/**
* {@inheritdoc}
*/
public function submitForm(array &$form, FormStateInterface $form_state)
{
// Save elements in the same order as defined in post rather than the form.
// This ensures parents are updated before their children, preventing orphans.
$user_input = $form_state->getUserInput();
if (isset($user_input['table'])) {
$order = array_flip(array_keys($user_input['table']));
$form['table'] = array_merge($order, $form['table']);
foreach (Element::children($form['table']) as $key) {
if ($form['table'][$key]['#item']) {
$row = $form['table'][$key];
$values = $form_state->getValue(array('table', $key));
// Update menu item if moved.
if ($row['pid']['#default_value'] != $values['pid'] || $row['weight']['#default_value'] != $values['weight']) {
$link = $this->bookManager->loadBookLink($values['nid'], FALSE);
$link['weight'] = $values['weight'];
$link['pid'] = $values['pid'];
$this->bookManager->saveBookLink($link, FALSE);
}
// Update the title if changed.
if ($row['title']['#default_value'] != $values['title']) {
$node = $this->nodeStorage->load($values['nid']);
$node->revision_log = $this->t('Title changed from %original to %current.', array('%original' => $node->label(), '%current' => $values['title']));
$node->title = $values['title'];
$node->book['link_title'] = $values['title'];
$node->setNewRevision();
$node->save();
$this->logger('content')->notice('book: updated %title.', array('%title' => $node->label(), 'link' => $node->link($this->t('View'))));
}
}
}
}
drupal_set_message($this->t('Updated book %title.', array('%title' => $form['#node']->label())));
}