How to create/update multiple documents at once in Firestore

Question

Is it possible to store multiple documents in Firestore with only one request? With this loop it\'s possible but this would cause one save operation per item in the list.

Answer 1

Update some properties on all documents in a collection:

resetScore(): Promise {
  return this.usersCollectionRef.ref.get().then(resp => {
    console.log(resp.docs)
    let batch = this.afs.firestore.batch();

    resp.docs.forEach(userDocRef => {
      batch.update(userDocRef.ref, {'score': 0, 'leadsWithSalesWin': 0, 'leadsReported': 0});
    })
    batch.commit().catch(err => console.error(err));
  }).catch(error => console.error(error))
}