class UserModel { final int id; final String fullname; final String username; final String email; final String password; final int? level_id; UserModel({ required this.id, required this.fullname, required this.username, required this.email, required this.password, this.level_id, }); factory UserModel.fromJson(Map json) { return UserModel( id: json['id'] ?? 0, // Berikan nilai default jika null fullname: json['fullname'] ?? "", // Berikan nilai default jika null username: json['username'] ?? "", // Berikan nilai default jika null email: json['email'] ?? "", // Berikan nilai default jika null password: json['password'] ?? "", // Berikan nilai default jika null level_id: json['level_id'], // Biarkan null jika tidak ada ); } }