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CloudFunctions.getHttpsCallable parameters

By : ivanlivov
Date : October 18 2020, 06:10 AM
To fix the issue you can do Although I can't explain why it was designed this way, some people might find this post looking for help using the getHttpsCallable function. Here is an example calling a cloud function called addUser with two parameters, email and password. These parameters would normally be defined in another way such as via the text property of a TextController.
code :
                          functionName: "addUser",
                          <String, dynamic>{
                            "email": "test@test.com",
                            "password": "Terrific password!"

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Error submitting Cloudbuild job from Cloudfunctions if

By : Madiha Noreen
Date : March 29 2020, 07:55 AM
To fix the issue you can do The Cloud KMS API was not enabled on the project running Cloudbuild. It's unfortunate that the error message was so vague. In fact, I diagnosed the issue by running gcloud kms decrypt ... in a Cloudbuild job which helpfully told me that the API needed to be enabled.

how to retrieve data with the getHttpsCallable method

By : Pruthvi Raj
Date : March 29 2020, 07:55 AM
should help you out You can await the call method of httpsCallable.
The example app has the usage:
code :
                try {
                  final HttpsCallableResult result = await callable.call(
                    <String, dynamic>{
                      'message': 'hello world!',
                      'count': _responseCount,
                  setState(() {
                    _response = result.data['repeat_message'];
                    _responseCount = result.data['repeat_count'];
                } on CloudFunctionsException catch (e) {
                  print('caught firebase functions exception');
                } catch (e) {
                  print('caught generic exception');

CloudFunctions: Request is sending twice

By : Michael
Date : March 29 2020, 07:55 AM
I think the issue was by ths following , It is not very clear from your code why it would send the notification twice (since you check that userTo.data().userId !== sentBy). But what is sure is that you are not returning a Promise that resolves when all the asynchronous operations (get() and sendToDevice()) are completed.
I would suggest you watch the official Video Series (https://firebase.google.com/docs/functions/video-series/) which explain very well this point about returning Promises for background functions (in particular the ones titled "Learn JavaScript Promises").
code :
exports.sendRequestNotification = functions.firestore
    .onCreate((snap, context) => {

        const db = admin.firestore();

        const docReq = snap.data();

        const sentBy = docReq.sentBy;
        const sentTo = docReq.sentTo;

        // Get push token user to (receive)
        return db.collection('users')
            .where('userId', '==', sentTo)
            .then(querySnapshot => {

                //We know there is only one document (i.e. one user with this Id), so lets use the docs property
                //See https://firebase.google.com/docs/reference/js/firebase.firestore.QuerySnapshot.html#docs

                const userTo = querySnapshot.docs[0];

                if (userTo.data().pushToken && userTo.data().userId !== sentBy) {
                    // Get info user from (sent)
                    return db.collection('users')
                        .where('userId', '==', sentBy)

                } else {
                    console.log('User request or token not found')
                    throw new Error('User request or token not found');


            .then(querySnapshot => {

                const userFrom = querySnapshot.docs[0];

                const payload = {
                    notification: {
                        title: `${userFrom.data().nickname}`,
                        body: `requestNotify`,
                        badge: '1',
                        sound: 'default'

                return admin
                    .sendToDevice(userTo.data().pushToken, payload);
            .catch(error => {
                console.log('Error:', error);
                return false;


Update Sub-collections on CloudFunctions

By : user3351618
Date : March 29 2020, 07:55 AM
hop of those help? I finally figured out how to do this with nesting promises. Here is the solution:
code :
exports.updateFavoritedProducts = functions.firestore.document('products/{productId}').onUpdate((change, context) => {
    const data = change.after.data();
    const productID = data.id;

 return db.collection('products').where('id', '==', productID).get().then((productsQuerySnap) => {

    productsQuerySnap.forEach((productQuerySnap) => {
        const newPrice = productQuerySnap.data().price;
        const newPriceUnit = productQuerySnap.data().priceUnit;

        db.collection('users').get().then((usersQuerySnap) => {
            usersQuerySnap.forEach((userQuerySnap) => {

                return db.collection('users').doc(userQuerySnap.id).collection('favorites').doc(productQuerySnap.id).update({ 
                    price: newPrice,
                    priceUnit : newPriceUnit

                 }).catch((err) => {
                    console.log('Error getting documents', err);
                    return Promise.reject(err);
                return null
            .catch((err) => {
                console.log('Error getting documents', err);
                return Promise.reject(err);
        return null
    return null
    .catch((err) => {
        console.log('Error getting documents', err);
        return Promise.reject(err);

Change nested sub-collections on CloudFunctions

By : Nikita
Date : October 03 2020, 06:00 PM
seems to work fine It depends what do you exactly want to query.
If you want to query only ONE specific product document within the products sub-collection of ONE given store document you would do as follows:
code :
var docRef = db.collection("stores").doc(storeId).collection("products").doc(productId)

docRef.get().then(function(doc) {
    if (doc.exists) {
        console.log("Document data:", doc.data());
    } else {
        // doc.data() will be undefined in this case
        console.log("No such document!");
}).catch(function(error) {
    console.log("Error getting document:", error);
  .then(function(querySnapshot) {
  .catch(function(error) {
var productsCollGroup = db.collectionGroup('products');

.then(function (querySnapshot) {
.catch(function(error) {
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