function StringFormatter::viewElements

Overrides FormatterInterface::viewElements

File

core/lib/Drupal/Core/Field/Plugin/Field/FieldFormatter/StringFormatter.php, line 124

Class

StringFormatter

Plugin implementation of the 'string' formatter.

Namespace

Code

public function viewElements(FieldItemListInterface $items, $langcode) {
    $elements = [];
    $entity = $items->getEntity();
    $entity_type = $entity->getEntityType();
    $render_as_link = FALSE;
    if ($this->getSetting('link_to_entity') && !$entity->isNew() && $entity_type->hasLinkTemplate('canonical')) {
        $url = $this->getEntityUrl($entity);
        $access = $url->access(return_as_object: TRUE);
        (new CacheableMetadata())->addCacheableDependency($access)
            ->applyTo($elements);
        $render_as_link = $access->isAllowed();
    }
    foreach ($items as $delta => $item) {
        if ($render_as_link) {
            assert(isset($url));
            $elements[$delta] = [
                '#type' => 'link',
                '#title' => $this->viewValue($item),
                '#url' => $url,
            ];
        }
        else {
            $elements[$delta] = $this->viewValue($item);
        }
    }
    return $elements;
}