Version 1

[yaffs-website] / web / core / lib / Drupal / Core / Routing / Enhancer / EntityRevisionRouteEnhancer.php

diff --git a/web/core/lib/Drupal/Core/Routing/Enhancer/EntityRevisionRouteEnhancer.php b/web/core/lib/Drupal/Core/Routing/Enhancer/EntityRevisionRouteEnhancer.php
new file mode 100644 (file)
index 0000000..9880edd
--- /dev/null
+++ b/web/core/lib/Drupal/Core/Routing/Enhancer/EntityRevisionRouteEnhancer.php
@@ -0,0 +1,47 @@
+<?php
+
+namespace Drupal\Core\Routing\Enhancer;
+
+use Symfony\Cmf\Component\Routing\RouteObjectInterface;
+use Symfony\Component\HttpFoundation\Request;
+use Symfony\Component\Routing\Route;
+
+/**
+ * Adds _entity_revision to the request attributes, if possible.
+ */
+class EntityRevisionRouteEnhancer implements RouteEnhancerInterface {
+
+  /**
+   * {@inheritdoc}
+   */
+  public function applies(Route $route) {
+    // Check whether there is any entity revision parameter.
+    $parameters = $route->getOption('parameters') ?: [];
+    foreach ($parameters as $info) {
+      if (isset($info['type']) && strpos($info['type'], 'entity_revision:') === 0) {
+        return TRUE;
+      }
+    }
+    return FALSE;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function enhance(array $defaults, Request $request) {
+    /** @var \Symfony\Component\Routing\Route $route */
+    $route = $defaults[RouteObjectInterface::ROUTE_OBJECT];
+    $options = $route->getOptions();
+    if (isset($options['parameters'])) {
+      foreach ($options['parameters'] as $name => $details) {
+        if (!empty($details['type']) && strpos($details['type'], 'entity_revision:') !== FALSE) {
+          $defaults['_entity_revision'] = $defaults[$name];
+          break;
+        }
+      }
+    }
+
+    return $defaults;
+  }
+
+}