Firebase Auth signIn distinction

Question

On my website, I have two portals for login. Portal A is login for learners. Portal B is login for teachers.

Both learners\' and teachers\' accounts are located in the

Answer 1

Firebase Authentication has no built-in way to distinguish between these two types of users. It simply authenticates the credentials that a user enters, and ensure that they're correct. If certain users can only access a certain application or certain data, this is information that will have to come from you.

The above is important to realize, so I'll repeat it: Firebase Authentication allows all users to authenticate as long as they provide the right credentials. It has no way to block access to authentication based on application-specific information, such as your user-type. This type of authorization logic is part of your application, both in code and (if you use a Firebase Database) of your server-side security rules.

A common way to implement your scenario is to add the information about the types of users to a database (such as Firebase's Realtime Database, or Cloud Firestore). In this data you could for example store the email addresses of all teachers.

Now with this information, your code can then determine whether the person who signed in to the site is a teacher or not. If they're a teacher signing in to the student web site, you can redirect them, and vice versa.