Validator question

class MeetController extends Controller 
{
    public function store() 
    {
        $v = Validator::make(request()->all(), Meets::rules());

        if($v->fails()) {
            #return error
	}
	
	#continue
    }
}

-------------

class Meets 
{
    public static function rules()
    {
        return [
            'date_type'      => 'required|numeric|in:1,2,3',
            'meal_times'     => (request('date_type') == 1) ? 'required|numeric|in:1,2,3,4,5' : '',
        ];
    }
}

@Mombuyish thx