public function executeGetKkm()
{
$sc_id = $this->getRequestParameter('student_course_id');
$sc = StudentCoursePeer::retrieveByPK($sc_id);
$this->forward404Unless($sc);
$c = new Criteria();
$c->add(SubjectGradingPeer::SUBJECT_ACCAL_ID, $sc->getSubjectAccalId());
$sg = SubjectGradingPeer::doSelectOne($c);
$this->forward404Unless($sg);
return $this->renderText("<input type='text' size='7' value='" . $sg->getPercentage() . "' id='kkm' name='kkm'/>");
}
