public function createComponentUsersGrid($name)
{
$groupId = $this->getParameter('groupId');
$grid = new Grid($this, $name);
$grid->setModel($this->userModel->findAll($groupId));
$grid->addColumnText('username', 'Užívateľ')->setSortable()->setFilterText();
$grid->addColumnText('email', 'Email-ová adresa')->setSortable()->setFilterText();
$grid->addColumnNumber('last_login', 'Posledné prihlásenie')->setSortable();
$grid->filterRenderType = $this->filterRenderType;
$grid->hasActions(false);
}