How can I retrieve only the pertinent information stored in Firestore?

I'm struggling to filter out only the data relevant to a specific "userId" from Firestore, as currently everything in the database is being printed. I've attempted to make changes based on advice I received but it hasn't resulted in any improvements. I'd greatly appreciate your guidance in fixing this issue.

The TypeScript code for the app component is as follows:

constructor(...) {
  this.userId = authService.currentUserId; // for loading user id data 
  this.userCollection = afs.collection<User>('users/'+this.userId);
  this.user$ = this.userCollection.snapshotChanges().pipe(
      map(actions => {
      return actions.map(a => {
          const data = a.payload.doc.data() as User;
          const id = a.payload.doc.id;
          if (id == this.userId) {
              return { id, ...data };
          }
      });
      })
  );
} 

<ion-item *ngFor="let data of user$ | async">
<ion-label>
{{data.myName}}
<p>{{data.userId}}</p>
</ion-label>
</ion-item>

Answer №1

Give this a shot.

    Here's a suggestion for you: Afs.doc<User>('users/' + this.userId).snapshotChanges().pipe(
      map(change => {
        const info = change.payload.doc.data() as User;
        const identifier = change.payload.doc.id;
        return { identifier, ...info };
      })
    );

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