Draft: Quickfix to make Quick Node Clone compatible with layout_paragraphs.

Closes #3218222

src/Entity/QuickNodeCloneEntityFormBuilder.php

@@ -221,8 +221,23 @@ class QuickNodeCloneEntityFormBuilder extends EntityFormBuilder {
       $field_name = $field_storage_definition->getName();
       if (isset($field_settings['target_type']) && $field_settings['target_type'] == "paragraph") {
         if (!$node->get($field_name)->isEmpty()) {
+          // TODO: Layout Paragraphs integration:
+          // TODO: See https://www.drupal.org/project/layout_paragraphs/issues/3218226#comment-14129846
+          // TODO: See https://www.drupal.org/project/quick_node_clone/issues/3218222
+          // TODO: All the Steps 1-6 don't belong here in a perfect world but belong to layout_paragraphs
+          // 1. Create helper array to store old / new uuids from all paragraphs
+          // to update parent_uuids from all children later here:
+          $uuidOldNewMap = [];
           foreach ($node->get($field_name) as $value) {
             if ($value->entity) {
+              // 2. Store the old uuid of this paragraph:
+              $oldUuid = $value->entity->uuid();
+              $value->entity = $value->entity->createDuplicate();
+              // 3. Store the new uuid of this paragraph:
+              $newUuid = $value->entity->uuid();
+              // 4. Save old => new uuid relations in array to replace the old one later:
+              $uuidOldNewMap[$oldUuid] = $newUuid;
+
               $value->entity = $value->entity->createDuplicate();
               foreach ($value->entity->getFieldDefinitions() as $field_definition) {
                 $field_storage_definition = $field_definition->getFieldStorageDefinition();
@@ -235,9 +250,26 @@ class QuickNodeCloneEntityFormBuilder extends EntityFormBuilder {
                 }
 
                 $this->moduleHandler->alter('cloned_node_paragraph_field', $value->entity, $pfield_name, $pfield_settings);
+
+                if (isset($pfield_settings['target_type']) && $pfield_settings['target_type'] == "paragraph" && !empty($value->entity->{$pfield_name})) {
+                  // Do the same for any nested paragraphs.
+                  self::cloneParagraphs($value->entity);
+                }
               }
             }
           }
+          // 5. Update children paragraphs parent_uuid's to the new uuids from
+          // the cloned paragraphs:
+          $behavior_settings = $value->entity->getAllBehaviorSettings();
+          if(isset($behavior_settings['layout_paragraphs']) && !empty($behavior_settings['layout_paragraphs']['parent_uuid'])){
+            $oldParentUuid = $behavior_settings['layout_paragraphs']['parent_uuid'];
+            if(!empty($uuidOldNewMap[$oldParentUuid])){
+              $newParentUuid = $uuidOldNewMap[$oldParentUuid];
+              $behavior_settings['layout_paragraphs']['parent_uuid'] = $newParentUuid;
+              // kint([$oldParentUuid, $newParentUuid]);
+              $value->entity->setBehaviorSettings('layout_paragraphs', $behavior_settings['layout_paragraphs']);
+            }
+          }
         }
       }
     }