public function EntityReferenceIdExportFormatter::viewElements in REST Views 2.0.x

Builds a renderable array for a field value.

Parameters

\Drupal\Core\Field\FieldItemListInterface $items: The field values to be rendered.

string $langcode: The language that should be used to render the field.

Return value

array A renderable array for $items, as an array of child elements keyed by consecutive numeric indexes starting from 0.

Overrides EntityReferenceIdFormatter::viewElements

File

src/Plugin/Field/FieldFormatter/EntityReferenceIdExportFormatter.php, line 34

Class

EntityReferenceIdExportFormatter

Plugin implementation of the 'entity reference ID' formatter.

Namespace

Drupal\rest_views\Plugin\Field\FieldFormatter

Code

public function viewElements(FieldItemListInterface $items, $langcode) : array {
  $elements = parent::viewElements($items, $langcode);

  // Transform the plaintext elements into serialized data.
  foreach ($elements as $delta => $element) {

    // Cast the ID to an integer if it is a string containing only digits.
    $id = ctype_digit($element['#plain_text']) ? (int) $element['#plain_text'] : $element['#plain_text'];
    $elements[$delta]['#type'] = 'data';
    $elements[$delta]['#data'] = SerializedData::create($id);
    unset($elements[$delta]['#plain_text']);
  }
  return $elements;
}