Make model class into List - flutter

Question

I'm trying to have 2 data responses for 2 api endpoints. 1 is a single response, and the other is an array of a single response.
When trying to create the List/array version, I get errors. What's the proper way to make the following model class into a List as well?
class SingleDataResponse {
final String id;
final String title;
SingleDataResponse({
this.id,
this.title
});
factory SingleDataResponse.fromJson(Map<String, dynamic> json) {
return SingleDataResponse(
id: json['id'],
title: json['title']
);
}
Map<String, dynamic> toJson() {
final Map<String, dynamic> data = new Map<String, dynamic>();
data['id'] = this.id;
data['title'] = this.title;
return data;
}
}
Here's what I'm expecting to get in the List Model:
[{_id: "5f210afa8215ff24307c6c53", title: "Cool Title"}]

Answer 1

just check out the example that I have created does this answer your question let me know.
This is the single object json
{
"_id": "5f210afa8215ff24307c6c53",
"title": "Cool Title"
}
This is the list of object:
[
{
"_id": "5f210afa8215ff24307c6c53",
"title": "Cool Title"
}
]
And this is the model class for the it I have taken the json locally.
// To parse this JSON data, do
import 'dart:convert';
// this is for single object
// final dataModel = singledataModelFromJson(jsonString);
DataModel singledataModelFromJson(String str) =>
DataModel.fromJson(json.decode(str));
String singledataModelToJson(DataModel data) => json.encode(data.toJson());
// this is for list of objects.
// final dataModel = dataModelFromJson(jsonString);
List<DataModel> dataModelFromJson(String str) =>
List<DataModel>.from(json.decode(str).map((x) => DataModel.fromJson(x)));
String dataModelToJson(List<DataModel> data) =>
json.encode(List<dynamic>.from(data.map((x) => x.toJson())));
class DataModel {
DataModel({
this.id,
this.title,
});
String id;
String title;
factory DataModel.fromJson(Map<String, dynamic> json) => DataModel(
id: json["_id"],
title: json["title"],
);
Map<String, dynamic> toJson() => {
"_id": id,
"title": title,
};
}
This is the logic in main:
import 'package:flutter/material.dart';
import 'package:json_parsing_example/models.dart';
void main() => runApp(MyApp());
class MyApp extends StatelessWidget {
#override
Widget build(BuildContext context) {
return MaterialApp(home: HomePage());
}
}
class HomePage extends StatefulWidget {
#override
_HomePageState createState() => _HomePageState();
}
class _HomePageState extends State<HomePage> {
double value;
#override
void initState() {
super.initState();
getdata();
}
getdata() async {
String data =
await DefaultAssetBundle.of(context).loadString("json/parse.json");
final singledataModel = singledataModelFromJson(data);
print('single model');
print(singledataModel.id);
print(singledataModel.title);
String listdata =
await DefaultAssetBundle.of(context).loadString("json/parse2.json");
List<DataModel> dataModel = dataModelFromJson(listdata);
print(dataModel.length);
print(dataModel[0].title);
}
#override
Widget build(BuildContext context) {
return Scaffold(body: Text(''));
}
}
Just check it and let me know if this is what you want.