JSON to Dart Class

Dart JSON Serialization

Dart classes can be manually serialized using fromJson/toJson methods or with code generation via json_serializable. Manual serialization is straightforward and requires no build step.

# pubspec.yaml (for Equatable support)
dependencies:
  equatable: ^2.0.5

// Usage example
final json = {'id': 1, 'name': 'Alice'};
final user = Root.fromJson(json);
final backToJson = user.toJson();

Parsing JSON in Flutter

import 'dart:convert';

// From HTTP response
final response = await http.get(Uri.parse('https://api.example.com/user'));
if (response.statusCode == 200) {
  final Map<String, dynamic> data = json.decode(response.body);
  final user = Root.fromJson(data);
  print(user.name);
}

Common Use Cases

• REST APIs: Deserialize HTTP responses in Flutter apps
• Local Storage: Encode/decode objects for SharedPreferences or Hive
• BLoC Pattern: Equatable models for state management
• Firebase: Map Firestore document snapshots to typed models
• WebSockets: Parse real-time JSON message streams

FAQ