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Informations about the package data-transfer-object
📘 Data Transfer Object
A powerful, strict, and production-ready DTO layer for PHP/Laravel.
This package provides automatic type conversion, PHP 8 Attribute mapping, nested DTO support, Laravel Casts, and seamless integration with API Resources. It ensures your data is validated, normalized, and strongly typed from the moment it enters your application.
✨ Features
- 🚀 Auto-Conversion: Automatically transforms input arrays/JSON into strongly typed objects.
- 🔍 PHP 8 Attributes: Declarative field mapping with
#[Field]. - 🔄 Enum Casting: Strict type enforcement using native Enums.
- 🧩 Nested DTOs: Recursively resolves complex data structures.
- ⚙️ Strict Validation: Throws errors on type mismatches or missing required fields.
- 📦 Laravel Integration: Includes Model Casts and Form Request mapping.
- 🌐 Resource Pipeline: Request → DTO → API Resource flow.
- 🪞 High Performance: Uses reflection caching to minimize overhead.
Table of Contents
- Installation
- Quick Start
- Usage Guide
- Manual Instantiation
- Nested DTOs
- Laravel Integration
- Request Injection
- Model Casts
- API Resources
- Reference
- Supported Types
- Testing
- License
📦 Installation
Requires PHP 8.3+
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🚀 Quick Start
1. Define your DTO
Create a class extending AbstractDTO and use attributes to define fields.
2. Use it
🎯 Usage Guide
Manual Instantiation
You can instantiate a DTO with any iterable (array or collection). Keys are automatically normalized from camelCase to snake_case during processing.
Nested DTOs
Complex structures are handled automatically. Simply typehint the property with another DTO class and use TypeEnum::DTO.
Input:
Result: $dto->profile is an instance of ProfileDTO.
📥 Laravel Integration
Request Injection
The package integrates seamlessly with Laravel's Service Container. You can typehint a DTO in your Controller method, and it will automatically hydrate from the current Request (supporting JSON, Form Data, Query Params).
Alternatively, use fromRequest:
Model Casts
Store DTOs directly in your database using Laravel's Custom Casts. The DTO is serialized to JSON on save and hydrated back to a DTO on retrieval.
In your Model:
Usage:
API Resources
DTOs implement Arrayable, making them compatible with Laravel API Resources.
🧰 Reference
Supported Types (TypeEnum)
The #[Field] attribute requires a type definition from TypeEnum.
| Enum Case | Description |
|---|---|
TypeEnum::INT |
Casts to integer |
TypeEnum::FLOAT |
Casts to float |
TypeEnum::STRING |
Casts to string |
TypeEnum::BOOLEAN |
Casts to boolean |
TypeEnum::ARRAY |
Casts to array |
TypeEnum::DATE |
Handles date strings |
TypeEnum::DTO |
Hydrates a nested DTO |
TypeEnum::COLLECTION |
Hydrates a collection of DTOs/items |
TypeEnum::DYNAMIC |
No casting, keeps original type |
🧠 Architecture & Principles
- Immutability: DTOs are designed to be immutable after instantiation.
- Safety: Internal fields (
_raw, etc.) are hidden. - Normalization: Input keys are normalized (snake_case/camelCase handling).
- Performance: Reflection metadata is cached to ensure production speed.
🧪 Testing
Run the full test suite:
📝 License
This package is open-sourced software licensed under the MIT license.
All versions of data-transfer-object with dependencies
illuminate/support Version ^10.0 || ^11.0 || ^12.0
illuminate/contracts Version ^10.0 || ^11.0 || ^12.0
illuminate/collections Version ^10.0 || ^11.0 || ^12.0
illuminate/database Version ^10.0 || ^11.0 || ^12.0