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<?php /* * This file is part of the Symfony package. * * (c) Fabien Potencier <fabien@symfony.com> * * For the full copyright and license information, please view the LICENSE * file that was distributed with this source code. */ namespace Symfony\Component\HttpKernel\Fragment; use Symfony\Component\HttpFoundation\Request; use Symfony\Component\HttpFoundation\Response; use Symfony\Component\HttpKernel\Controller\ControllerReference; use Symfony\Component\HttpKernel\HttpCache\Esi; /** * Implements the ESI rendering strategy. * * @author Fabien Potencier <fabien@symfony.com> */ class EsiFragmentRenderer extends RoutableFragmentRenderer { private $esi; private $inlineStrategy; /** * Constructor. * * The "fallback" strategy when ESI is not available should always be an * instance of InlineFragmentRenderer. * * @param Esi $esi An Esi instance * @param InlineFragmentRenderer $inlineStrategy The inline strategy to use when ESI is not supported */ public function __construct(Esi $esi = null, InlineFragmentRenderer $inlineStrategy) { $this->esi = $esi; $this->inlineStrategy = $inlineStrategy; } /** * {@inheritdoc} * * Note that if the current Request has no ESI capability, this method * falls back to use the inline rendering strategy. * * Additional available options: * * * alt: an alternative URI to render in case of an error * * comment: a comment to add when returning an esi:include tag * * @see Symfony\Component\HttpKernel\HttpCache\ESI */ public function render($uri, Request $request, array $options = array()) { if (!$this->esi || !$this->esi->hasSurrogateEsiCapability($request)) { return $this->inlineStrategy->render($uri, $request, $options); } if ($uri instanceof ControllerReference) { $uri = $this->generateFragmentUri($uri, $request); } $alt = isset($options['alt']) ? $options['alt'] : null; if ($alt instanceof ControllerReference) { $alt = $this->generateFragmentUri($alt, $request); } $tag = $this->esi->renderIncludeTag($uri, $alt, isset($options['ignore_errors']) ? $options['ignore_errors'] : false, isset($options['comment']) ? $options['comment'] : ''); return new Response($tag); } /** * {@inheritdoc} */ public function getName() { return 'esi'; } }