Get multiple documents from a collection. Get all documents in a ... if (doc.exists) { ... 'default'. See https://firebase.google.com/docs/reference/js/firebase.firestore.
firebase-check-if-document-exists
But in Firebase Firestore there is a separate method that is used to read data from ... I want to query all documents that relate to a user, by checking if their UID is .... You can use the exists property to explicitly verify a document's existence. ... Property of the DocumentSnapshot that signals whether or not the data exists.. // Get the `FieldValue` object let FieldValue = require('firebase-admin').firestore.​FieldValue; // Create a document reference let cityRef = db.collection('cities').doc('​ ... 939c2ea5af
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