Laravel Clean Architecture

Laravel Clean Architecture

Priority: P1 (HIGH)

Structure

app/
├── Domains/            # Logic grouped by business domain
│   └── {Domain}/
│       ├── Actions/    # Single use-case logic
│       ├── DTOs/       # Immutable data structures
│       └── Contracts/  # Interfaces for decoupling
└── Providers/          # Dependency bindings

Implementation Guidelines

Domain-Driven Design (DDD)

• Grouping: Organize code in app/Domains/Order/{Actions,DTOs,Contracts}/. Group by business domain (User, Order, Payment) — not by type (Controllers, Models).
• Core Models: Keep standard Eloquent models in app/Models/.
• Separation: Never put Eloquent queries in controllers; delegate to Action classes for use-case logic.

Data Transfer Objects (DTOs)

• Immutability: Create typed readonly DTOs:

  readonly class OrderData {
      public function __construct(
          public readonly string $title,
          public readonly int $amount
      ) {}
  }
  readonly class CreateOrderData {
      public function __construct(
          public readonly string $customerId,
          public readonly int $amount
      ) {}
  }
  

  Immutable by default in PHP 8.1+. DTOs cross boundaries — pass between layers instead of raw arrays or Eloquent models. No raw arrays between layers.

Repository Pattern & Decoupling

• Interfaces: Create Contracts/OrderRepository interface and implement EloquentOrderRepository.
• Binding: Bind interfaces to implementations in AppServiceProvider via $this->app->bind(OrderRepository::class, EloquentOrderRepository::class).
• Usage: Inject interfaces into your actions/services.
• Layer Flow: Controller → Action → Repository Interface → Eloquent. DTOs cross boundaries at every layer transition.

Anti-Patterns

• No Eloquent in Controllers: Bridge layers with DTOs and Actions.
• No raw arrays across layers: Use typed readonly DTOs.
• No God Services: Break into single-responsibility Actions.
• No concrete dependencies: Depend on Interfaces, not implementations.

References

• DDD & Repository Patterns