The new version 9 of the Firebase JS SDK has arrived with a more modular approach, and I'm trying to wrap my head around it.
I want to find and read a document from Firestore by its ID. In version 8, you could do:
await db.collection('users').doc(id).get();
Version 9 seems to have a function called "doc", and one called "getDoc", that could sound like the new equivalent, but I don't understand how to use them in practice. Has someone else played around with these yet?
Thanks in advance!
The documentation has a complete code snippet explaining how to fetch a single document with given ID:
import { doc, getDoc } from "firebase/firestore";
const docRef = doc(db, "users", id);
const docSnap = await getDoc(docRef);
if (docSnap.exists()) {
console.log("Document data:", docSnap.data());
} else {
// doc.data() will be undefined in this case
console.log("No such document!");
}
The doc() method is used to get a DocumentReference and getDoc() is used to fetch the document from given reference.