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- <?php
- 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\SurrogateInterface;
- use Symfony\Component\HttpKernel\UriSigner;
- abstract class AbstractSurrogateFragmentRenderer extends RoutableFragmentRenderer
- {
- private $surrogate;
- private $inlineStrategy;
- private $signer;
-
- public function __construct(SurrogateInterface $surrogate = null, FragmentRendererInterface $inlineStrategy, UriSigner $signer = null)
- {
- $this->surrogate = $surrogate;
- $this->inlineStrategy = $inlineStrategy;
- $this->signer = $signer;
- }
-
- public function render($uri, Request $request, array $options = [])
- {
- if (!$this->surrogate || !$this->surrogate->hasSurrogateCapability($request)) {
- if ($uri instanceof ControllerReference && $this->containsNonScalars($uri->attributes)) {
- throw new \InvalidArgumentException('Passing non-scalar values as part of URI attributes to the ESI and SSI rendering strategies is not supported. Use a different rendering strategy or pass scalar values.');
- }
- return $this->inlineStrategy->render($uri, $request, $options);
- }
- if ($uri instanceof ControllerReference) {
- $uri = $this->generateSignedFragmentUri($uri, $request);
- }
- $alt = isset($options['alt']) ? $options['alt'] : null;
- if ($alt instanceof ControllerReference) {
- $alt = $this->generateSignedFragmentUri($alt, $request);
- }
- $tag = $this->surrogate->renderIncludeTag($uri, $alt, isset($options['ignore_errors']) ? $options['ignore_errors'] : false, isset($options['comment']) ? $options['comment'] : '');
- return new Response($tag);
- }
- private function generateSignedFragmentUri($uri, Request $request): string
- {
- if (null === $this->signer) {
- throw new \LogicException('You must use a URI when using the ESI rendering strategy or set a URL signer.');
- }
-
- $fragmentUri = $this->signer->sign($this->generateFragmentUri($uri, $request, true));
- return substr($fragmentUri, \strlen($request->getSchemeAndHttpHost()));
- }
- private function containsNonScalars(array $values): bool
- {
- foreach ($values as $value) {
- if (\is_array($value)) {
- return $this->containsNonScalars($value);
- } elseif (!is_scalar($value) && null !== $value) {
- return true;
- }
- }
- return false;
- }
- }
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