Laravel Coding Guidelines

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Use Request class for validations ​

Move validation from controllers to Request classes. ​

Bad:

php
public function store(Request $request): Redirect
{
    $request->validate([
        'title' => 'required|unique:posts|max:255',
        'body' => 'required',
        'publish_at' => 'nullable|date',
    ]);

    ...
}

Good:

php
public function store(PostRequest $request): Redirect
{
    ...
}

class PostRequest extends Request
{
    public function rules(): array
    {
        return [
            'title' => 'required|unique:posts|max:255',
            'body' => 'required',
            'publish_at' => 'nullable|date',
        ];
    }
}