class WidgetSubmit in Inline Entity Form 8

Performs widget submission.

Widgets don't save changed entities, nor do they delete removed entities. Instead, they flag them so that changes are only applied when the main form is submitted.

Hierarchy

• class \Drupal\inline_entity_form\WidgetSubmit

1 file declares its use of WidgetSubmit

inline_entity_form.module in ./inline_entity_form.module

Provides a widget for inline management (creation, modification, removal) of referenced entities. The primary use case is the parent -> children one (for example, order -> line items), where the child entities are never managed outside the…

File

src/WidgetSubmit.php, line 15

Namespace

Drupal\inline_entity_form

class WidgetSubmit {

  /**
   * Attaches the widget submit functionality to the given form.
   *
   * @param array $form
   *   The form.
   * @param \Drupal\Core\Form\FormStateInterface $form_state
   *   The form state.
   */
  public static function attach(&$form, FormStateInterface $form_state) {

    // $form['#ief_element_submit'] runs after the #ief_element_submit
    // callbacks of all subelements, which means that doSubmit() has
    // access to the final IEF $form_state.
    $form['#ief_element_submit'][] = [
      get_called_class(),
      'doSubmit',
    ];
  }

  /**
   * Submits the widget elements, saving and deleted entities where needed.
   *
   * @param array $form
   *   The form.
   * @param \Drupal\Core\Form\FormStateInterface $form_state
   *   The form state.
   */
  public static function doSubmit(array $form, FormStateInterface $form_state) {
    $referenceUpgrader = new ReferenceUpgrader();
    $widget_states =& $form_state
      ->get('inline_entity_form');

    // Widget states can be in an arbitrary order depending on user's form
    // interaction. We sort them lexicographically in reverse order to get inner
    // forms before outer forms, to ensure inside-out saving of entities.
    // @see \Drupal\inline_entity_form\Plugin\Field\FieldWidget\InlineEntityFormBase::makeIefId
    krsort($widget_states, SORT_STRING);
    foreach ($widget_states as $ief_id => &$widget_state) {
      $widget_state += [
        'entities' => [],
        'delete' => [],
      ];
      foreach ($widget_state['entities'] as $delta => &$entity_item) {
        if (!empty($entity_item['entity']) && !empty($entity_item['needs_save'])) {

          /** @var \Drupal\Core\Entity\ContentEntityInterface $entity */
          $entity = $entity_item['entity'];
          $handler = InlineEntityForm::getInlineFormHandler($entity
            ->getEntityTypeId());
          $referenceUpgrader
            ->upgradeEntityReferences($entity);
          $handler
            ->save($entity);
          $referenceUpgrader
            ->registerEntity($entity);
          $entity_item['needs_save'] = FALSE;
        }
      }

      /** @var \Drupal\Core\Entity\ContentEntityInterface $entities */
      foreach ($widget_state['delete'] as $entity) {
        $entity
          ->delete();
      }
      unset($widget_state['delete']);
    }
  }

}

Members

Name	Modifiers	Type	Description	Overrides
WidgetSubmit::attach	public static	function	Attaches the widget submit functionality to the given form.
WidgetSubmit::doSubmit	public static	function	Submits the widget elements, saving and deleted entities where needed.