/**
  * Redirects to the specified route.
  * 
  * @param string $routeName
  * @param array $params
  * @param array $options
  * @return \Zend\Http\Response
  */
 protected function redirectToRoute($routeName, array $params = array(), array $options = array())
 {
     $path = $this->url()->fromRoute($routeName, $params, $options);
     $uri = new \Zend\Uri\Http($this->getBaseUri());
     $uri->setPath($path);
     return $this->redirect()->toUrl($uri->toString());
 }