How to get currently logged in auth state/user from angularfire2

Question

I have an ionic2 app and am using Firebase and angularFire2. I\'d like to get the current authentication state and current auth object/user from firebase using angularFire2.

Answer 1

1. Import: import { AngularFireAuth } from 'angularfire2/auth';
2. Inject: constructor(public afAuth: AngularFireAuth) { }

3. Check:

   this.afAuth.authState.subscribe(res => {
     if (res && res.uid) {
       console.log('user is logged in');
     } else {
       console.log('user not logged in');
     }
   });
   

Answer 2

You can simply import AngularFireAuth and do this:

this.angularFireAuth.authState.subscribe(userResponse => {
  if (userResponse) {
    console.log('here is your user data');
    localStorage.setItem('user', JSON.stringify(userResponse));
    console.log(userResponse);
  } else {
    localStorage.setItem('user', null);
  }
});

Here i am also using localStorage to save all data of my current user active on my app.

Answer 3

now in order to get the user info, you have to subscribe for getting the auth information. Ex

  constructor(public af: AngularFire) {
    this.af.auth.subscribe(auth => console.log(auth));// user info is inside auth object
  }

auth object will be null if auth state does not exist

Answer 4

current authentication state is available from the injected FirebaseAuth. You can get the actual auth data auth.getAuth()

See: https://github.com/angular/angularfire2/blob/master/src/providers/auth.ts#L99