public function EntityReferenceRevisionsItem::storageSettingsForm in Entity Reference Revisions 8

Returns a form for the storage-level settings.

Invoked from \Drupal\field_ui\Form\FieldStorageConfigEditForm to allow administrators to configure storage-level settings.

Field storage might reject settings changes that affect the field storage schema if the storage already has data. When the $has_data parameter is TRUE, the form should not allow changing the settings that take part in the schema() method. It is recommended to set #access to FALSE on the corresponding elements.

Parameters

array $form: The form where the settings form is being included in.

\Drupal\Core\Form\FormStateInterface $form_state: The form state of the (entire) configuration form.

bool $has_data: TRUE if the field already has data, FALSE if not.

Return value

array The form definition for the field settings.

Overrides EntityReferenceItem::storageSettingsForm

File

src/Plugin/Field/FieldType/EntityReferenceRevisionsItem.php, line 46

Class

EntityReferenceRevisionsItem

Defines the 'entity_reference_revisions' entity field type.

Namespace

Drupal\entity_reference_revisions\Plugin\Field\FieldType

Code

public function storageSettingsForm(array &$form, FormStateInterface $form_state, $has_data) {
  $entity_types = \Drupal::entityTypeManager()
    ->getDefinitions();
  $options = array();
  foreach ($entity_types as $entity_type) {
    if ($entity_type
      ->isRevisionable()) {
      $options[$entity_type
        ->id()] = $entity_type
        ->getLabel();
    }
  }
  $element['target_type'] = array(
    '#type' => 'select',
    '#title' => $this
      ->t('Type of item to reference'),
    '#options' => $options,
    '#default_value' => $this
      ->getSetting('target_type'),
    '#required' => TRUE,
    '#disabled' => $has_data,
    '#size' => 1,
  );
  return $element;
}