I have integrated Firebase's Facebook and Email Login into my iOS application.
Although, I would like to only store the Firebase User ID in my API database.
Therefore from my backend server (say Ruby) how can I query firebase to get say the user's name and user's email address given that I have their Firebase User UID.
Thanks
To directly read user data for arbitrary users of your app, you'd use the Firebase Admin SDK: https://firebase.google.com/docs/admin/setup. This specific page shows how to read user data: https://firebase.google.com/docs/auth/admin/manage-users#retrieve_user_data
Reading user data through the Admin SDK is currently only available for Node.js and Java. Since Ruby isn't on this list, you'll need to keep the user information elsewhere. The Firebase Database is a common place to store such data, so that any platform can access it through its REST API.
Related
I have been trying to find an answer for a while now. I am creating a react native App, and want to send personalized notifications to a user. I only want to ask the user for their name and number, and don't want to make them create an account. Is there a way i can save this info in firestore?
Right now for firestore the only way I see to save user data is to first make them sign in.
auth.createUserWithEmailAndPassword(email, password)
I just want to be able to get a users name and save it in a database, to then be able to send notifications like "Good Job John Doe". My app has no need for an email and password auth.
You can use anonymous authentication to create temporary anonymous accounts. This can be linked to a user if they decide to sign up to your app.
You can use firebase firestore to store user information without using authentication.
Just simply ask the user about their name and number, save it in the firestore. Then using Firebase Cloud Messaging subscribe to a topic which will be unique to the user (name+number or something like that). Then using firebase cloud function or manually you can send notifications to each individual user
in the app, which logs the user in only through phone authentication.
now the question is can I get the user id from his phone number(not the user id of the current user though).
I have the access to other users phone number in the app, and I want to get their id for further use.
is it possible in flutter with firebase at the backend?
Looking up the UID for a user based on either phone number or email address is considered a sensitive operation. For this reason such operations are only available in the Admin SDKs, which are designed to be used in trusted environments, such as your development machine, a server you control, or Cloud Functions. For more on these, see the bottom two code samples in looking up user data in the documentation.
If you want to perform such operations from your client-side code, your two main options are:
Store the required mapping in a cloud-hosted database, such Firebase's Realtime Database or Firestore, as Huthaifa also answered.
Create your own custom API on a server or Cloud Functions where you lookup the user through the Admin SDK. Your client-side application code can then call this custom API.
In both of these cases you are in full control of what data you share, and how you secure access.
Sure you can, there are multiple approaches for this, if you post your structure for the user model, or how you are storing them in firebase.
You can run a simple Firebase query like this example:
FirebaseFirestore.instance.collection('users').where('phoneNumber', isEqualTo: thePhonenumberOftheuserYouwant2GetUIDfor).get()
You can also store the available\accessible contacts for every user in their user document, and when your user logs in, it'll fetch all their allowed user numbers.
The more information you provide to your problem, the more StackOverflow can provide you back.
I want to get User Data from firebase, I need the diplayName of a User. is there any way to get the displayName of a other user with his uid?
There is no way to look up information about another user in Firebase Authentication by using the client-side SDKs of Firebase, as that would be a security risk.
There are two common ways to allow searching the users in a secure way:
Write information about each user to a database (such as Cloud Firestore or the Realtime Database) when they register, and then search the database when needed. That way your code controls what data gets written and thus is searchable.
Firebase has Admin SDKs that run in trusted environments, such as your development machine, a server you control, or Cloud Functions. These SDKs have options to list users, which means you can search them. If you wrap one of the Admin SDKs in a custom API that you build and secure yourself, you can then call that from your Flutter code.
Also see:
React native firebase authentication searching
You can't get the name, or any other details of a user that is not currently signed in using FirebaseAuth.
Instead, you must create a node in your database where you store the name, and any other necessary details by querying the database.
I have a Firebase project, which I'm currently using with android. I need to programmatically fetch details of the users authorized along with the UID, Email, etc. Exactly the way it is shown in firebase (with the search), this web portal will be given to the vendor or the person using it to verify the user's authenticity.
I've attached the screenshot from Firebase, I'm hoping to replicate it the same way with the search. If this is possible, how do I go about doing this?
It's not possible to list users from an Android app, using only the Firebase Authentication SDK. You can list users using the Firebase Admin SDK, but that can only be run on a backend you control, using service account credentials for your project.
It might be easier if you store user info in a database, to be queried by client code, rather than try to have your app try to access auth data directly.
Is there a way to access the "Authentication" database in Firebase?
I'm building an app which uses the Firebase anonymous authentication
I would like to access the Firebase "Authentication" database to check the last login of the user.
Tried looking through the web but didn't find any reference.
Can someone point me to the right direction please?
There is no API for you to access the timestamp of when a specific user last logged in. Most developers end up storing this type of information in their Firebase Database, for example with the structure outlined in the section structuring your database.
Firebase launched the admin node.js sdk. You can look users by uid or email and get their metadata like creation date and last login date.
https://firebase.google.com/docs/auth/admin/manage-users