Problem s db a cudzimi klucmi

Caute mam v DB tabulku mineral a v nej stlpce idSkupina (cudzim klucom previazane na tab. skupina) a idVryp(cudzim klucom naviazanu na tab. vryp)

Presenter
<?
class MineralPresenter extends BasePresenter {

/**
* (non-phpDoc)
*
* @see Nette\Application\Presenter#startup()
*
 */

private $mineralRepository;
private $tasks;

protected function startup() {
parent::startup();
$this->mineralRepository = $this->context->mineralRepository;
 }

public function actionDefault() {

}

public function renderDefault() {
$this->template->tasks = $this->mineralRepository->findAllMineral();
 }

}
?>\

default.latte

<?
<table>
<thead>
<tr>
<th>Minerál</th>

</tr>
</thead>
<tbody>

{foreach $tasks as $task}
<tr>

<td>{$iterator->getCounter()} </td>
<td>{$task->nazov}</td>
<td>{$task->skupina->nazov}</td>
<td>{$task->chemickeZlozenie}</td>
<td>{$task->idKrystalografickaSustava->vlastnost}</td>
<td>{$task->Vryp->nazov}</td>
<td>{$task->tvrdostOd}</td>
<td>{$task->tvrdostDo}</td>
<td>{$task->idStiepatelnost}</td>
<td>{$task->hustotaOd}</td>
<td>{$task->hustotaDo}</td>
 </tr>

{/foreach}

</tbody>
</table>
?>

no a problem je v tom ze nazov skupiny mi bez problemov natiahne ale nazov vrypu nie.

Nechapem

Vdaka