Roderik Muit · Roderik Muit
--- a/src/Plugin/CustomElementsFieldFormatter/EntityReferenceCeFieldFormatter.php
+++ b/src/Plugin/CustomElementsFieldFormatter/EntityReferenceCeFieldFormatter.php
   */
  public function build(FieldItemListInterface $items, CustomElement $custom_element, $langcode = NULL) {
    if ($items instanceof EntityReferenceFieldItemListInterface) {
-      $nested_elements = [];
-      foreach ($items->referencedEntities() as $entity) {
-        $nested_elements[] = $this->ceGenerator->generate($entity, $this->configuration['mode'], $langcode);
-      }
-      if ($this->isSlot()) {
-        $custom_element->setSlotFromNestedElements($this->getName(), $nested_elements);
--- a/src/Plugin/CustomElementsFieldFormatter/VideoEmbedCeFieldFormatter.php 0 → 100644
+++ b/src/Plugin/CustomElementsFieldFormatter/VideoEmbedCeFieldFormatter.php 0 → 100644
+<?php
+
+namespace Drupal\custom_elements\Plugin\CustomElementsFieldFormatter;
+
+use Drupal\Core\Field\FieldDefinitionInterface;
+use Drupal\Core\Field\FieldItemListInterface;
+use Drupal\Core\Form\FormStateInterface;
+use Drupal\custom_elements\CustomElement;
+use Drupal\custom_elements\CustomElementsFieldFormatterBase;
+use Symfony\Component\DependencyInjection\ContainerInterface;
+
+/**
+ * Implementation of the 'video_embed' custom element formatter plugin.
+ *
+ * Sets embed URL and thumbnail from the applicable video provider.
--- a/tests/modules/custom_elements_test_paragraphs/config/install/field.field.media.image.field_media_image.yml 0 → 100644
+++ b/tests/modules/custom_elements_test_paragraphs/config/install/field.field.media.image.field_media_image.yml 0 → 100644
+uuid: ef603016-2b8e-4ffe-a201-fb0f38b7b748
--- a/tests/src/Functional/CustomElementsRenderMarkupTest.php
+++ b/tests/src/Functional/CustomElementsRenderMarkupTest.php
    return preg_replace("/> +</", "><", $string);
  }

-  /**
-   * Tests paragraphs.
-   */
-  public function testParagraphs() {
-    // We test all paragraph types from a single test method so the setup()
-    // routine is only run once for all of them - saves time.
-    $this->doTestTwitterParagraph();
-    $this->doTestVideoParagraph();
-    $this->doTestImageParagraph();
-    $this->doTestGalleryParagraph();
--- a/tests/modules/custom_elements_test_paragraphs/config/install/custom_elements.entity_ce_display.media.image.default.yml 0 → 100644
+++ b/tests/modules/custom_elements_test_paragraphs/config/install/custom_elements.entity_ce_display.media.image.default.yml 0 → 100644
+uuid: dadd4eca-7032-44fa-9d3a-18f605a44231
--- a/modules/custom_elements_thunder/src/Processor/ParagraphImageProcessor.php deleted 100644 → 0
+++ b/modules/custom_elements_thunder/src/Processor/ParagraphImageProcessor.php deleted 100644 → 0
-<?php
-
-namespace Drupal\custom_elements_thunder\Processor;
--- a/tests/modules/custom_elements_test_paragraphs/config/install/custom_elements.entity_ce_display.media.image.default.yml 0 → 100644
+++ b/tests/modules/custom_elements_test_paragraphs/config/install/custom_elements.entity_ce_display.media.image.default.yml 0 → 100644
+uuid: dadd4eca-7032-44fa-9d3a-18f605a44231
+langcode: en-gb
--- a/src/Plugin/CustomElementsFieldFormatter/EntityReferenceCeFieldFormatter.php
+++ b/src/Plugin/CustomElementsFieldFormatter/EntityReferenceCeFieldFormatter.php
   */
  public function build(FieldItemListInterface $items, CustomElement $custom_element, $langcode = NULL) {
    if ($items instanceof EntityReferenceFieldItemListInterface) {
-      $nested_elements = [];
-      foreach ($items->referencedEntities() as $entity) {
-        $nested_elements[] = $this->ceGenerator->generate($entity, $this->configuration['mode'], $langcode);
-      }
-      if ($this->isSlot()) {
-        $custom_element->setSlotFromNestedElements($this->getName(), $nested_elements);
+      $entities = $items->referencedEntities();
+      // Ignore 'flatten' for multi-value fields.
+      if (empty($this->configuration['settings']['flatten'])
--- a/src/Plugin/CustomElementsFieldFormatter/EntityReferenceCeFieldFormatter.php
+++ b/src/Plugin/CustomElementsFieldFormatter/EntityReferenceCeFieldFormatter.php
-      foreach ($items->referencedEntities() as $entity) {
+      foreach ($entities as $entity) {
        $nested_elements[] = $this->ceGenerator->generate($entity, $this->configuration['mode'], $langcode);
      }
-      if ($this->isSlot()) {
+
+      if ($this->isSlot() && empty($this->configuration['flatten'])) {
        $custom_element->setSlotFromNestedElements($this->getName(), $nested_elements);
      }
      else {
        $normalizer = new CustomElementNormalizer();
        $context = ['cache_metadata' => new BubbleableMetadata()];
-        if ($this->getFieldDefinition()->getFieldStorageDefinition()->getCardinality() == 1) {
+        if ($this->getFieldDefinition()->getFieldStorageDefinition()->getCardinality() == 1
+            || !empty($this->configuration['flatten'])) {
          $value = $normalizer->normalize($nested_elements[0], NULL, $context);