Používání DependentSelectBox ve formuláři

Zdravím

už nějakou dobu používám DependentSelectBox od NasExt\Forms\DependentData ale narazil jsem na problém kdy z databáze chci vrátit důvody.

Náhled DB:

DROP TABLE IF EXISTS `reason`;
CREATE TABLE `reason` (
  `reason_id` int(11) NOT NULL AUTO_INCREMENT,
  `title` varchar(100) COLLATE utf8_czech_ci NOT NULL,
  `order_no` int(11) NOT NULL,
  `hidden` tinyint(4) NOT NULL,
  `parent_reason_id` int(11) DEFAULT NULL,
  PRIMARY KEY (`reason_id`),
  KEY `perrent_reason_id` (`parent_reason_id`),
  CONSTRAINT `reason_ibfk_1` FOREIGN KEY (`parent_reason_id`) REFERENCES `reason` (`reason_id`) ON DELETE CASCADE ON UPDATE CASCADE
) ENGINE=InnoDB DEFAULT CHARSET=utf8 COLLATE=utf8_czech_ci;

Model:

/**
 * @return \Nette\Database\Table\Selection
 */
public function getReason(){
    return $this->database->table(self::TABLE_REASON)->where(self::COLUMN_PARRENT_ID, 'IS NULL');
}

/**
 * @param $id
 * @return \Nette\Database\Table\Selection
 */
public function getReasonParrentID($id) {
    return $this->database->table(self::TABLE_REASON)
        ->where(self::COLUMN_PARRENT_ID, $id);
}

a Formulář:

protected function createComponentStatusProjectMessageForm()
{
    $form = new Form;
    $form->addHidden('project_id');
    $form->addHidden('status');
    $form->addHidden('date');
    $form->addSelect('reason_name', '', $this->projectRepository->getReason()->fetchPairs('reason_id','title'))
        ->setPrompt('Vyberte důvod')->setRequired('Důvod je povinný!');
    $form->addDependentSelectBox('reason', '', $form['reason_name'])
        ->setDependentCallback(function ($values){
            $data = new \NasExt\Forms\DependentData;
            return $data->setItems($this->projectRepository->getReasonParrentID($values['reason_name'])->fetchPairs('reason_id', 'title'));
        })
        ->setPrompt('Vyberte Kategorii')->setRequired('Kategorie je povinná');

    $form->addTextArea('message')->setRequired('Vyplňte text statusu!');
    $form->addSubmit('submit', 'Uložit');
    $form->onSuccess[] = [$this, 'editorStatusProjectMessageSucceeded'];
    return $form;
}

Problém je že když si vyberu hlavní Kategorie tudíž ty které v db mají nastavené parrent_reason_id na NULL tak se mi již nevykreslí ty které spadají do této kategorie.

Vykreslení:

{block modalHeader}
    {block title} Důvod nezobchodování projektu?{/block}
{/block}
{block modal}
    <form n:name="statusProjectMessageForm">
        <div class="form-group row">
            <label for="normal-field"
                   class="col-md-4 form-control-label text-md-right">Důvod</label>
            <div class="col-md-4">
                <div class="form-group">
                    <select class="form-control" n:name="reason"></select>
                </div>
            </div>
            <div class="col-md-4">
                <div class="form-group">
                    <select class="form-control" n:name="reason_name" ></select>
                </div>
            </div>
        </div>
        <div class="form-group row">
            <label for="normal-field"
                   class="col-md-4 form-control-label text-md-right">Popis důvodu</label>
            <div class="col-md-7">
                <textarea n:name="message" rows="5" cols="45" placeholder="Vložte důvod nezobchodování..."></textarea>
            </div>
        </div>
        <div class="form-actions">
            <div class="row">
                <div class="col-md-offset-4 col-md-7">
                    <button n:name=submit type="submit" class="btn btn-primary">Uložit
                    </button>
                    <button type="button" class="btn btn-gray" data-dismiss="modal">Zavřít</button>
                </div>
            </div>
        </div>
    </form>
    <script src="{$basePath}/js/live-form-validation.min.js"></script>
    <script src="{$basePath}/js/dependentSelectBox.js"></script>
    <script>
        // @param callback a handler to be called when Ajax requests complete
        $('[data-dependentselectbox]').dependentSelectBox();
    </script>
{/block}

Mohu se zeptat jak bych to mohl řešit?

Díky