how to get a list of product from a specefic user in firebase

[takijemai]

i 'm using ionic+firebase to get a list of product for a specific user in firebase , but i can't get it this list?
i have 2 users every user have a list of product , the problem is how i can get this list without the login of his user
i m new with ionic and firebase
thanks

[rusudinu]

You could do something like this:

import { AngularFirestore } from '@angular/fire/firestore';
import { Observable } from 'rxjs';

// Replace `userId` with the actual user ID you want to retrieve the list of products for
const userId = 'user123';

export class ProductService {
  constructor(private firestore: AngularFirestore) {}

  getProductsForUser(): Observable<any> {
    return this.firestore
      .collection('users')
      .doc(userId)
      .collection('products')
      .valueChanges();
  }
}

I assumed you have a "users" collection in Cloud Firestore with documents for each user, and a "products" subcollection under each user's document with the list of their products.