How can a Laravel developer implement or use Rules method correctly? Explain the flow, key steps, and practical considerations.

How can a Laravel developer implement or use Rules method correctly? Explain the flow, key steps, and practical considerations. A practical implementation starts by deciding which application layer owns the responsibility, then using Laravel's framework API consistently, validating input where necessary, authorizing state-changing actions, and testing both successful and failure paths. The rules method defines the validation constraints for incoming fields. Example pattern: class StoreProductRequest extends FormRequest { public function authorize(): bool { return auth()->check(); } public function rules(): array { return ['name' => ['required', 'string', 'max:255']]; } } The code is intentionally small; a production implementation should also consider validation, authorization, error handling, logging, monitoring, and test coverage relevant to the feature.