protected function _renderData()
{
$list = $this->getModel()->fetch();
$results = array();
foreach ($list as $item) {
$key = $item->filename;
$results[$key] = $item->toArray();
}
ksort($results);
$output = parent::_renderData();
$output['items'] = $results;
$output['total'] = count($list);
return $output;
}
