Issue #3476129 by k.wiktorowicz, a.dmitriiev: Layout Builder – Error when...

frontend_editing.module

@@ -794,6 +794,96 @@ function frontend_editing_modules_installed($modules, $is_syncing) {
   }
 }
 
+/**
+ * Implements hook_preprocess_HOOK().
+ */
+function frontend_editing_preprocess_block(&$variables) {
+  // Preprocess layout builder block for entity reference fields.
+  if ($variables['base_plugin_id'] == 'field_block') {
+    // Check frontend editing settings.
+    $config = \Drupal::configFactory()->get('frontend_editing.settings');
+    // Get supported entity types for frontend editing.
+    $supported_entity_types = $config->get('entity_types');
+    // Add a wrapper around entity reference fields, so that they could be updated
+    // with ajax when one of the elements is updated.
+    $allowed_field_types = [
+      'entity_reference_revisions',
+      'entity_reference',
+    ];
+    foreach ($variables['content'] as $delta => $entity_reference_item) {
+      if (!isset($entity_reference_item['#theme'])) {
+        continue;
+      }
+      if ($entity_reference_item['#theme'] != 'field') {
+        continue;
+      }
+      if (in_array($entity_reference_item['#field_type'], $allowed_field_types)) {
+        $settings = $entity_reference_item['#items']->getFieldDefinition()->getSettings();
+        // Only add the wrapper for entity reference fields that are targeting the
+        // supported for frontend editing entity types.
+        if (!in_array($settings['target_type'], array_keys($supported_entity_types), TRUE)) {
+          continue;
+        }
+        if (!empty($settings['handler_settings']['target_bundles']) && empty(array_intersect($settings['handler_settings']['target_bundles'], $supported_entity_types[$settings['target_type']]))) {
+          continue;
+        }
+        // If ajax content update is not allowed, no need to add field wrapper.
+        if (!$config->get('ajax_content_update')) {
+          continue;
+        }
+        // Check if the field is not excluded from frontend editing ajax content
+        // update.
+        if (!frontend_editing_add_field_wrapper($entity_reference_item['#entity_type'], $entity_reference_item['#bundle'], $entity_reference_item['#field_name'])) {
+          continue;
+        }
+        // Selector should contain the entity type, the entity id and the field
+        // name that it belongs too.
+        $parent_view_mode = $entity_reference_item['#view_mode'] == '_custom' ? 'default' : $entity_reference_item['#view_mode'];
+        $selector = $entity_reference_item['#entity_type'] . '--' . $entity_reference_item['#object']->id() . '--' . $entity_reference_item['#field_name'] . '--' . $parent_view_mode;
+        // Because it is possible to remove wrappers in the field template and
+        // there is no reliable way to know whether the field wrapper attributes
+        // are printed, force add theme wrappers.
+        $variables['content']['#theme_wrappers'] = [
+          'container' => [
+            '#attributes' => [
+              'data-frontend-editing' => $selector,
+              'class' => [
+                'frontend-editing-field-wrapper',
+              ],
+            ],
+          ],
+        ];
+        // Add parent field view mode to render array of children.
+        foreach (Element::getVisibleChildren($entity_reference_item) as $field_delta) {
+          $item = $variables['content'][$delta][$field_delta];
+          if (!empty($item['#pre_render'])) {
+            $variables['content'][$delta][$field_delta]['#parent_field_view_mode'] = $variables['content'][$delta]['#view_mode'];
+          }
+        }
+        $variables['content']['frontend_editing'][$entity_reference_item['#field_name'] . '_update_content'] = [
+          '#type' => 'link',
+          '#title' => t('Reload content for this field'),
+          '#url' => Url::fromRoute('frontend_editing.update_content', [
+            'entity_id' => $entity_reference_item['#object']->id(),
+            'entity_type_id' => $entity_reference_item['#entity_type'],
+            'field_name' => $entity_reference_item['#field_name'],
+            'view_mode' => $parent_view_mode,
+          ]),
+          '#attributes' => [
+            'title' => t('Reload content for this field'),
+            'class' => [
+              'use-ajax',
+              'frontend-editing-update-content',
+              'visually-hidden',
+            ],
+            'data-fe-update-content' => $selector,
+          ],
+        ];
+      }
+    }
+  }
+}
+
 /**
  * Implements hook_preprocess_page().
  */

src/Controller/FrontendEditingController.php

@@ -445,7 +445,43 @@ class FrontendEditingController extends ControllerBase {
     if ($message) {
       $response->addCommand(new MessageCommand($message, NULL, ['type' => 'error']));
     }
-    $updated_content = $paragraph->getParentEntity()->get($paragraph->get('parent_field_name')->value)->view($view_mode_id);
+    if ($view_mode_id == '_custom') {
+      $view_mode_id = 'default';
+    }
+    $field_formatter_settings = $view_mode_id;
+    $parent_entity = $paragraph->getParentEntity();
+    $parent_field_name = $paragraph->get('parent_field_name')->value;
+    // Load the view display. We need to know whether it uses layout builder.
+    $view_display_id = implode('.', [$parent_entity->getEntityTypeId(), $parent_entity->bundle(), $view_mode_id]);
+    /** @var \Drupal\Core\Entity\Display\EntityViewDisplayInterface $view_display */
+    $view_display = $this->entityTypeManager()->getStorage('entity_view_display')->load($view_display_id);
+    if ($view_display) {
+      $is_layout_builder = (bool) $view_display->getThirdPartySetting('layout_builder', 'enabled');
+      if ($is_layout_builder) {
+        $layout_builder_field_block_id_parts = [
+          'field_block',
+          $parent_entity->getEntityTypeId(),
+          $parent_entity->bundle(),
+          $parent_field_name,
+        ];
+        $layout_builder_field_block_id = implode(':', $layout_builder_field_block_id_parts);
+        $sections = $view_display->getThirdPartySetting('layout_builder', 'sections');
+        /** @var \Drupal\layout_builder\Section $section */
+        foreach ($sections as $section) {
+          foreach ($section->getComponents() as $component) {
+            if ($component->getPluginId() == $layout_builder_field_block_id) {
+              $configuration = $component->get('configuration');
+              if (!empty($configuration['formatter'])) {
+                $field_formatter_settings = $configuration['formatter'];
+                break 2;
+              }
+            }
+          }
+        }
+      }
+    }
+    $updated_content = $parent_entity->get($parent_field_name)
+      ->view($field_formatter_settings);
     foreach (Element::getVisibleChildren($updated_content) as $delta) {
       $item = $updated_content[$delta];
       if (!empty($item['#pre_render'])) {