Web Reference: Mar 14, 2017 · 12 functions.database.ref is not what you are looking for, that's the builder for listeners. You'll want to use event.data.ref or admin.database().ref 6 days ago · A guide to using transactions and batched writes in Cloud Firestore to perform atomic operations on your data. Retrieves multiple documents from Firestore. Holds a pessimistic lock on all returned documents. The first argument is required and must be of type DocumentReference followed by any additional DocumentReference documents.
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