model_from_json 1.0.1

A Dart CLI tool that generates Equatable-ready Dart model classes directly from JSON files, with support for nested objects, lists, and automatic fromJson/toJson methods.

Model From JSON 🚀

A lightweight Dart CLI tool that generates Equatable-ready Dart model classes directly from a JSON file.

Designed for Flutter developers who want:

✅ Fast model generation
✅ Nested model support
✅ List of nested objects
✅ fromJson() + toJson() built-in
✅ Clean multi-file output
✅ Interactive CLI mode

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✨ Features

• ✅ Generates Dart model classes automatically from JSON
• ✅ Supports nested objects (profile, subscription, etc.)
• ✅ Supports lists of nested objects (accounts, features, etc.)
• ✅ Produces clean, Equatable-compatible models
• ✅ Generates multiple .dart files recursively
• ✅ Supports both:
  • Command mode
  • Interactive mode
• ✅ Optional output folder support (--out)

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📦 Installation

Activate globally (recommended)

dart pub global activate model_from_json

Now you can run:

model_from_json <json_path> --name ClassName

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🚀 Usage

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✅ Command Mode

Generate models from JSON in the current folder:

model_from_json complex.json --name ApiResponse

Generate models into a custom folder:

model_from_json complex.json --name ApiResponse --out lib/models

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✅ Interactive Mode

Run without arguments:

model_from_json

It will prompt you:

Enter JSON file path: ultra.json
Enter root class name: ApiResponse
Enter output folder [.] : lib/models

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🧾 Example Input

complex.json

{
  "user": {
    "id": 1,
    "name": "Dipesh"
  },
  "accounts": [
    {
      "broker": "zerodha",
      "balance": 250000
    }
  ]
}

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✅ Output Generated

api_response.dart

class ApiResponse extends Equatable {
  final User user;
  final List<Accounts> accounts;

  const ApiResponse({
    required this.user,
    required this.accounts,
  });

  factory ApiResponse.fromJson(Map<String, dynamic> json) {
    return ApiResponse(
      user: User.fromJson(json['user'] ?? {}),
      accounts: (json['accounts'] as List? ?? [])
          .map((e) => Accounts.fromJson(e))
          .toList(),
    );
  }

  Map<String, dynamic> toJson() => {
        'user': user.toJson(),
        'accounts': accounts.map((e) => e.toJson()).toList(),
      };

  @override
  List<Object?> get props => [user, accounts];
}

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📂 Output Structure

Example generated folder:

lib/models/
 ├── api_response.dart
 ├── user.dart
 ├── accounts.dart
 └── broker_settings.dart

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⚙️ CLI Options

Option	Description
--name	Root class name (required)
--out	Output folder (optional)
--help	Show usage help

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✅ Roadmap (Upcoming)

Planned improvements:

• Nullable type inference (String? phone)
• Dictionary/Map field support (Map<String,dynamic> metadata)
• Better naming rules (daily_pnl → DailyPnl)
• Barrel export generation (models.dart)
• Pub.dev v1.0 stable release

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🤝 Contributing

Pull requests are welcome!

To contribute:

git clone https://github.com/yourusername/model_from_json.git
cd model_from_json
dart pub get
dart run

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📜 License

MIT License © 2026 Dipesh Panchal

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⭐ Support

If you find this tool useful, consider starring the repo and sharing it with Flutter developers!