Get data from observabale firestoredocument

Question

I have declared below variable

userDetails$: AngularFirestoreDocument<any>;

and below in service constructor

this.userDetails$ = this.firestore.collection('users').doc('key');

How can I get actual data from userdetails$?

Thanks

Answer 1

use valueChanges and subscribe to the observable.

 this.userDetails$.valueChanges().subscribe(value => {
    this.item= value 
  });;