/**
* JSON callback for subtree.
*
* @return \Symfony\Component\HttpFoundation\JsonResponse
* JSON object with list of terms.
*/
public function json()
{
$list = array();
$parent = $this->request->get('parent');
$term = $this->entityTypeManager()->getStorage('taxonomy_term')->load($parent);
if ($term) {
$taxonomy_vocabulary = $this->entityTypeManager()->getStorage('taxonomy_vocabulary')->load($term->getVocabularyId());
if ($taxonomy_vocabulary) {
$terms = TaxonomyManagerTree::loadTerms($taxonomy_vocabulary, $parent);
$list = TaxonomyManagerTree::getNestedListJSONArray($terms);
}
}
return new JsonResponse($list);
}
public static function processTree(&$element, FormStateInterface $form_state, &$complete_form)
{
$element['#tree'] = TRUE;
if (!empty($element['#vocabulary'])) {
$taxonomy_vocabulary = \Drupal::entityTypeManager()->getStorage('taxonomy_vocabulary')->load($element['#vocabulary']);
$pager_size = isset($element['#pager_size']) ? $element['#pager_size'] : -1;
$terms = TaxonomyManagerTree::loadTerms($taxonomy_vocabulary, 0, $pager_size);
$list = TaxonomyManagerTree::getNestedListJSONArray($terms);
// Expand tree to given terms.
if (isset($element['#terms_to_expand'])) {
$terms_to_expand = is_array($element['#terms_to_expand']) ? $element['#terms_to_expand'] : array($element['#terms_to_expand']);
foreach ($terms_to_expand as $term_to_expand) {
TaxonomyManagerTree:
self::getFirstPath($term_to_expand, $list);
}
}
$element['#attached']['library'][] = 'taxonomy_manager/tree';
$element['#attached']['drupalSettings']['taxonomy_manager']['tree'][] = array('id' => $element['#id'], 'name' => $element['#name'], 'source' => $list);
$element['tree'] = array();
$element['tree']['#prefix'] = '<div id="' . $element['#id'] . '">';
$element['tree']['#suffix'] = '</div>';
}
return $element;
}