public function eliminarAction()
 {
     $id = (int) $this->params()->fromRoute('id', 0);
     if (!$id) {
         return $this->redirect()->toRoute('admin', array('controller' => 'utenti', 'action' => 'index'));
     }
     $producto = new Utenti();
     $producto->setId($id);
     $this->getUtentiDao()->eliminare($producto);
     return $this->redirect()->toRoute('admin', array('controller' => 'utenti', 'action' => 'index'));
 }