大幅変更＆環境バージョンアップ

lib/model/user.dart

@@ -0,0 +1,47 @@
+// lib/models/user.dart
+
+class User {
+  final int? id;
+  final String? email;
+  final String firstname;
+  final String lastname;
+  final DateTime? dateOfBirth;
+  late final bool female;
+  final bool isActive;
+
+  User({
+    this.id,
+    this.email,
+    required this.firstname,
+    required this.lastname,
+    this.dateOfBirth,
+    required this.female,
+    required this.isActive,
+  });
+
+  factory User.fromJson(Map<String, dynamic> json) {
+    return User(
+      id: json['id'],
+      email: json['email'],
+      firstname: json['firstname'] ?? 'Unknown',
+      lastname: json['lastname'] ?? 'Unknown',
+      dateOfBirth: json['date_of_birth'] != null
+          ? DateTime.tryParse(json['date_of_birth'])
+          : null,
+      female: json['female'] ?? false,
+      isActive: json['is_active'] ?? false,
+    );
+  }
+
+  Map<String, dynamic> toJson() {
+    return {
+      'id': id,
+      'email': email,
+      'firstname': firstname,
+      'lastname': lastname,
+      'date_of_birth': dateOfBirth?.toIso8601String(),
+      'female': female,
+      'is_active': isActive,
+    };
+  }
+}