setCacheControlNoCache example

  /** * Add Cache-Control and Expires headers to a response which is not cacheable. * * @param \Symfony\Component\HttpFoundation\Response $response * A response object. * @param \Symfony\Component\HttpFoundation\Request $request * A request object. */
  protected function setResponseNotCacheable(Response $response, Request $request) {
    $this->setCacheControlNoCache($response);
    $this->setExpiresNoCache($response);

    // There is no point in sending along headers necessary for cache     // revalidation, if caching by proxies and browsers is denied in the first     // place. Therefore remove ETag, Last-Modified and Vary in that case.     $response->setEtag(NULL);
    $response->setLastModified(NULL);
    $response->headers->remove('Vary');
  }

  /** * Add Cache-Control and Expires headers to a cacheable response. * * @param \Symfony\Component\HttpFoundation\Response $response * A response object. * @param \Symfony\Component\HttpFoundation\Request $request * A request object. */