Laravel Architecture

To refactor a fat Laravel controller into a skinny controller, extract business logic into dedicated Service or Action classes. This enforces the Single Responsibility Principle, keeping controllers focused on HTTP request handling and routing data to the service layer.

Using dependency injection instead of manual instantiation in Laravel leverages the Service Container to manage class dependencies. This approach improves code testability, decouples components, and ensures scalable architecture by resolving dependencies automatically.

The best way to handle inline validation in Laravel is to replace it with Form Requests. This separates validation logic from controllers, adhering to Separation of Concerns and making the codebase easier to maintain, test, and extend.

You need a service layer in your PHP application when controllers become bloated with business logic. Implementing a service layer enforces contract-first design, separates concerns, and ensures new features adhere to established architectural patterns for scalability.

Laravel architecture can enforce SOLID principles for large projects by promoting the Single Responsibility Principle through clear separation of concerns. Using Service classes and Dependency Injection ensures the codebase remains easier to understand, test, and extend.