Create users server-side Firebase Functions

Question

I am trying to create a login GET request to the server side using the Firebase cloud functions.

Is it possible to auth using firebase functions? I tried npm i firebase inside the functions folder, but it fails to work.

Is there an option to create users using server-side code?

I don't understand what you're trying to do. Can you show some code for illustration? — Doug Stevenson
– Doug Stevenson, Commented Nov 13, 2017 at 16:05

Frank van Puffelen · Accepted Answer · 2017-11-13 17:27:59Z

16

To create Firebase Authentication users from within Cloud Functions you use the Firebase Admin SDK for Node.js.

To install it, follow the instructions in the documentation. Mostly it's:

$ npm install firebase-admin --save

And then import it into your index.js using:

var admin = require("firebase-admin");

To create a user follow the instructions in this documentation:

admin.auth().createUser({
  email: "[email protected]",
  emailVerified: false,
  phoneNumber: "+11234567890",
  password: "secretPassword",
  displayName: "John Doe",
  photoURL: "http://www.example.com/12345678/photo.png",
  disabled: false
})
  .then(function(userRecord) {
    // See the UserRecord reference doc for the contents of userRecord.
    console.log("Successfully created new user:", userRecord.uid);
  })
  .catch(function(error) {
    console.log("Error creating new user:", error);
  });

answered Nov 13, 2017 at 17:27

Frank van Puffelen

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5 Comments

ProgramKiddo Over a year ago

Can I use this for login too?

Frank van Puffelen Over a year ago

Cloud Functions normally access Firebase through the Admin SDK, so they don't need to authenticate.

ProgramKiddo Over a year ago

Sure, but in my case, I want to create a login while using a backend system. so the user can only enter an email and password, everything else should be handled server side. I don't see an option to do that here, unfortunately.

ForrestLyman Over a year ago

@J.Doe you can create your own auth provider, and inject whatever logic you like including hitting your cloud functions...firebase.google.com/docs/auth/web/custom-auth

Jawad Over a year ago

Don't you have to return the promise? In three places. Line 1, end of then and end of catch.

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