Firebase云函数返回2个集合的数据
Firebase云函数返回2个集合的数据
提问于 2019-09-19 19:14:47
我已经编写了这两个云函数来在Cloud Firestore中发布数据，它们工作得很好。现在，我需要编写一个Cloud函数，该函数应该获取上面创建的两个集合的数据以发布数据。数据应该放在一个新对象中并合并在一起
所需JSON输出：
[
{
"course": "xxx";
"client": "hello";
"location": "lahore";
"instructor": "ahsan";
"bidding": true;
"price": "400";
"totalHours": "15";
"maxStudents": "30",
"listing": true,
"closeDays": "20",
"assistants": "hassan",
"publicNotes": "nothing to say",
"internalNotes": "nothing to say",
"course": "xxx",
"date": "25/9/2019",
"hour": "3",
"minute": "15",
"timeofday": "PM",
"tohour": "6",
"tominute": "15",
"totimeofday": "PM"
}
]//排课
exports.scheduleClass = functions.https.onRequest((req, res) => {
res.set('Access-Control-Allow-Origin', '*');
res.set('Access-Control-Allow-Methods', 'GET', 'POST');
res.set('Access-Control-Allow-Headers', 'Content-Type');
if (req.method === 'OPTIONS') {
res.end();
}
else
{
if(req.body.course != null && req.body.client != null && req.body.location != null && req.body.instructor != null && req.body.bidding != null
&& req.body.price != null && req.body.totalHours != null && req.body.maxStudents != null && req.body.listing != null && req.body.closeDays != null
&& req.body.assistants != null && req.body.publicNotes != null && req.body.internalNotes != null
|| req.body.course != undefined && req.body.client != undefined && req.body.location != undefined && req.body.instructor != undefined && req.body.bidding != undefined
&& req.body.price != undefined && req.body.totalHours != undefined && req.body.maxStudents != undefined && req.body.listing != undefined
&& req.body.closeDays != undefined && req.body.assistants != undefined && req.body.publicNotes != undefined && req.body.internalNotes != undefined) {
let docId = Math.floor(Math.random() * (99999 - 00000));
let newClass = {
"course": req.body.course,
"client": req.body.client,
"location": req.body.location,
"instructor": req.body.instructor,
"bidding": req.body.bidding,
"price": req.body.price,
"totalHours": req.body.totalHours,
"maxStudents": req.body.maxStudents,
"listing": req.body.listing,
"closeDays": req.body.closeDays,
"assistants": req.body.assistants,
"publicNotes": req.body.publicNotes,
"internalNotes": req.body.internalNotes
}
usersClasses.add(newClass).then(snapshot => {
res.send(200, {
"message": "Class was successfully created"
})
});
} else {
res.send(400, {
"message": "All fields are required"
})
}
}
});//添加类的时间
exports.addTimes = functions.https.onRequest((req, res) => {
res.set('Access-Control-Allow-Origin', '*');
res.set('Access-Control-Allow-Methods', 'GET', 'POST');
res.set('Access-Control-Allow-Headers', 'Content-Type');
if (req.method === 'OPTIONS') {
res.end();
}
else {
if(req.body.course != null && req.body.date != null && req.body.hour != null && req.body.minute != null
&& req.body.timeofday != null && req.body.tohour != null && req.body.tominute != null && req.body.totimeofday != null
|| req.body.course != undefined && req.body.date != undefined && req.body.hour != undefined && req.body.minute != undefined && req.body.timeofday != undefined
&& req.body.tohour != undefined && req.body.tominute != undefined && req.body.totimeofday != undefined)
{
let docId = Math.floor(Math.random() * (99999 - 00000));
let newTimes = {
"course": req.body.course,
"tohour": req.body.tohour,
"tominute": req.body.tominute,
"totimeofday": req.body.totimeofday,
"date": req.body.date,
"hour": req.body.hour,
"minute": req.body.minute,
"timeofday": req.body.timeofday,
}
classtimesCollection.add(newTimes).then(snapshot => {
res.send(200, {
"message":"Time has been added"
})
});
}
else {
res,send(400, {
"message": "All fields are required"
})
}
}
});我能够从一个集合中获得数据，如下所示：
exports.getClassesSchedule = functions.https.onRequest((req, res) => {
res.set('Access-Control-Allow-Origin', '*');
res.set('Access-Control-Allow-Methods', 'GET', 'POST');
res.set('Access-Control-Allow-Headers', 'Content-Type');
if (req.method === 'OPTIONS') {
res.end();
}
else
{
let allClasses = [];
usersClasses.get()
.then(snapshot => {
snapshot.forEach(doc => {
allClasses.push(doc.data());
});
res.send(allClasses);
})
.catch(err => {
console.log("Error getting documents", err);
});
}
});回答 1
Stack Overflow用户
发布于 2019-09-20 08:32:14
我想你已经很接近了，你只需要打另一个电话。在开始整理数据之前，您需要使用Promise.all来等待这两个承诺都被保证完成。
exports.getClassesSchedule = functions.https.onRequest((req, res) => {
res.set('Access-Control-Allow-Origin', '*');
res.set('Access-Control-Allow-Methods', 'GET', 'POST');
res.set('Access-Control-Allow-Headers', 'Content-Type');
if (req.method === 'OPTIONS') {
res.end();
}
else
{
let classTimes = []
let promise1 = classTimesRef.get()
.then(snapshot => {
snapshot.forEach(doc => {
classTimes.push(doc.data());
});
return classTimes
})
.catch(err => {
console.log("Error getting documents", err);
});
let allClasses = [];
let promise2 = usersClassesRef.get()
.then(snapshot => {
snapshot.forEach(doc => {
allClasses.push(doc.data());
});
return allClasses
})
.catch(err => {
console.log("Error getting documents", err);
});
return Promise.all([promise1, promise2]).then(data => {
let times = data[0]
let classes = data[1]
// Collate the data here
return res.send()
}
}
});页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：
https://stackoverflow.com/questions/58009753
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