/**
* {@inheritdoc}
*/
public function extractFormValues(FieldItemListInterface $items, array $form, FormStateInterface $form_state)
{
$field_name = $this->fieldDefinition->getName();
// Extract the values from $form_state->getValues().
$path = array_merge($form['#parents'], array($field_name));
$key_exists = NULL;
// Convert the field value into expected array format.
$values = $form_state->getValues();
$value = NestedArray::getValue($values, $path, $key_exists);
if (empty($value)) {
parent::extractFormValues($items, $form, $form_state);
return;
}
if (!isset($value[0]['target_id'])) {
NestedArray::setValue($values, $path, [['target_id' => reset($value)]]);
$form_state->setValues($values);
}
parent::extractFormValues($items, $form, $form_state);
}
/**
* {@inheritdoc}
*/
public static function isApplicable(FieldDefinitionInterface $field_definition)
{
return parent::isApplicable($field_definition) && $field_definition->getName() === 'moderation_state';
}
