public static function getStudyareaSearchstring($sem_tree_ids, $depth = true)
{
$db = DBManager::get();
$searchtext = "";
$study_areas = TreeAbstract::getInstance('StudipSemTree', false);
foreach ($sem_tree_ids as $sem_tree_id) {
$study_area_path = $depth ? (array) $study_areas->getParents($sem_tree_id) : array();
array_unshift($study_area_path, $sem_tree_id);
foreach ($study_area_path as $key => $study_area_path_part) {
$path_part = array_splice($study_area_path, 0, $key + 1);
$searchtext .= " sem_tree_" . implode("_", $path_part);
}
}
return $searchtext;
}
