public function RadioactivityReferenceValue::viewElements in Radioactivity 4.0.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 FormatterInterface::viewElements

File

src/Plugin/Field/FieldFormatter/RadioactivityReferenceValue.php, line 58

Class

RadioactivityReferenceValue

Plugin implementation of the 'radioactivity_reference_value' formatter.

Namespace

Drupal\radioactivity\Plugin\Field\FieldFormatter

Code

public function viewElements(FieldItemListInterface $items, $langcode) {
  $elements = [];
  foreach ($this
    ->getEntitiesToView($items, $langcode) as $delta => $entity) {
    if (empty($entity)) {
      continue;
    }
    $elements[$delta] = [
      '#markup' => number_format($entity
        ->getEnergy(), $this
        ->getSetting('decimals')),
      '#cache' => [
        'tags' => $entity
          ->getCacheTags(),
      ],
    ];
  }
  return $elements;
}