public function PatternWrapperEntityReferenceFormatter::viewElements in UI Patterns Field Formatters 8

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 EntityReferenceEntityFormatter::viewElements

File

src/Plugin/Field/FieldFormatter/PatternWrapperEntityReferenceFormatter.php, line 178

Class

PatternWrapperEntityReferenceFormatter

Plugin implementation of 'pattern_wrapper_entity_reference_formatter'.

Namespace

Drupal\ui_patterns_field_formatters\Plugin\Field\FieldFormatter

Code

public function viewElements(FieldItemListInterface $items, $langcode) {
  $elements = parent::viewElements($items, $langcode);
  $pattern = $this
    ->getSetting('pattern');

  // Set pattern fields.
  $fields = [];
  $mapping = $this
    ->getSetting('pattern_mapping');
  $mapping = $mapping[$pattern]['settings'];
  foreach ($mapping as $source => $field) {
    if ($field['destination'] === '_hidden') {
      continue;
    }

    // Get rid of the source tag.
    $source = explode(":", $source)[1];
    if ($source === 'items') {
      $fields[$field['destination']][] = $elements;
    }
    if ($source === 'label') {
      $fields[$field['destination']][] = $items
        ->getFieldDefinition()
        ->getLabel();
    }
  }

  // Set pattern render array.
  $build = [
    '#type' => 'pattern',
    '#id' => $this
      ->getSetting('pattern'),
    '#fields' => $fields,
    '#multiple_sources' => TRUE,
  ];

  // Set the variant.
  $pattern_variant = $this
    ->getCurrentVariant($pattern);
  if (isset($pattern_variant)) {
    $build['#variant'] = $pattern_variant;
  }

  // Set the settings.
  $settings = $this
    ->getSetting('pattern_settings');
  $pattern_settings = !empty($settings) && isset($settings[$pattern]) ? $settings[$pattern] : NULL;
  if (isset($pattern_settings)) {
    $build['#settings'] = $pattern_settings;
  }

  // Set pattern context.
  $entity = $items
    ->getEntity();
  $build['#context'] = [
    'type' => 'field_formatter',
    'entity' => $entity,
  ];
  return $build;
}