A QueryDocumentSnapshot contains data read from a document in your Firestore database as part of a query. The document is guaranteed to exist and its data can be extracted with .data() or .get(<field>) to get a specific field.
A QueryDocumentSnapshot offers the same API surface as a DocumentSnapshot. Since query results contain only existing documents, the exists property will always be true and data() will never return 'undefined'.
Signature:
exportdeclareclassQueryDocumentSnapshot<AppModelType=DocumentData,DbModelTypeextendsDocumentData=DocumentData>extendsDocumentSnapshot<AppModelType,DbModelType>Extends:DocumentSnapshot<AppModelType, DbModelType>
Methods
| Method | Modifiers | Description |
|---|---|---|
| data(options) | Retrieves all fields in the document as an Object.By default, serverTimestamp() values that have not yet been set to their final value will be returned as null. You can override this by passing an options object. |
QueryDocumentSnapshot.data()
Retrieves all fields in the document as an Object.
By default, serverTimestamp() values that have not yet been set to their final value will be returned as null. You can override this by passing an options object.
Signature:
/** @override */data(options?:SnapshotOptions):AppModelType;Parameters
| Parameter | Type | Description |
|---|---|---|
| options | SnapshotOptions | An options object to configure how data is retrieved from the snapshot (for example the desired behavior for server timestamps that have not yet been set to their final value). |
Returns:
AppModelType
An Object containing all fields in the document.
