public function save()
 {
     $values = $this->getValues();
     // TODO : find a better way to populate values.
     foreach ($values['sfAsset'] as $key => $value) {
         $sf_asset = new sfAsset();
         $sf_asset->fromArray($value);
         $sf_asset->setBinaryContent($value['binary_content']);
         $sf_asset->save();
     }
 }