protected function EntityReferenceBrowserWidget::formElementEntities in Entity Browser 8

Same name and namespace in other branches

1. 8.2 src/Plugin/Field/FieldWidget/EntityReferenceBrowserWidget.php \Drupal\entity_browser\Plugin\Field\FieldWidget\EntityReferenceBrowserWidget::formElementEntities()

Determines the entities used for the form element.

Parameters

\Drupal\Core\Field\FieldItemListInterface $items: The field item to extract the entities from.

array $element: The form element.

\Drupal\Core\Form\FormStateInterface $form_state: The form state.

Return value

\Drupal\Core\Entity\EntityInterface[] The list of entities for the form element.

1 call to EntityReferenceBrowserWidget::formElementEntities()

EntityReferenceBrowserWidget::formElement in src/Plugin/Field/FieldWidget/EntityReferenceBrowserWidget.php

Returns the form for a single field widget.

File

src/Plugin/Field/FieldWidget/EntityReferenceBrowserWidget.php, line 794

Class

EntityReferenceBrowserWidget

Plugin implementation of the 'entity_reference' widget for entity browser.

Namespace

Drupal\entity_browser\Plugin\Field\FieldWidget

Code

protected function formElementEntities(FieldItemListInterface $items, array $element, FormStateInterface $form_state) {
  $entities = [];
  $entity_type = $this->fieldDefinition
    ->getFieldStorageDefinition()
    ->getSetting('target_type');
  $entity_storage = $this->entityTypeManager
    ->getStorage($entity_type);

  // Find IDs from target_id element (it stores selected entities in form).
  // This was added to help solve a really edge casey bug in IEF.
  if (($target_id_entities = $this
    ->getEntitiesByTargetId($element, $form_state)) !== FALSE) {
    return $target_id_entities;
  }

  // Determine if we're submitting and if submit came from this widget.
  $is_relevant_submit = FALSE;
  if ($trigger = $form_state
    ->getTriggeringElement()) {

    // Can be triggered by hidden target_id element or "Remove" button.
    $last_parent = end($trigger['#parents']);
    if (in_array($last_parent, [
      'target_id',
      'remove_button',
      'replace_button',
    ])) {
      $is_relevant_submit = TRUE;

      // In case there are more instances of this widget on the same page we
      // need to check if submit came from this instance.
      $field_name_key = end($trigger['#parents']) === 'target_id' ? 2 : static::$deleteDepth + 1;
      $field_name_key = count($trigger['#parents']) - $field_name_key;
      $is_relevant_submit &= $trigger['#parents'][$field_name_key] === $this->fieldDefinition
        ->getName() && array_slice($trigger['#parents'], 0, count($element['#field_parents'])) == $element['#field_parents'];
    }
  }
  if ($is_relevant_submit) {

    // Submit was triggered by hidden "target_id" element when entities were
    // added via entity browser.
    if (!empty($trigger['#ajax']['event']) && $trigger['#ajax']['event'] == 'entity_browser_value_updated') {
      $parents = $trigger['#parents'];
    }
    elseif ($trigger['#type'] == 'submit' && strpos($trigger['#name'], $this->fieldDefinition
      ->getName() . '_remove_') === 0) {
      $parents = array_merge(array_slice($trigger['#parents'], 0, -static::$deleteDepth), [
        'target_id',
      ]);
    }
    if (isset($parents) && ($value = $form_state
      ->getValue($parents))) {
      $entities = EntityBrowserElement::processEntityIds($value);
      return $entities;
    }
    return $entities;
  }
  elseif ($form_state
    ->has([
    'entity_browser_widget',
    $this
      ->getFormStateKey($items),
  ])) {
    $stored_ids = $form_state
      ->get([
      'entity_browser_widget',
      $this
        ->getFormStateKey($items),
    ]);
    $indexed_entities = $entity_storage
      ->loadMultiple($stored_ids);

    // Selection can contain same entity multiple times. Since loadMultiple()
    // returns unique list of entities, it's necessary to recreate list of
    // entities in order to preserve selection of duplicated entities.
    foreach ($stored_ids as $entity_id) {
      if (isset($indexed_entities[$entity_id])) {
        $entities[] = $indexed_entities[$entity_id];
      }
    }
    return $entities;
  }
  else {
    foreach ($items as $item) {
      if (isset($item->target_id)) {
        $entity = $entity_storage
          ->load($item->target_id);
        if (!empty($entity)) {
          $entities[] = $entity;
        }
      }
    }
    return $entities;
  }
}