function ListStringItem::storageSettingsForm

Overrides ListItemBase::storageSettingsForm

File

core/modules/options/src/Plugin/Field/FieldType/ListStringItem.php, line 89

Class

ListStringItem

Plugin implementation of the 'list_string' field type.

Namespace

Code

public function storageSettingsForm(array &$form, FormStateInterface $form_state, $has_data) {
    $element = parent::storageSettingsForm($form, $form_state, $has_data);
    // Improve user experience by using an automatically generated machine name.
    foreach (Element::children($element['allowed_values']['table']) as $delta => $row) {
        $element['allowed_values']['table'][$delta]['item']['key']['#type'] = 'machine_name';
        $element['allowed_values']['table'][$delta]['item']['key']['#machine_name'] = [
            'exists' => [
                static::class,
                'exists',
            ],
        ];
        $element['allowed_values']['table'][$delta]['item']['key']['#process'] = array_merge([
            [
                static::class,
                'processAllowedValuesKey',
            ],
        ], \Drupal::service('plugin.manager.element_info')->getInfoProperty('machine_name', '#process', []));
        // Remove #element_validate from the machine name so that any value can be
        // used as a key, while keeping the widget's behavior for generating
        // defaults the same.
        $element['allowed_values']['table'][$delta]['item']['key']['#element_validate'] = [];
    }
    return $element;
}