public function mergeAndDelte( dsClassStudent $old_enrolment )
{
// generiert noch Fehler für parent_enrolment ... ?! (Basil Tosconi )
// check for parent enrolments
if ($old_enrolment->parent_enrolment_id) {
$parent_id = $old_enrolment->parent_enrolment_id;
if (!$this->parent_enrolment_id) {
$this->link('ParentEnrolment', $parent_id);
$this->save();
return true;
}
}
// check if old is parent of others...
$old_childs = $old_enrolment->getChildEnrolments();
if ( $old_childs->count() > 0 ) {
foreach( $old_childs as $child) {
// make me the parent
$child->link('ParentEnrolment', $this->getId() );
$child->save();
}
}
$result = $old_enrolment->delete();
return $result;
}
