Issue #3347920: drupal_image() should include the cache tags for the image style.

src/View/ImageViewBuilder.php

@@ -3,7 +3,9 @@
 namespace Drupal\twig_tweak\View;
 
 use Drupal\Core\Access\AccessResult;
+use Drupal\Core\Cache\Cache;
 use Drupal\Core\Cache\CacheableMetadata;
+use Drupal\Core\Entity\EntityTypeManagerInterface;
 use Drupal\file\FileInterface;
 
 /**
@@ -11,6 +13,34 @@ use Drupal\file\FileInterface;
  */
 class ImageViewBuilder {
 
+  /**
+   * The responsive image style entity storage.
+   *
+   * @var \Drupal\Core\Entity\EntityStorageInterface
+   */
+  protected $responsiveImageStyleStorage;
+
+  /**
+   * The image style entity storage.
+   *
+   * @var \Drupal\Core\Entity\EntityStorageInterface
+   */
+  protected $imageStyleStorage;
+
+  /**
+   * Constructs an ImageViewBuilder object.
+   *
+   * @param \Drupal\Core\Entity\EntityTypeManagerInterface $entity_type_manager
+   *   The entity type manager.
+   *
+   * @throws \Drupal\Component\Plugin\Exception\InvalidPluginDefinitionException
+   * @throws \Drupal\Component\Plugin\Exception\PluginNotFoundException
+   */
+  public function __construct(EntityTypeManagerInterface $entity_type_manager) {
+    $this->responsiveImageStyleStorage = $entity_type_manager->getStorage('responsive_image_style');
+    $this->imageStyleStorage = $entity_type_manager->getStorage('image_style');
+  }
+
   /**
    * Builds an image.
    *
@@ -33,6 +63,8 @@ class ImageViewBuilder {
     $access = $check_access ? $file->access('view', NULL, TRUE) : AccessResult::allowed();
 
     $build = [];
+    $image_styles_to_load = [];
+    $cache_tags = [];
     if ($access->isAllowed()) {
       $build['#uri'] = $file->getFileUri();
       $build['#attributes'] = $attributes;
@@ -40,10 +72,16 @@ class ImageViewBuilder {
         if ($responsive) {
           $build['#type'] = 'responsive_image';
           $build['#responsive_image_style_id'] = $style;
+
+          /** @var \Drupal\responsive_image\ResponsiveImageStyleInterface $responsive_image_style */
+          $responsive_image_style = $this->responsiveImageStyleStorage->load($style);
+          $cache_tags = Cache::mergeTags($cache_tags, $responsive_image_style->getCacheTags());
+          $image_styles_to_load = $responsive_image_style->getImageStyleIds();
         }
         else {
           $build['#theme'] = 'image_style';
           $build['#style_name'] = $style;
+          $image_styles_to_load[] = $style;
         }
       }
       else {
@@ -51,9 +89,17 @@ class ImageViewBuilder {
       }
     }
 
+    if ($image_styles_to_load) {
+      $image_styles = $this->imageStyleStorage->loadMultiple($image_styles_to_load);
+      foreach ($image_styles as $image_style) {
+        $cache_tags = Cache::mergeTags($cache_tags, $image_style->getCacheTags());
+      }
+    }
+
     CacheableMetadata::createFromRenderArray($build)
       ->addCacheableDependency($access)
       ->addCacheableDependency($file)
+      ->addCacheTags($cache_tags)
       ->applyTo($build);
 
     return $build;

twig_tweak.services.yml

@@ -31,6 +31,7 @@ services:
 
   twig_tweak.image_view_builder:
     class: Drupal\twig_tweak\View\ImageViewBuilder
+    arguments: ['@entity_type.manager']
 
   twig_tweak.url_extractor:
     class: Drupal\twig_tweak\UrlExtractor