private function saveSkillThresholdsCmd()
 {
     require_once 'Modules/Test/classes/class.ilTestSkillLevelThreshold.php';
     if (is_array($_POST['threshold'])) {
         $threshold = $_POST['threshold'];
         $assignmentList = $this->buildSkillQuestionAssignmentList();
         $assignmentList->loadFromDb();
         foreach ($assignmentList->getUniqueAssignedSkills() as $data) {
             $skill = $data['skill'];
             $skillKey = $data['skill_base_id'] . ':' . $data['skill_tref_id'];
             $levels = $skill->getLevelData();
             foreach ($levels as $level) {
                 if (isset($threshold[$skillKey]) && isset($threshold[$skillKey][$level['id']])) {
                     $skillLevelThreshold = new ilTestSkillLevelThreshold($this->db);
                     $skillLevelThreshold->setTestId($this->testOBJ->getTestId());
                     $skillLevelThreshold->setSkillBaseId($data['skill_base_id']);
                     $skillLevelThreshold->setSkillTrefId($data['skill_tref_id']);
                     $skillLevelThreshold->setSkillLevelId($level['id']);
                     $skillLevelThreshold->setThreshold($threshold[$skillKey][$level['id']]);
                     $skillLevelThreshold->saveToDb();
                 }
             }
         }
     }
     ilUtil::sendSuccess($this->lng->txt('tst_msg_skl_lvl_thresholds_saved'), true);
     $this->ctrl->redirect($this, self::CMD_SHOW_SKILL_THRESHOLDS);
 }
 private function buildSkillLevelThresholdByArray($data)
 {
     $threshold = new ilTestSkillLevelThreshold($this->db);
     $threshold->setTestId($data['test_fi']);
     $threshold->setSkillBaseId($data['skill_base_fi']);
     $threshold->setSkillTrefId($data['skill_tref_fi']);
     $threshold->setSkillLevelId($data['skill_level_fi']);
     $threshold->setThreshold($data['threshold']);
     return $threshold;
 }