public function indexAction()
{
$source = new Entity('OjsJournalBundle:MailTemplate');
$tableAlias = $source->getTableAlias();
$source->manipulateQuery(function ($query) use($tableAlias) {
$query->andWhere($tableAlias . '.journal IS NULL');
});
$grid = $this->get('grid')->setSource($source);
$gridAction = $this->get('grid_action');
$actionColumn = new ActionsColumn("actions", 'actions');
$rowAction[] = $gridAction->showAction('ojs_admin_mail_template_show', 'id');
$rowAction[] = $gridAction->editAction('ojs_admin_mail_template_edit', 'id');
$actionColumn->setRowActions($rowAction);
$grid->addColumn($actionColumn);
$data = [];
$data['grid'] = $grid;
return $grid->getGridResponse('OjsAdminBundle:AdminMailTemplate:index.html.twig', $data);
}