import 'package:angel_model/angel_model.dart'; class Postcard extends Model { String location; String message; Postcard({String id, this.location, this.message}) { this.id = id; } factory Postcard.fromJson(Map data) => new Postcard( id: data['id'], location: data['location'], message: data['message']); @override bool operator ==(other) { if (!(other is Postcard)) return false; return id == other.id && location == other.location && message == other.message; } Map toJson() { return {'id': id, 'location': location, 'message': message}; } }