FieldItemBase::storageSettingsForm
public function FieldItemBase::storageSettingsForm
public FieldItemBase::storageSettingsForm(array &$form, FormStateInterface $form_state, $has_data)
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