delete constant

FieldValue const delete

Returns a sentinel for use with update() to mark a field for deletion.

final documentRef = firestore.doc('col/doc');
final data = { a: 'b', c: 'd' };

documentRef.set(data).then(() {
  return documentRef.update({a: Firestore.FieldValue.delete()});
}).then(() {
  // Document now only contains { c: 'd' }
});

Implementation

static const FieldValue delete = _DeleteTransform.deleteSentinel;