function FieldStorageConfigEditForm::form

Gets the actual form array to be built.

Overrides EntityForm::form

File

core/modules/field_ui/src/Form/FieldStorageConfigEditForm.php, line 66

Class

FieldStorageConfigEditForm

Provides a form for the "field storage" edit page.

Namespace

Code

public function form(array $form, FormStateInterface $form_state) {
  $form = parent::form($form, $form_state);
  $field_label = $form_state->get('field_config')
    ->label();
  $form['#title'] = $field_label;
  $form['#prefix'] = '<p>' . $this->t('These settings apply to the %field field everywhere it is used. These settings impact the way that data is stored in the database and cannot be changed once data has been created.', [
    '%field' => $field_label,
  ]) . '</p>';
  // See if data already exists for this field.
  // If so, prevent changes to the field settings.
  if ($this->entity
    ->hasData()) {
    $form['#prefix'] = '<div class="messages messages--error">' . $this->t('There is data for this field in the database. The field settings can no longer be changed.') . '</div>' . $form['#prefix'];
  }
  // Add settings provided by the field module. The field module is
  // responsible for not returning settings that cannot be changed if
  // the field already has data.
  $form['settings'] = [
    '#weight' => -10,
    '#tree' => TRUE,
  ];
  // Create an arbitrary entity object, so that we can have an instantiated
  // FieldItem.
  $ids = (object) [
    'entity_type' => $form_state->get('entity_type_id'),
    'bundle' => $form_state->get('bundle'),
    'entity_id' => NULL,
  ];
  $entity = _field_create_entity_from_ids($ids);
  $items = $entity->get($this->entity
    ->getName());
  $item = $items->first() ?: $items->appendItem();
  $form['settings'] += $item->storageSettingsForm($form, $form_state, $this->entity
    ->hasData());
  // Add the cardinality sub-form.
  $form['cardinality_container'] = $this->getCardinalityForm();
  return $form;
}