更新 Firestore 文档字段

更新 Firestore 文档字段

包含此代码示例的文档页面

如需查看上下文中使用的代码示例,请参阅以下文档:

代码示例

Go

_, err = client.Collection("cities").Doc("DC").Update(ctx, []firestore.Update{
	{
		Path:  "capital",
		Value: true,
	},
})
if err != nil {
	// Handle any errors in an appropriate way, such as returning them.
	log.Printf("An error has occurred: %s", err)
}

Java

// Update an existing document
DocumentReference docRef = db.collection("cities").document("DC");

// (async) Update one field
ApiFuture<WriteResult> future = docRef.update("capital", true);

// ...
WriteResult result = future.get();
System.out.println("Write result: " + result);

Node.js

const cityRef = db.collection('cities').doc('DC');

// Set the 'capital' field of the city
const res = await cityRef.update({capital: true});

PHP

$cityRef = $db->collection('samples/php/cities')->document('DC');
$cityRef->update([
    ['path' => 'capital', 'value' => true]
]);

Python

city_ref = db.collection(u'cities').document(u'DC')

# Set the capital field
city_ref.update({u'capital': True})

Ruby

city_ref = firestore.doc "#{collection_path}/DC"
city_ref.update({ capital: true })

后续步骤

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