Hi, Brian. Took a look at your series of videos about setting notifications with FCM. Thank you very much for this material, it is super usefull... I received a lot of new information. I guess you can finish up this course with the last video, how to handle notification tap in different device states. Thanks again.

Thanks Brain, I just finished the updated videos. When are you planing to release the new videos for pagination using firebase could functions?

Hi Brain, great video but you didn't show how to go to the user who did the following (how to go to his profile). In the pre-video of push notification you showed this logic, but it's not in the tutorials. Are you going to do it as well? Thanks!

Hi brain, I just implemented cloud trigger in my project to send push notifications. It works for me.. but I still see an error for not sending back a promise or something. here's my code for (var playerUid in players) { admin.database().ref('/users/' + playerUid ).once('value', snapshot => { var data = snapshot.val(); var userFCM = data["fcm"]; console.log("userFCM: ", userFCM); var payload = { notification: { title: title, body: body }, data: { groupId: groupId } }; admin.messaging().sendToDevice(userFCM, payload) .then(response => { console.log("Successfully sent message:", response); }).catch(function(error) { console.log("Error sending message:", error); }); }) } I have checked an answer for similar problem here https://stackoverflow.com/questions/47743082/waiting-for-a-foreach-to-finish-before-return-from-my-promise-function but still I couldn't implement it, can you please help me? I am stuck here for long time

Hi, Brian Thanks for great courses. I was trying to get sound when I receive push notification from firebase as well and I found that I just need to add one more information in payload like below to play default 'ding' sound when user receives push notification in index.js file's cloud function. var payload = { notification: { title: notificationTitle, body: notificationMessage, sound: 'default' } }; Hope this helps someone else who is trying to play sound. :) Thanks!

Hi Brian, I am facing a problem when I am trying to fetch token from Firebase. Here is a link to my question in StackOverFlow: https://stackoverflow.com/questions/48056087/cloud-functions-error-firebase

Hey Brian, I know this is a lot to ask but, can you please send me the index.js code modified so it works for the Firebase Messaging app. I have tried soooooo much but something isn't working... thanks SOOOOO much if you can get back to me.

Hi Brian! I like your videos, I've almost learnt everything from them! And I also appreciate you explain everything step by step. I would like to ask a question: how can I send a message to all of the users, when for e.g. there is something new in the application? Thanks

when I execute the observeFollowing function (08:56) I get this error TypeError: Cannot read property 'uid' of undefined at exports.observeFollowing.functions.database.ref.onCreate.event (/user_code/index.js:14:25) at Object.<anonymous> (/user_code/node_modules/firebase-functions/lib/cloud-functions.js:112:27) at next (native) at /user_code/node_modules/firebase-functions/lib/cloud-functions.js:28:71 at __awaiter (/user_code/node_modules/firebase-functions/lib/cloud-functions.js:24:12) at cloudFunction (/user_code/node_modules/firebase-functions/lib/cloud-functions.js:82:36) at /var/tmp/worker/worker.js:700:26 at process._tickDomainCallback (internal/process/next_tick.js:135:7) so I comment those lines out and just print out "event" in the logs: I get the followin app: FirebaseApp { firebaseInternals_: FirebaseNamespaceInternals { firebase_: [Object], serviceFactories: {}, apps_: [Object], appHooks_: {} }, services_: {}, isDeleted_: false, name_: '__admin__', options_: { projectId: 'instagramfirebase-!@#$%', databaseURL: 'https://instagramfirebase-!@#$%.firebaseio.com', storageBucket: 'instagramfirebase-!@#$%.appspot.com', credential: [Object] }, INTERNAL: FirebaseAppInternals { credential_: [Object], isDeleted_: false, tokenListeners_: [] } }, instance: 'https://instagramfirebase-!@#$%.firebaseio.com', _path: '/following/8KCjOPXBsdM9LikaAcGQHKV4dDF3/NkMaql9RAhM4titj5hPJl68Q5zb2', _data: 1 } the _path variable has the correct info both uid and following followingId i dont know why the wild card variables arent working

For those of you who can't seem to retrieve the firebase log result of for example, 'User: sxca9123913 following n1o23102', I'd suggest inside the observeFollowing function rewrite the code to return event.data.ref.root.child('User: ' + uid + ' is following: ' + followingId); . This will definitely work as its retrieving inside the database to get that information instead of returning uid of undefined.

Help, I am getting the message successfully but not the notification. Any reason why that is? exports.observeFollowing = functions.database.ref('/following/{uid}/{followingId}').onCreate((data, context) => { var uid = context.params.uid; var followingId = context.params.followingId; // lets log out some messages // return event.data.ref.root.child('User: ' + uid + ' is following: ' + followingId)) console.log('User: ' + uid + ' is following: ' + followingId); admin.database().ref('/users/' + followingId).once('value', snapshot => { var userWeAreFollowing = snapshot.val(); var message = { notification: { title: "following", body: "following" }, token: userWeAreFollowing.fcmToken }; return admin.messaging().send(message) .then((response) => { console.log('Successfully sent message:', response); return response }) .catch((error) => { console.log('Error sending message:', error); }); }) })

This wasn't working when I did it. Now it just randomly worked.. without fixing anything,.. howw

has anyone been able to figure out how to block users with our database structure? i feel that re-writing the security is the way to go, but I'm not too sure. Any help would be hugeeeee

Hi guys, Firebase has change different things with the last migration to the new beta so if anyone need the new code this, at least for me, works. Before paste the code run these three line on the terminal: npm install firebase-functions@latest --save npm install firebase-admin@5.11.0 --save npm install -g firebase-tools now you can paste the code: exports.observeFollowing = functions.database.ref('/following/{uid}/{followingId}') .onCreate((snapshot, context) => { const original = snapshot.val(); var uid = context.params.uid var followingId = context.params.followingId console.log('User: ', uid, 'is following ', followingId); // lets log out some messages admin.database().ref('/users/' + followingId).once('value', snapshot => { var userWeAreFollowing = snapshot.val(); admin.database().ref('/users/' + uid).once('value', snapshot => { var userDoingTheFollowing = snapshot.val(); var payload = { notification: { title: "You have a new follower", body: userDoingTheFollowing.username + ' is now following you', sound: 'default' }, data: { followerId: uid } } admin.messaging().sendToDevice(userWeAreFollowing.fcmToken, payload) .then((response) => { console.log('Successfully sent message:', response); return response }) .catch((error) => { console.log('Error sending message:', error); }); }) }) });

Hi brian, I love your videos they are very awesome, i was wondering if i wanted to send a notifications for likes to users. I notices that the likes node for our firebase does not have the user that posted to picture. It only has the postId and the user that like the photo. Is there a way i can access who posted the picture inside of a "observeLikes" function or would i have to restructure the like function from inside the app to include the user somehow? Thank you and have a bless day.

Hey Brian, I hope you are having a good December, and just had a quick question. I actually was able to figure out how to trigger a function when a user likes the post. Which i am actually proud of myself for doing, but when it comes to tapping the notification to go to the post i am kind of lost. I used this to get the post id, however i don't know how to get a snapshot.val() like you did the /users/ to get the uid of the person. Would i do this to get the specific postId return admin.database().ref('/posts/following' + postId).once('value', snapshot =>{ }) Or would i use something else to find the specific post?

Hi guys, I'm stuck here and am sure you guys can help me. I'm kind of new to working with firebase and have a chat app that's not getting messages while the app is not running. My firebase tree is more like below: /messages fromId: "*****" messageUID: "****" seen: false status: "Delivered" text: "****" timestamp: *** toId: **** and I also have the following: /user-messages: user-messages 17w*****nOTzXXfSJ*****121 (this should be current user uid) -LRm*****kPquM0vYfh (recipient or chat partener uid) metaData badge: 0 isGroupChat: false lastMessageID: "****" userMessages -LRmb******AIlEZ97q: 1 So I just wanna know which path I should use between the 2, /messages or user-messages and what do I fetch from whichever path that's the best? I kind of tried several ways but am not getting the best way to approach this. exports.observeMessages = functions.database.ref('/????/{????}/{???}') .onCreate(event => { var *** var*** console.log( ); })

Hey Brian, I'm really enjoying the course quick question, if i wanted to the caption of the post and put it in the push notification for comments. How would i get the caption like you got the username of the user? I tried using this return admin.database().ref('/posts/{followingId}/' + postId).once('value', snapshot =>{ var postWeAreCommenting = snapshot.val(); For comments put it says that the caption is null, do you know a good way that i can fetch that post information to retrieve the caption?

Fcmtoken is based on the device? so what if the user signs into another phone? I was thinking we can update the fcmtoken every time we log in but if we do that then only one of the two phones we are logged in will get the notification! also if we log into a phone that was previously logged in by another user in the app, then both user will get each others notification! how do i solve this problemm?

Hey Brian, Quick question is there a way i can send a firebase cloud message to multiple users device, think of it in a group chat tap of way? Would there be any documentation to refer to. Thank you in advance.

I followed AndreaMich's code and the observeFollowing cloud function works. However, there is no sound on the receiver's end when receiving the notification. When I did the manual cloud messaging. The sound works fine, but it doesn't work in cloud function.

Hi Brian do you have any idea how to pull autoID generated by childbyAutoId() , example when I have list of items because Firebase does not update same value fcm does not work when same value overwritten is

One of the best videos from Brian

This is so helpful!

Is there a way to add user photo into the payload just like sound?