/**
* Render the feed in specified format.
*
* @param Feed $feed Feed to render
*
* @return string
*
* @throws \InvalidArgumentException if given format formatter does not exists
*/
public function render(Feed $feed)
{
$items = $this->dm->getRepository('Api43FeedBundle:FeedItem')->findByFeed($feed->getId(), $feed->getSortBy());
$feedUrl = $this->router->generate('feed_xml', array('slug' => $feed->getSlug()), true);
switch ($feed->getFormatter()) {
case 'rss':
$formatter = new Formatter\RssFormatter($feed, $items, $feedUrl, $this->generator);
break;
case 'atom':
$formatter = new Formatter\AtomFormatter($feed, $items, $feedUrl, $this->generator);
break;
default:
throw new \InvalidArgumentException(sprintf("Format '%s' is not available. Please see documentation.", $feed->getFormatter()));
}
return $formatter->render();
}
