Laravel Custom Response Message For Request

I speak to my laravel server through endpoints. I do not use Laravel View so I have no access to its session.

When a required request comes in, I need to return a response ie401 etc per params? Possible?

php artisan make:request FooBar

Inside FooBar:

public function rules()
{
    return [
        'subtitle' => 'required|max:255',
        'title'    => 'required|max:255',
    ];
}

public function messages()
{
    return [
        'title.required' => abort(401, sorry),
        // and others...
    ];
}

If I should use a string message instead of abort() laravel redirects without a response, I use postman and I see status 200. How to achieve what I want? I want to customise each required param with a response.

via Sylar