firebase - Query a single document from Firestore in Flutter (cloud_firestore Plugin)

Question

I want to retrieve data of only a single document via its ID. My approach with example data of:

TESTID1 {
     'name': 'example', 
     'data': 'sample data',
}

was something like this:

Firestore.instance.document('TESTID1').get() => then(function(document) {
    print(document('name'));
}

but that does not seem to be correct syntax.

I was not able to find any detailed documentation on querying firestore within flutter (dart) since the firebase documentation only addresses Native WEB, iOS, Android etc. but not Flutter. The documentation of cloud_firestore is also way too short. There is only one example that shows how to query multiple documents into a stream which is not what i want to do.

Related issue on missing documentation: https://github.com/flutter/flutter/issues/14324

It can't be that hard to get data from a single document.

UPDATE:

Firestore.instance.collection('COLLECTION').document('ID')
.get().then((DocumentSnapshot) =>
      print(DocumentSnapshot.data['key'].toString());
);

is not executed.

Answer 1

Waitting for answers