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Vue 3 Firebase Auth get *any* user data by id? [duplicate]

This question already has an answer here:
How to get FirebaseUser from a uid?
(1 answer)
Closed 8 months ago.
New to vue/firebase. I was able to lookup how to pull up “current user” data from auth no problem but trying to write a js composable that I can pass in any user id (not necessarily current user) and it will return the user object or at least displayName.
All the docs/vids I can find on the topic reference getting info on *current user *only not another user. From the Google Docs it says I should be able to do this in the "Retrieve user data" section. Closest model to Vue code-wise seems to be “Node.Js” but it isn't working.
Here's what I've got in getUserById
import { getAuth } from 'firebase/auth'
const getUserById = (u) => { // u = user id
const userData = null
getAuth()
.getUser(u)
.then((userRecord) => {
// See the UserRecord reference doc for the contents of userRecord.
console.log(`Successfully fetched user data: ${userRecord.toJSON()}`);
userData = userRecord
})
.catch((error) => {
console.log('Error fetching user data:', error);
});
return { userData }
}
export default getUserById
The error I get is getUser is not a function. I tried adding getUser to the import but same error.

There is no way to look up information about just any user by their UID in the client-side APIs of Firebase as that would be a security risk. There is an API to look up a user by their UID in the Admin SDK, but that can only be used on a trusted environment (such as your development machine, a server you control, or Cloud Functions/Cloud Run), and not in client-side code.
If you need such functionality in your app, you can either wrap the functionality from the Admin SDK in a custom endpoint that you then secure, or have each user write information to a cloud database (such as Realtime Database or Firestore) and read it from there.
Also see:
How to get FirebaseUser from a uid?
Firebase get user by ID
Is there any way to get Firebase Auth User UID?

FirebaseError: [code=invalid-argument]: Function setDoc() called with invalid data

I am using Firebase SDK's within Node-red (as specified in NPM docs they can be used for IoT devices with NODE.js).
I can use all of the CRUD methods with Firebase RealtimeDatabase.
With Firebase Firestore I can only use READ and DELETE functionality.
SET and UPDATE results in weird errors that I couldn't find answers
anywhere on the internet.
I am importing Firebase SDK's through require() inside settiings.js and functionGlobalContext so I can access them in Node-red functions:
functionGlobalContext: {
firebase: require('firebase/app'),
firebaseDatabase: require('firebase/database'),
firebaseFirestore: require('firebase/firestore'),
// os:require('os'),
// jfive:require("johnny-five"),
// j5board:require("johnny-five").Board({repl:false})
},
First I initialize my whole Firebase project with this code (and everything initializes fine without errors):
//Load data from Global contexta
const firebase = global.get('firebase');
const firebaseDatabase = global.get('firebaseDatabase');
const firebaseFirestore = global.get('firebaseFirestore');
const firebaseConfig = {
//my Firebase credentials
};
//Set up Firebase
const app = firebase.initializeApp(firebaseConfig);
const database = firebaseDatabase.getDatabase();
const firestore = firebaseFirestore.getFirestore();
//Save the database reference to Global context
global.set('app', app);
global.set('database', database);
global.set('firestore', firestore);
And here I am trying basic SET operation with Firestore:
const ft = global.get('firebaseFirestore');
const firestore = global.get('firestore');
const frankDocRef = ft.doc(firestore, "users", "frank");
await ft.setDoc(frankDocRef, {
name: "Frank",
age: 12
});
Unfortunately even though this code is ctrl+c ctrl+v from Firestore docs I get this error:
"FirebaseError: [code=invalid-argument]: Function setDoc() called with invalid data. Data must be an object, but it was: a custom Object object (found in document users/frank)"
When I use the same code inside a web app everything works fine.
There has to be something going on under the hood with Node-red
I tried creating the object using various methods and all of them resulted in the same error.
Does anybody have any idea what could be going wrong here?

Firebase function not being triggered when data base is written to

My database is structured as follows Collection("Message").Document("message")
But in reality, I want any change in the database's main collection to be monitored—when a document is added. I added the message document because I thought that maybe the function wasn't being called since my documents are the auto-generated ones. However, the problem persists...
Just for background I am an iOS developer, so perhaps I am doing something wrong here:
const functions = require('firebase-functions');
const admin = require('firebase-admin');
admin.initializeApp();
exports.sendPushNotifications = functions.database.ref('/Messages/{message}').onCreate((snapshot,context) => {
console.log(snapshot);
console.log(context);
var topic = "/topics/sentMessages";
var payload = {
data: {
message : 'You recieved a new message!'
}
}
return admin.messaging().sendToTopic(topic,payload).then((response) => {
return response;
})
})
For additional background: The application receives push notifications fine when using the console whether it be directly to the testing device or using topics. This problem is strictly when writing to firebase Firestore...

When you said "Collection("Message").Document("message")" that suggested to me that you're using Firestore as your database. However, your function is targeting changes to Realtime Database, which is a completely different thing. functions.database builds function for Realtime Database. functions.firestore builds functions for Firestore. You will want to read the documentation on Firetore triggers to learn how to write them.

How to update or set property of firestore document after .onCreate cloud function trigger

I'm currently trying to integrate Stripe with my Firebase's Cloud Firestore db through using Cloud Functions for Firebase. The onCreate trigger is happening correctly but I also want it to update or set a specific field called "customer_id" into the right document in my Users collection. I think something is a little off about how I write my function since I'm not the most experienced with javascript.
I've also tried
return admin.firestore().ref(`Users/${user.uid}/customer_id`).set(customer.id);
'use strict';
const functions = require('firebase-functions');
const admin = require('firebase-admin');
admin.initializeApp();
//const logging = require('#google-cloud/logging')();
const stripe = require('stripe')(functions.config().stripe.token);
const currency = functions.config().stripe.currency || 'USD';
// When a user is created, register them with Stripe
exports.createStripeCustomer = functions.auth.user().onCreate((user) => {
return stripe.customers.create({
email: user.email,
}).then((customer) => {
return admin.firestore().collection("Users").doc(user.uid).update({"customer_id": customer.id})
});
});
Customer gets created with Stripe no problem but the "customter_id" field is not getting updated on the Firestore db.
Print screen of the database:
Print screen of the error log:

As said in the comments, from the print screen of the error log, the code you have deployed does not correspond to the code you are referencing to in your question.
The code in your question looks correct.

Getting id of the current user from Cloud Functions and Firebase

I am using google cloud functions to register push notifications through firebase. In my app, i have a notifications reference that changes for a current user whenever they get a new follower or like, etc. As of right now I am able to send the notification to the phone whenever that whole reference child changes
For example, if any single post is liked, then it will send a notification. What I need to do is observe the current user to only send the notification that single person.
Here is my JavaScript file
const functions = require('firebase-functions');
const admin = require('firebase-admin');
admin.initializeApp(functions.config().firebase);
exports.sendPushNotification = functions.database.ref('/notification/{id}').onWrite(event => {
const payload = {
notification: {
title: 'New message arrived',
body: 'come check it',
badge: '1',
sound: 'default',
}
};
return admin.database().ref('fcmToken').once('value').then(allToken => {
if (allToken.val()) {
const token = Object.keys(allToken.val());
return admin.messaging().sendToDevice(token, payload).then(response => {
});
}
});
});
I would like to replace this line:
functions.database.ref('/notification/{id}').onWrite(event => {
With this:
functions.database.ref('/notification/{id}').(The current user ID).onWrite(event => {
How do I get the current users id?

You seem very new to JavaScript (calling it JSON is sort-of a give-away for that). Cloud Functions for Firebase is not the best way to learn JavaScript. I recommend first reading the Firebase documentation for Web developers and/or taking the Firebase codelab for Web developer. They cover many basic JavaScript, Web and Firebase interactions. After those you'll be much better equipped to write code for Cloud Functions too.
Now back to your question: there is no concept of a "current user" in Cloud Functions. Your JavaScript code runs on a server, and all users can trigger the code by writing to the database.
You can figure out what user triggered the function, but that too isn't what you want here. The user who triggered the notification is not the one who needs to receive the message. What you want instead is to read the user who is the target of the notification.
One way to do this is to read it from the database path that triggered the function. If you keep the notifications per user in the database like this:
user_notifications
$uid
notification1: ...
notification2: ...
You can trigger the Cloud Function like this:
exports.sendPushNotification = functions.database.ref('/user_notification/{uid}/{id}').onWrite(event => {
And then in the code of that function, get the UID of the user with:
var uid = event.params.uid;

For Swift 3.0 - 4.0
You can do this:
import Firebase
import FirebaseAuth
class YourClass {
let user = Auth.auth().currentUser
let userID = user.uid
// user userID anywhere
}