Issue #2527846 by dawehner, Wim Leers: Try to get rid of Url::fromRoute() in system_js_settings_alter()

core/lib/Drupal/Core/Installer/InstallerServiceProvider.php

@@ -46,6 +46,8 @@ class InstallerServiceProvider implements ServiceProviderInterface, ServiceModif
     $container
       ->register('url_generator', 'Drupal\Core\Routing\NullGenerator')
       ->addArgument(new Reference('request_stack'));
+    $container
+      ->register('path_processor_manager', 'Drupal\Core\PathProcessor\NullPathProcessorManager');
     $container
       ->register('router.dumper', 'Drupal\Core\Routing\NullMatcherDumper');
 

core/lib/Drupal/Core/PathProcessor/NullPathProcessorManager.php

@@ -0,0 +1,34 @@
+<?php
+
+/**
+ * @file
+ * Contains \Drupal\Core\PathProcessor\NullPathProcessorManager.
+ */
+
+namespace Drupal\Core\PathProcessor;
+
+use Drupal\Core\Render\BubbleableMetadata;
+use Symfony\Component\HttpFoundation\Request;
+
+/**
+ * Provides a null implementation of the path processor manager.
+ *
+ * This can be used for example in really early installer phases.
+ */
+class NullPathProcessorManager implements InboundPathProcessorInterface, OutboundPathProcessorInterface {
+
+  /**
+   * {@inheritdoc}
+   */
+  public function processInbound($path, Request $request) {
+    return $path;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function processOutbound($path, &$options = array(), Request $request = NULL, BubbleableMetadata $bubbleable_metadata = NULL) {
+    return $path;
+  }
+
+}

core/modules/system/src/Tests/Common/AttachedAssetsTest.php

@@ -215,7 +215,6 @@ class AttachedAssetsTest extends KernelTestBase {
 
     // Test whether the settings for core/drupalSettings are available.
     $this->assertTrue(isset($parsed_settings['path']['baseUrl']), 'drupalSettings.path.baseUrl is present.');
-    $this->assertTrue(isset($parsed_settings['path']['scriptPath']), 'drupalSettings.path.scriptPath is present.');
     $this->assertIdentical($parsed_settings['path']['pathPrefix'], 'yarhar', 'drupalSettings.path.pathPrefix is present and has the correct (overridden) value.');
     $this->assertIdentical($parsed_settings['path']['currentPath'], '', 'drupalSettings.path.currentPath is present and has the correct value.');
     $this->assertIdentical($parsed_settings['path']['currentPathIsAdmin'], FALSE, 'drupalSettings.path.currentPathIsAdmin is present and has the correct value.');

core/modules/system/system.module

@@ -648,21 +648,20 @@ function system_js_settings_build(&$settings, AttachedAssetsInterface $assets) {
  * as well as theme_token ajax state.
  */
 function system_js_settings_alter(&$settings, AttachedAssetsInterface $assets) {
-  // url() generates the script and prefix using hook_url_outbound_alter().
-  // Instead of running the hook_url_outbound_alter() again here, extract
-  // them from url().
-  // @todo Make this less hacky: https://www.drupal.org/node/1547376.
   $request = \Drupal::request();
-  $scriptPath = $request->getScriptName();
-
-  $pathPrefix = '';
   $current_query = $request->query->all();
-  Url::fromRoute('<front>', [], array('script' => &$scriptPath, 'prefix' => &$pathPrefix))->toString(TRUE);
+
+  // Let output path processors set a prefix.
+  /** @var \Drupal\Core\PathProcessor\OutboundPathProcessorInterface $path_processor */
+  $path_processor = \Drupal::service('path_processor_manager');
+  $options = ['prefix' => ''];
+  $path_processor->processOutbound('/', $options);
+  $pathPrefix = $options['prefix'];
+
   $current_path = \Drupal::routeMatch()->getRouteName() ? Url::fromRouteMatch(\Drupal::routeMatch())->getInternalPath() : '';
   $current_path_is_admin = \Drupal::service('router.admin_context')->isAdminRoute();
   $path_settings = [
     'baseUrl' => $request->getBaseUrl() . '/',
-    'scriptPath' => $scriptPath,
     'pathPrefix' => $pathPrefix,
     'currentPath' => $current_path,
     'currentPathIsAdmin' => $current_path_is_admin,