public TermStorage::loadChildren($tid, $vid = NULL)
Finds all children of a term ID.
Parameters
int $tid: Term ID to retrieve parents for.
string $vid: An optional vocabulary ID to restrict the child search.
Return value
\Drupal\taxonomy\TermInterface[] An array of term objects that are the children of the term $tid.
Overrides TermStorageInterface::loadChildren
File
- core/modules/taxonomy/src/TermStorage.php, line 170
Class
- TermStorage
- Defines a Controller class for taxonomy terms.
Namespace
Drupal\taxonomy
Code
public function loadChildren($tid, $vid = NULL) {
if (!isset($this->children[$tid])) {
$children = array();
$query = $this->database->select('taxonomy_term_field_data', 't');
$query->join('taxonomy_term_hierarchy', 'h', 'h.tid = t.tid');
$query->addField('t', 'tid');
$query->condition('h.parent', $tid);
if ($vid) {
$query->condition('t.vid', $vid);
}
$query->condition('t.default_langcode', 1);
$query->addTag('term_access');
$query->orderBy('t.weight');
$query->orderBy('t.name');
if ($ids = $query->execute()->fetchCol()) {
$children = $this->loadMultiple($ids);
}
$this->children[$tid] = $children;
}
return $this->children[$tid];
}
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