import 'package:angel3_model/angel3_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) => Postcard( id: data['id'].toString(), location: data['location'].toString(), message: data['message'].toString()); @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}; } }