Form Requests: Clean Validation Logic

Form requests keep controllers slim by moving validation logic into separate classes.

## Create request

```bash
php artisan make:request StorePostRequest
```

## Define rules

```php
public function rules(): array {
  return [
    'title' => 'required|min:3',
    'body' => 'required|min:10',
  ];
}
```

## Use in controller

```php
public function store(StorePostRequest $request) {
  Post::create($request->validated());
}
```

## Flow

```mermaid
flowchart LR
  A[Controller] --> B[Form Request]
  B --> C[Validated Data]
  C --> D[Model]
```

In the next tutorial, we will control access using authorization policies.