public function admin_ajax_update_sort($userGroupId)
{
if ($this->request->data) {
$conditions = $this->_createAdminIndexConditions($userGroupId);
if ($this->Permission->changeSort($this->request->data['Sort']['id'], $this->request->data['Sort']['offset'], $conditions)) {
echo true;
} else {
$this->ajaxError(500, $this->Permission->validationErrors);
}
} else {
$this->ajaxError(500, '無効な処理です。');
}
exit;
}