public function search()
{
$criteria = new CDbCriteria();
$criteria->compare('id', $this->id);
$criteria->compare('url', $this->url, true);
$criteria->compare('changefreq', $this->changefreq, true);
$criteria->compare('priority', $this->priority);
$criteria->compare('status', $this->status);
return new CActiveDataProvider(get_class($this), ['criteria' => $criteria, 'sort' => ['defaultOrder' => 'url ASC']]);
}