public function EntityReferenceFacetFormatterBase::settingsForm in Entity Reference Facet Link 8
Returns a form to configure settings for the formatter.
Invoked from \Drupal\field_ui\Form\EntityDisplayFormBase to allow administrators to configure the formatter. The field_ui module takes care of handling submitted form values.
Parameters
array $form: The form where the settings form is being included in.
\Drupal\Core\Form\FormStateInterface $form_state: The current state of the form.
Return value
array The form elements for the formatter settings.
Overrides FormatterBase::settingsForm
File
- src/Plugin/ Field/ FieldFormatter/ EntityReferenceFacetFormatterBase.php, line 108 
Class
Namespace
Drupal\entity_reference_facet_link\Plugin\Field\FieldFormatterCode
public function settingsForm(array $form, FormStateInterface $form_state) {
  /** @var \Drupal\facets\FacetInterface[] $facets */
  $facets = $this->facetStorage
    ->loadMultiple();
  $options = [];
  foreach ($facets as $facet) {
    // Add a facet to the options only if that facet is faceting this field.
    if ($facet
      ->getFieldIdentifier() == $this->fieldDefinition
      ->getName()) {
      $options[$facet
        ->id()] = $facet
        ->label();
    }
  }
  $elements['facet'] = [
    '#title' => $this
      ->t('Select the facet to which the labels should be linked.'),
    '#type' => 'select',
    '#default_value' => $this
      ->getSetting('facet'),
    '#options' => $options,
  ];
  return $elements;
}