/**
* Converts add button data to data for our add form
*
* @return stdClass Form data, or null if none
*/
function get_default_object_for_add()
{
$obj = (object) pmclass::get_default();
$parent = $this->optional_param('parent', 0, PARAM_INT);
if ($parent) {
$obj->courseid = $parent;
}
return $obj;
}