AQueryDocumentSnapshot 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.

AQueryDocumentSnapshot offers the same API surface as aDocumentSnapshot. Since query results contain only existing documents, theexists property will always be true anddata() will never return 'undefined'.

Signature:

exportdeclareclassQueryDocumentSnapshot<AppModelType=DocumentData,DbModelTypeextendsDocumentData=DocumentData>extendsDocumentSnapshot<AppModelType,DbModelType>

Extends:DocumentSnapshot<AppModelType, DbModelType>

Methods

QueryDocumentSnapshot.data()

Retrieves all fields in the document as anObject.

Signature:

/** @override */data():AppModelType;

Returns:

AppModelType

AnObject containing all fields in the document.