/**
* Main action for viewing content through a location in the repository.
* Response will be cached with HttpCache validation model (Etag)
*
* it is possible to change the ttl of the cache by setting a global Variable
*
* e.g. in twig template with a twig function which set the global variable
*
* $GLOBALS['EZ_TWIG_HTTP_CACHE_TTL'] = 0; => disable cache
* $GLOBALS['EZ_TWIG_HTTP_CACHE_TTL'] = 3; => 3 s
*
* @param int $locationId
* @param string $viewType
* @param boolean $layout
* @param array $params
*
* @throws \Symfony\Component\Security\Core\Exception\AccessDeniedException
* @throws \Exception
*
* @return \Symfony\Component\HttpFoundation\Response
*/
public function viewLocation($locationId, $viewType, $layout = false, array $params = array())
{
// run the original ViewController from Ez
// if all is ok we get a Response object otherwise an exception
$response = parent::viewLocation($locationId, $viewType, $layout, $params);
if ($response instanceof Response) {
if (isset($GLOBALS['CJW_HTTP_CACHE_TTL'])) {
$ttlFromTemplate = (int) $GLOBALS['CJW_HTTP_CACHE_TTL'];
$response->setTtl($ttlFromTemplate);
if ($ttlFromTemplate == 0) {
$response->setPrivate();
}
//echo __METHOD__ . " get http_cache ttl from tpl: $ttlFromTemplate<br>";
//$response->headers->set( 'X-Cache-Ttl', $ttlFromTemplate );
}
}
return $response;
}
/**
* Build the response so that depending on settings it's cacheable
*
* @param string|null $etag
* @param \DateTime|null $lastModified
*
* @return \Symfony\Component\HttpFoundation\Response
* @see \eZ\Publish\Core\MVC\Symfony\Controller\Content\ViewController::buildResponse
*/
protected function buildResponse($etag = null, DateTime $lastModified = null)
{
if ('POST' === $this->getRequest()->getMethod()) {
$response = new Response();
$response->setPrivate();
return $response;
} else {
return parent::buildResponse($etag, $lastModified);
}
}