Doctrine_Record::postDelete PHP Méthode

    public function postDelete($event)
    {
    }

 public function postDelete($event)
 {
     parent::postDelete($event);
     if ($this->tipo == 'documento') {
         unlink('uploads/documentos/' . $this->filename);
         unlink('uploads/documentos/' . preg_replace('/\\.pdf$/', '.copia.pdf', $this->filename));
     } else {
         if ($this->tipo == 'dato') {
             unlink('uploads/datos/' . $this->filename);
         }
     }
 }