--- /dev/null
+<?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\HttpKernel\Controller\ControllerReference;
+use Symfony\Component\HttpFoundation\Request;
+use Symfony\Component\HttpKernel\EventListener\FragmentListener;
+
+/**
+ * Adds the possibility to generate a fragment URI for a given Controller.
+ *
+ * @author Fabien Potencier <fabien@symfony.com>
+ */
+abstract class RoutableFragmentRenderer implements FragmentRendererInterface
+{
+ private $fragmentPath = '/_fragment';
+
+ /**
+ * Sets the fragment path that triggers the fragment listener.
+ *
+ * @param string $path The path
+ *
+ * @see FragmentListener
+ */
+ public function setFragmentPath($path)
+ {
+ $this->fragmentPath = $path;
+ }
+
+ /**
+ * Generates a fragment URI for a given controller.
+ *
+ * @param ControllerReference $reference A ControllerReference instance
+ * @param Request $request A Request instance
+ * @param bool $absolute Whether to generate an absolute URL or not
+ * @param bool $strict Whether to allow non-scalar attributes or not
+ *
+ * @return string A fragment URI
+ */
+ protected function generateFragmentUri(ControllerReference $reference, Request $request, $absolute = false, $strict = true)
+ {
+ if ($strict) {
+ $this->checkNonScalar($reference->attributes);
+ }
+
+ // We need to forward the current _format and _locale values as we don't have
+ // a proper routing pattern to do the job for us.
+ // This makes things inconsistent if you switch from rendering a controller
+ // to rendering a route if the route pattern does not contain the special
+ // _format and _locale placeholders.
+ if (!isset($reference->attributes['_format'])) {
+ $reference->attributes['_format'] = $request->getRequestFormat();
+ }
+ if (!isset($reference->attributes['_locale'])) {
+ $reference->attributes['_locale'] = $request->getLocale();
+ }
+
+ $reference->attributes['_controller'] = $reference->controller;
+
+ $reference->query['_path'] = http_build_query($reference->attributes, '', '&');
+
+ $path = $this->fragmentPath.'?'.http_build_query($reference->query, '', '&');
+
+ if ($absolute) {
+ return $request->getUriForPath($path);
+ }
+
+ return $request->getBaseUrl().$path;
+ }
+
+ private function checkNonScalar($values)
+ {
+ foreach ($values as $key => $value) {
+ if (is_array($value)) {
+ $this->checkNonScalar($value);
+ } elseif (!is_scalar($value) && null !== $value) {
+ throw new \LogicException(sprintf('Controller attributes cannot contain non-scalar/non-null values (value for key "%s" is not a scalar or null).', $key));
+ }
+ }
+ }
+}