Checkboxy u položek DB ke smazání

Zdravím,

snažím se podle dokumentace dát dohromady formulář na mazání položek v DB, ale bohužel mi metoda getHttpFata vrací prázdné pole (zkoušel jsem $marked dumpovat). Tím pádem to do cyklu foreach ani nevleze. Moc díky za radu.

Tohle mám v šabloně:

{block content}
<div id="banner">
	<h1 n:block=title>NT1 application</h1>
</div>

<div id="content">

    <table>
        <tr>
            <th>Datum</th>
            <th>Autor</th>
            <th>E-mail</th>
            <th>Komentář</th>
        </tr>

        {foreach $comments as $comment}
            <tr>
                <td><input type=checkbox name="marked[]" value={$comment->id}></td>
                <td>{$comment->created_at|date:'F j, Y'}</td>
                <td>{$comment->name}</td>
                <td>{$comment->email}</td>
                <td>{$comment->content}</td>
            </tr>
        {/foreach}
    </table>

    {control deleteForm}

    <p><a n:href="Homepage:default">zpet na vypis prispevku</a></p>

</div>
{/block}

Tohle pak v prezenteru:

<?php
    protected function createComponentDeleteForm()
    {
        $form = new Form; // means Nette\Application\UI\Form

        $form->addSubmit('submit', 'Smazat označené');

        $form->onSuccess[] = [$this, 'deleteFormSucceeded'];

        return $form;
    }

    public function deleteFormSucceeded($form, $values)
    {
        $marked = $form->getHttpData($form::DATA_TEXT, 'marked[]');
        //$marked = $form->getHttpData($form:: DATA_TEXT | $form::DATA_KEYS, 'marked[]');

        foreach ($marked as $to_delete){
            $count_deleted = $this->database->table('comments')
                ->where('id',$to_delete)
                ->delete();
        }

        $this->flashMessage('Uspesne smazano', 'success');
        $this->redirect('this');
    }

?>