Rx Flutter Request List From JsonPalceHolder - flutter

Question

I try to get List from jsonPlaceHolder using flutter rxdart stream and try to apply bloc pattern on it.
this class that response for get post response from api
import 'dart:async';
import 'dart:convert';
import 'package:http/http.dart' as http;
import '../models/post_item.dart';
class ItemApi {
Future<List<JsonItem>> getPost() async {
String _url = 'https://jsonplaceholder.typicode.com/posts';
final _response = await http.get(_url);
if (_response.statusCode == 200) {
return (json.decode(_response.body) as List)
.map((jsonItem) => JsonItem.fromJson(jsonItem))
.toList();
}
}
}
I using repository class to wrap using ItemApi class
import 'json_item_request.dart';
import '../models/post_item.dart';
class Repository{
final jsonItemResponse = ItemApi();
Future<List<JsonItem>> getItem() => jsonItemResponse.getPost();
}
at the last i using bloc class that response for get data and set it inside PublishSubject
import '../models/post_item.dart';
import '../resouces/repository.dart';
import 'package:rxdart/rxdart.dart';
class JsonBloc {
final _repository = Repository();
final _streamOfJsonList = PublishSubject<List<JsonItem>>();
Observable<List<JsonItem>> get jsonList=> _streamOfJsonList.stream;
fetchAllPost() async{
Future<List<JsonItem>> list = _repository.getItem();
}
dispose(){
_streamOfJsonList.close();
}
}
My question is how i can set response inside _streamOfJsonList variable to using it when list changed.

Answer 1

Sounds like you already have all the moving parts connected? If so you just need to add the item list to the PublishSubject:
void fetchAllPost() async {
List<JsonItem> list = await _repository.getItem();
_streamOfJsonList.add(list);
}
This will trigger the onListen callback with the new list on anything that is listening to the stream.

Answer 2

You can add error and data to ReplaySubject like below :
void fetchAllPost() async {
List<JsonItem> list = await _repository.getItem();
if (list != null) {
_streamOfJsonList.sink.add(list);
} else {
_streamOfJsonList.addError("ERROR");
}
}