Purge parent collections in inheritance cases

src/Symfony/Doctrine/EventListener/PurgeHttpCacheListener.php

@@ -80,6 +80,7 @@ public function onFlush(OnFlushEventArgs $eventArgs): void
 
         foreach ($uow->getScheduledEntityInsertions() as $entity) {
             $this->gatherResourceAndItemTags($entity, false);
+            $this->gatherParentResourceTags($em, $entity);
             $this->gatherRelationTags($em, $entity);
         }
 
@@ -122,6 +123,25 @@ private function gatherResourceAndItemTags(object $entity, bool $purgeItem): voi
         }
     }
 
+    private function gatherParentResourceTags(EntityManagerInterface $em, object $entity): void
+    {
+        $classMetadata = $em->getClassMetadata($entity::class);
+
+        if ($classMetadata->isInheritanceTypeNone()) {
+            return;
+        }
+
+        foreach ($classMetadata->parentClasses as $parentClass) {
+            if ($this->resourceClassResolver->isResourceClass($parentClass)) {
+                try {
+                    $iri = $this->iriConverter->getIriFromResource($parentClass, UrlGeneratorInterface::ABS_PATH, new GetCollection());
+                    $this->tags[$iri] = $iri;
+                } catch (OperationNotFoundException|InvalidArgumentException) {
+                }
+            }
+        }
+    }
+
     private function gatherRelationTags(EntityManagerInterface $em, object $entity): void
     {
         $associationMappings = $em->getClassMetadata($entity::class)->getAssociationMappings();