api_gen 0.0.2

A simple Dart code generator that creates model classes (with fromJson/toJson) from a JSON schema, saving time on boilerplate in Flutter/Dart projects.

api_gen

A simple Dart code generator for creating model classes (fromJson / toJson) from a JSON schema. Skip boilerplate and speed up API integration in your Dart and Flutter projects.

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Features

• Generate Dart model classes from a JSON schema
• Automatic fromJson and toJson methods
• CLI and programmatic usage
• Output directory is created automatically

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Getting Started

Add api_gen to your pubspec.yaml (if using as a dependency):

dependencies:
	api_gen: <latest_version>

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Usage

1. Prepare Your Schema

Create a JSON schema file, e.g. api.json:

{
  "user": {
    "id": "int",
    "name": "String",
    "email": { "type": "String", "required": false }
  }
}

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2. Generate Models via CLI

From your project root, run:

# Usage: dart run api_gen -i <input_schema> -o <output_dir>
dart run api_gen -i api.json -o lib/models

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3. Generate Models Programmatically

import 'dart:convert';
import 'dart:io';
import 'package:api_gen/api_gen.dart';

void main() async {
	final schemaFile = File('../api.json');
	final schema = jsonDecode(await schemaFile.readAsString()) as Map<String, dynamic>;
	final generator = DartModelGenerator('models');
	generator.generate(schema);
	print('✅ Models generated!');
}

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Example

See the example/ directory and its README for a complete working example, including project structure, schema, and both CLI and Dart API usage.

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Contributing

Contributions are welcome! Please open issues or submit pull requests.

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License

This project is licensed under the MIT License.