public function LibraryItemFieldWidget::extractFormValues in Library 8

Extracts field values from submitted form values.

Parameters

\Drupal\Core\Field\FieldItemListInterface $items: The field values. This parameter is altered by reference to receive the incoming form values.

array $form: The form structure where field elements are attached to. This might be a full form structure, or a sub-element of a larger form.

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

Overrides WidgetBase::extractFormValues

File

src/Plugin/Field/FieldWidget/LibraryItemFieldWidget.php, line 221

Class

LibraryItemFieldWidget

Plugin implementation of the 'library_item_field_widget' widget.

Namespace

Drupal\library\Plugin\Field\FieldWidget

Code

public function extractFormValues(FieldItemListInterface $items, array $form, FormStateInterface $form_state) {
  if ($this
    ->isDefaultValueWidget($form_state)) {
    $items
      ->filterEmptyItems();
    return;
  }
  $field_name = $this->fieldDefinition
    ->getName();
  $submittedValues = $form_state
    ->getValue($field_name);
  $sortedEntityReferences = [];
  foreach ($items as $delta => $value) {
    $formElement = NestedArray::getValue($form, [
      $field_name,
      'widget',
      $delta,
    ]);

    /** @var \Drupal\Core\Entity\EntityInterface $entity */
    if (isset($formElement['library']['#entity'], $formElement['library']['#entity']['#value'])) {
      $entity = $formElement['library']['#entity']['#value'];
      $sortedEntityReferences[$submittedValues[$delta]['_weight']] = [
        'target_id' => $entity
          ->id(),
        'entity' => $entity,
      ];
    }
  }
  ksort($sortedEntityReferences);
  $sortedEntityReferences = array_values($sortedEntityReferences);
  $items
    ->setValue($sortedEntityReferences);
  $items
    ->filterEmptyItems();
  $widget_state = [
    'instance' => $this->fieldDefinition,
    'delete' => [],
    'entities' => [],
  ];
  foreach ($items as $delta => $value) {
    $widget_state['entities'][$delta] = [
      'entity' => $value->entity,
      'needs_save' => FALSE,
    ];
  }
  $form_state
    ->set('library_item', $widget_state);
}