Me gustaría consultar la colección de elementos filtrando solo los documentos que tienen una identificación determinada.
import { Firestore, collectionData, collection } from '@angular/fire/firestore'; import { Observable } from 'rxjs'; interface Item { name: string, ... }; @Component({ selector: 'app-root', template: ` <ul> <li *ngFor="let item of item$ | async"> {{ item.name }} </li> </ul> ` }) export class AppComponent { item$: Observable<Item[]>; constructor(firestore: Firestore) { const collection = collection(firestore, 'items'); this.item$ = collectionData(collection); } }Logro consultar siguiendo los siguientes pasos
// Import statement import { Firestore, collectionData, collection,where,query } from '@angular/fire/firestore'; // Please define an Observable like below Items: Observable<Item[]>; // Item being a model // inside your function const appRef = collection(this.firestore, 'items') const appQuery = query(appRef, where('uid', '==', userId)); this.Items= (await collectionData(appQuery)).pipe( map((actions) => { return actions.map((a) => { const data = a as Item; const uid = a.id; return { uid, ...data }; }); }) );