Облачная функция Firebase для возврата данных из 2 коллекций

Question

Я написал эти 2 облачные функции для публикации данных в облачном хранилище, и они работают нормально.Теперь мне нужно написать облачную функцию, которая должна получать данные обеих коллекций, которые были созданы выше, для публикации данных.Данные должны находиться внутри нового объекта и объединяться вместе

Требуемый вывод JSON:

[
    {
        "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"
    }
]

// Планирование класса

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"
            })
        }
    }
});

// Добавить время для классов

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"
      })
    }
  }
});

Я могу получить данные из одной коллекции, например:

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);
            });
    }
});

Answer 1

Я думаю, что вы близко, вам просто нужно сделать второй звонок.Вам нужно использовать Promise.all, чтобы дождаться гарантированного выполнения обоих обещаний, прежде чем начинать сбор данных.

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()
        }
    }
});