Question 74948 in Flutter Question posted in
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How to get the IDs of the all documents from the firebase using flutter web

I want to have a list contains the IDs of the documents in a collection enter image description herefor using the id as string in comparison with something else but I couldn’t find the way to do that

I wrote the following

final firebaseid = FirebaseFirestore.instance.collection('Guests').get().then((value) {
  var id = value;
  print(id);
});

but I couldn’t get the documents ids

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3

Answers


  1. 0

    Try this

    CollectionReference _collectionRef =
FirebaseFirestore.instance.collection('collection');

Future<void> getData() async {
    QuerySnapshot querySnapshot = await _collectionRef.get();

    final allData = querySnapshot.docs.map((doc) => doc.data()).toList();
}
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  2. 0

    While Murat’s answer will get you the data of all documents, you seem to be asking for the document IDs. In that case, you’ll want:

    FirebaseFirestore.instance.collection('Guests').get().then((querySnapshot) {
  for (var doc in querySnapshot.docs) {
    var id = doc.id;
    print(id);
  }
});

    The big difference here is that the code handles the fact that the result of calling get on a CollectionReference is a QuerySnapshot, and you’ll need to loop over its docs to get each individual document. This is also shown in the Firebase documentation on getting all documents in a collection.

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  3. 0

    You can get a list of all ids in a collection like this:

      void getAllGuestsIds() async {
    final docIds = await FirebaseFirestore.instance.collection('Guests').get().then(
          (value) => value.docs.map((e) => e.id).toList(),
        );
    //return or do something else with docIds
  }
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