Ready with firebase firestore

[yelaseck]

Hi, How can I Fetch data from my firebase firestore?

ListLoadingHandler<FakeItem>? get handler => DefaultListLoadingHandler( loadData: (skip, pageSize, cancelToken) async { /// Fetch your data }, controller: this, );

[mo-ah-dawood]

There are 2 ways

• the first one is when you need to paginate your data so you can just use get and every thing works fine

  @override
  ListLoadingHandler<FakeItem>? get handler => DefaultListLoadingHandler(
      loadData: (skip, pageSize, cancelToken) async {
        var cursor;
        if (skip > 0) {
          cursor = state.asLoaded()?.items.last.id;
        }
        Future<QuerySnapshot<Map<String, dynamic>>> future;
        if (cursor != null) {
          future = FirebaseFirestore.instance
              .collection('collection')
              .startAfter(cursor)
              .limit(pageSize)
              .get();
        } else {
          future = FirebaseFirestore.instance
              .collection('collection')
              .limit(pageSize)
              .get();
        }
        return future.then((value) {
          return ReadyListResponse.success(items: [
            /// ... resolve your item
          ], total: 10);
        });
      },
      controller: this,
    );

• the second if you need to listen to data changes then no need for paging so you can just return null to handler and use the normal way

  ListLoadingHandler<FakeItem>? get handler

 var firebaseStream=...
  firebaseStream.listen((data){
  if(has data)
    emit(ReadyListState.loaded(items: [],total: 0));
  else
   emit(ReadyListState.empty());
  });

[yelaseck]

Thank It works!