public function clearAction()
{
$this->_helper->viewRenderer->setNeverRender(true);
$histories = new Model_Histories();
$histories->clear($this->user);
$json = new StdClass();
$json->code = 200;
echo Zend_Json::encode($json);
}
private function _saveHistory($site, $result)
{
$histories = new Model_Histories();
$history = $histories->createRow();
$history->user_id = $this->user->id;
$history->date = date('Y-m-d H:i:s');
$history->site = $site;
$history->ip = $_SERVER['REMOTE_ADDR'];
$history->result = $result;
$history->save();
}