Issue #3009003 by ilya.no, phenaproxima, b_sharpe, kirkkala, kekkis, alexpott, seanB, marcoscano, joshua.boltz, vood002: Expose oEmbed resource object to iframe template

core/modules/media/media.module

@@ -77,6 +77,7 @@ function media_theme() {
     ],
     'media_oembed_iframe' => [
       'variables' => [
+        'resource' => NULL,
         'media' => NULL,
         'placeholder_token' => '',
       ],

core/modules/media/src/Controller/OEmbedIframeController.php

@@ -146,6 +146,7 @@ class OEmbedIframeController implements ContainerInjectionInterface {
       // metadata of the rendered HTML will be captured correctly.
       $element = [
         '#theme' => 'media_oembed_iframe',
+        '#resource' => $resource,
         // Even though the resource HTML is untrusted, IFrameMarkup::create()
         // will create a trusted string. The only reason this is okay is
         // because we are serving it in an iframe, which will mitigate the

core/modules/media/tests/modules/media_test_oembed/media_test_oembed.module

@@ -7,6 +7,15 @@
 
 use Drupal\media\OEmbed\Provider;
 
+/**
+ * Implements hook_preprocess_media_oembed_iframe().
+ */
+function media_test_oembed_preprocess_media_oembed_iframe(array &$variables) {
+  if ($variables['resource']->getProvider()->getName() === 'YouTube') {
+    $variables['media'] = str_replace('?feature=oembed', '?feature=oembed&pasta=rigatoni', (string) $variables['media']);
+  }
+}
+
 /**
  * Implements hook_oembed_resource_url_alter().
  */

core/modules/media/tests/src/Kernel/OEmbedIframeControllerTest.php

@@ -2,6 +2,10 @@
 
 namespace Drupal\Tests\media\Kernel;
 
+use Drupal\media\Controller\OEmbedIframeController;
+use Drupal\media\OEmbed\Provider;
+use Drupal\media\OEmbed\Resource;
+use Prophecy\Argument;
 use Symfony\Component\HttpFoundation\Request;
 
 /**
@@ -11,6 +15,11 @@ use Symfony\Component\HttpFoundation\Request;
  */
 class OEmbedIframeControllerTest extends MediaKernelTestBase {
 
+  /**
+   * {@inheritdoc}
+   */
+  protected static $modules = ['media_test_oembed'];
+
   /**
    * Data provider for testBadHashParameter().
    *
@@ -54,4 +63,43 @@ class OEmbedIframeControllerTest extends MediaKernelTestBase {
     $controller($request);
   }
 
+  /**
+   * Tests that resources can be used in media_oembed_iframe preprocess.
+   *
+   * @see media_test_oembed_preprocess_media_oembed_iframe()
+   *
+   * @covers ::render
+   */
+  public function testResourcePassedToPreprocess() {
+    $hash = $this->container->get('media.oembed.iframe_url_helper')
+      ->getHash('', 0, 0);
+
+    $url_resolver = $this->prophesize('\Drupal\media\OEmbed\UrlResolverInterface');
+    $resource_fetcher = $this->prophesize('\Drupal\media\OEmbed\ResourceFetcherInterface');
+
+    $provider = new Provider('YouTube', 'https://youtube.com', [
+      [
+        'url' => 'https://youtube.com/foo',
+      ],
+    ]);
+    $resource = Resource::rich('<iframe src="https://youtube.com/watch?feature=oembed"></iframe>', 320, 240, $provider);
+
+    $resource_fetcher->fetchResource(Argument::cetera())->willReturn($resource);
+
+    $this->container->set('media.oembed.url_resolver', $url_resolver->reveal());
+    $this->container->set('media.oembed.resource_fetcher', $resource_fetcher->reveal());
+
+    $request = new Request([
+      'url' => '',
+      'hash' => $hash,
+    ]);
+    $content = OEmbedIframeController::create($this->container)
+      ->render($request)
+      ->getContent();
+
+    // This query parameter is added by
+    // media_test_oembed_preprocess_media_oembed_iframe() for YouTube videos.
+    $this->assertStringContainsString('&pasta=rigatoni', $content);
+  }
+
 }