Create a Firestore document reference

Create a Firestore document reference

Explore further

For detailed documentation that includes this code sample, see the following:

• Cloud Firestore Data model
• Data model

Code sample

C#

To authenticate to Firestore, set up Application Default Credentials. For more information, see Set up authentication for a local development environment.

DocumentReference documentRef = db.Collection("users").Document("alovelace");

Go

To authenticate to Firestore, set up Application Default Credentials. For more information, see Set up authentication for a local development environment.

import (
	"cloud.google.com/go/firestore"
)

func createDocReference(client *firestore.Client) {

	alovelaceRef := client.Collection("users").Doc("alovelace")

	_ = alovelaceRef
}

Java

To authenticate to Firestore, set up Application Default Credentials. For more information, see Set up authentication for a local development environment.

// Reference to a document with id "alovelace" in the collection "users"
DocumentReference document = db.collection("users").document("alovelace");

Node.js

To authenticate to Firestore, set up Application Default Credentials. For more information, see Set up authentication for a local development environment.

const alovelaceDocumentRef = db.collection('users').doc('alovelace');

PHP

To authenticate to Firestore, set up Application Default Credentials. For more information, see Set up authentication for a local development environment.

$document = $db->collection('samples/php/users')->document('alovelace');

Python

To authenticate to Firestore, set up Application Default Credentials. For more information, see Set up authentication for a local development environment.

a_lovelace_ref = db.collection("users").document("alovelace")

Ruby

To authenticate to Firestore, set up Application Default Credentials. For more information, see Set up authentication for a local development environment.

document_ref = firestore.col("users").doc("alovelace")

What's next

To search and filter code samples for other Google Cloud products, see the Google Cloud sample browser.