我想知道如何打破承诺并在满足后得到它。我提供了下面的代码，并对有问题的部分发表评论。正如你所看到的那样，我想要if语句如果满足条件我想停止进程然后返回到承诺，那就是}）。then（data =＆gt; {part。
db.employees.find({
where: {
id: req.body.employees_id
},
include: [{
model: db.work_sched,
attributes: ['id', 'code'],
include: [{
model: db.work_daysinsched,
attributes: ['id', 'day'],
where: {
day: days[theDay]
},
include: [{
model: db.shiftsched,
attributes: ['in', 'out', 'shiftType']
}]
}],
required: true
}]
}).then(data => {
data.work_sched.work_daysinsched.shiftscheds.forEach(element => {
var dateInTemp = moment(dateNow + ' ' + element.in).subtract(1, 'h');
var InHours = '0' + dateInTemp.get('hours');
var InMinutes = '0' + dateInTemp.get('minutes');
var InSeconds = '0' + dateInTemp.get('seconds');
var expectedIn = dateNow + ' ' + (InHours[InHours.length - 2] + InHours[InHours.length - 1]) + ':' + (InMinutes[InMinutes.length - 2] + InMinutes[InMinutes.length - 1]) + ':' + (InSeconds[InSeconds.length - 2] + InSeconds[InSeconds.length - 1]);
var dateOutTemp = moment(dateNow + ' ' + element.out).add(1, 'h');
var OutHours = '0' + dateOutTemp.get('hours');
var OutMinutes = '0' + dateOutTemp.get('minutes');
var OutSeconds = '0' + dateOutTemp.get('seconds');
var expectedOut = dateNow + ' ' + (OutHours[OutHours.length - 2] + OutHours[OutHours.length - 1]) + ':' + (OutMinutes[OutMinutes.length - 2] + OutMinutes[OutMinutes.length - 1]) + ':' + (OutSeconds[OutSeconds.length - 2] + OutSeconds[OutSeconds.length - 1]);
console.log('IN - 1H', expectedIn);
console.log('OUT + 1H', expectedOut);
console.log('IN', dateNow + ' ' + element.in);
console.log('OUT', dateNow + ' ' + element.out);
let attendance = db.attendance_logs.find({
where: {
date: dateNow,
shiftType: element.shiftType,
employees_id: req.body.employees_id
}
});
if (attendance == null && moment(DateTime_Now).isBetween(expectedIn, dateNow + ' ' + element.out)) {
AttendanceService.createAttendance(req, res, dateNow, timeNow, element.shiftType);
res.send({
msg: 'Successfully logged in',
success: true,
statusCode: 200
});
// it the condition is met stop the process the return to promise
// send response and then end
} else if (attendance != null && moment(DateTime_Now).isBetween(expectedIn, dateNow + ' ' + element.out)) {
res.send({
msg: 'You`re Already Logged in',
LoggedTime: attendance.dataValues.in,
success: false,
statusCode: 500
});
// it the condition is met stop the process the return to promise
// send response and then end
} else if (attendance != null && attendance.dataValues.out == null && moment(DateTime_Now).isBetween(dateNow + ' ' + element.out, expectedOut)) {
AttendanceService.logOutInExistingAttendance(req, res, timeNow, attendance.id);
res.send({
success: true,
msg: 'Successfully logged out',
statusCode: 200
});
// it the condition is met stop the process the return to promise
// send response and then end
} else if (attendance == null && moment(DateTime_Now).isBetween(dateNow + ' ' + element.out, expectedOut)) {
AttendanceService.createAttendance2(req, res, dateNow, timeNow, element.shiftType);
res.send({
success: true,
msg: 'Successfully logged out, without sign in.',
statusCode: 200
});
// it the condition is met stop the process the return to promise
// send response and then end
}
});
});
答案 0 :(得分：0)
您可以创建标志并在我们承诺时返回。我建议你需要将db.employees.find包装到一个函数中，然后我们可以在里面调用递归
function findEmployees() {
db.employees.find({
where: {
id : req.body.employees_id
},
include: [{
model: db.work_sched,
attributes: ['id', 'code'],
include : [{
model : db.work_daysinsched,
attributes : ['id', 'day'],
where :{
day : days[theDay]
},
include: [{
model : db.shiftsched,
attributes : ['in', 'out', 'shiftType']
}]
}],
required : true
}]
}).then( data => {
let promise = null;
data.work_sched.work_daysinsched.shiftscheds.forEach(element => {
var dateInTemp = moment(dateNow+' '+element.in).subtract(1,'h');
var InHours = '0'+dateInTemp.get('hours')
var InMinutes = '0'+dateInTemp.get('minutes')
var InSeconds = '0'+dateInTemp.get('seconds')
var expectedIn = dateNow +' '+(InHours[InHours.length-2]+InHours[InHours.length-1])+':'+(InMinutes[InMinutes.length-2]+InMinutes[InMinutes.length-1])+':'+(InSeconds[InSeconds.length-2]+InSeconds[InSeconds.length-1])
var dateOutTemp = moment(dateNow+' '+element.out).add(1, 'h');
var OutHours = '0'+dateOutTemp.get('hours')
var OutMinutes = '0'+dateOutTemp.get('minutes')
var OutSeconds = '0'+dateOutTemp.get('seconds')
var expectedOut = dateNow +' '+(OutHours[OutHours.length-2]+OutHours[OutHours.length-1])+':'+(OutMinutes[OutMinutes.length-2]+OutMinutes[OutMinutes.length-1])+':'+(OutSeconds[OutSeconds.length-2]+OutSeconds[OutSeconds.length-1])
console.log('IN - 1H', expectedIn)
console.log('OUT + 1H', expectedOut)
console.log('IN', dateNow+' '+element.in)
console.log('OUT', dateNow+' '+element.out)
let attendance = db.attendance_logs.find({
where:{
date : dateNow,
shiftType : element.shiftType,
employees_id : req.body.employees_id
}
})
if (promise === null) {
if(attendance == null && moment(DateTime_Now).isBetween(expectedIn,dateNow+' '+element.out)){
promise = AttendanceService.createAttendance(req, res, dateNow, timeNow, element.shiftType)
res.send({
msg: 'Successfully logged in',
success : true,
statusCode: 200
})
// it the condition is met stop the process the return to promise
// send response and then end
}else if(attendance != null && moment(DateTime_Now).isBetween(expectedIn,dateNow+' '+element.out)){
res.send({
msg: 'You`re Already Logged in',
LoggedTime: attendance.dataValues.in,
success : false,
statusCode: 500
})
// it the condition is met stop the process the return to promise
// send response and then end
}else if(attendance != null && attendance.dataValues.out == null && moment(DateTime_Now).isBetween(dateNow+' '+element.out,expectedOut)){
promise= AttendanceService.logOutInExistingAttendance(req, res, timeNow, attendance.id)
res.send({
success : true,
msg: 'Successfully logged out',
statusCode : 200
})
// it the condition is met stop the process the return to promise
// send response and then end
}else if(attendance == null && moment(DateTime_Now).isBetween(dateNow+' '+element.out,expectedOut)){
promise = AttendanceService.createAttendance2(req, res, dateNow, timeNow, element.shiftType)
res.send({
success : true,
msg: 'Successfully logged out, without sign in.',
statusCode : 200
})
// it the condition is met stop the process the return to promise
// send response and then end
}
}
})
return promise;
}).then((data) => {
findEmployees();
})
}