecord.order("-numberNo");

var teacherPointer = Bmob.Pointer('_User')

var teacherPointId = teacherPointer.set(teacher.objectId);

queryTeacherSignRecord.equalTo("userId", '==', teacherPointId);

queryTeacherSignRecord.find().then(resTeacherSignRecord => {

// 老师无签到记录，学生肯定也没有签到记录

if (resTeacherSignRecord.length==0){

wx.hideToast();

return;

}

// 签到记录

var signRecord = [];

// 如果是老师用户，直接显示

if (app.globalData.currentUser.userType==1){

for (var i = 0; i < resTeacherSignRecord.length; i++) {

signRecord[i] = {

date: resTeacherSignRecord[i].createdAt.split(' ')[0],

numberNo: resTeacherSignRecord[i].numberNo,

signFlag: true

}

}

wx.hideToast();

//把记录保存并渲染界面

that.setData({ mSignRecord: signRecord });

}

// 如果是学生用户

else{

// 3、查询学生签到记录

var queryStudentSignRecord = Bmob.Query('sign_record');

queryStudentSignRecord.order("-numberNo");

var pointer = Bmob.Pointer('_User');

var poiID = pointer.set(app.globalData.currentUser.objectId);

queryStudentSignRecord.equalTo("userId", '==', poiID);

queryStudentSignRecord.find().then(resStudentSignRecord => {

console.log(resStudentSignRecord);

// 学生的签到记录和老师的一样，说明学生每次都完成签到

if (resStudentSignRecord.length == resTeacherSignRecord.length) {

for (var i = 0; i < resStudentSignRecord.length; i++) {

signRecord[i] = {

date: resTeacherSignRecord[i].createdAt.split(' ')[0],

numberNo: resTeacherSignRecord[i].numberNo,

signFlag: true

}

}

}

// 学生少签到则以老师签到为准

else {

for (var i = 0; i < resTeacherSignRecord.length; i++) {

var flag = false;

// 老师的签到在学生的签到表中，说明学生签到了

if (that.isNumberNoInStudentSignRecord(resTeacherSignRecord[i].numberNo, resStudentSignRecord) == true){

flag = true;

}

// 提示有最新签到

if (i == resTeacherSignRecord.length - 1){

that.setData({ signFlag: flag, signNumber: i + 1});

}

signRecord[i] = {

date: resTeacherSignRecord[i].createdAt.split(' ')[0],

numberNo: resTeacherSignRecord[i].numberNo,

signFlag: flag

}

}

}

wx.hideToast();

//把记录保存并渲染界面

that.setData({ mSignRecord: signRecord });

// 不再刷新

that.data.selectedScrollItemsLoadingComplete[0] = true;

that.setData({selectedScrollItemsLoadingComplete: that.data.selectedScrollItemsLoadingComplete });

}).catch(err => { });

}

}).catch(err=>{});

}).catch(err=>{});

},

// 设定定时器为0.5秒，直到获得到用户信息才执行签到列表逻辑

var getCurrentUserResult = setInterval(function () {

if (app.globalData.currentUser == null) {

var current = Bmob.User.current();

if (current != null) {

app.setGlobalData({ currentUser: current });

}

}

else {

// 清除定时器

clearInterval(getCurrentUserResult);

wx.hideToast();

// 加载签到列表

that.getSignRecord();

}

}, 500);