/**
* Update group and membership info in underlying 'course-' group (group type 4)
*
* Method is called anytime after a course is saved
*
* @param $course - course object
*/
public function onAfterStoreCourse($course)
{
// Get a new group object
$group = new \Hubzero\User\Group();
// If the course doesn't have a group id set, then we need to create a new group
if (!$course->get('group_id')) {
// Set some group info
$group->set('cn', 'course-' . $course->cn);
$group->create();
$group->set('type', 4);
// group type 4 = course
// Set the new group gidNumber as the group_id in the course and update
$course->set('group_id', $group->get('gidNumber'));
$course->update();
} else {
$group->read($course->get('group_id'));
}
// Set the group description (in case it's been changed)
$group->set('description', $course->get('description'));
// Get all of the course members that are not yet group members (i.e. they need to be added to the group)
$add = array_diff($course->get('members'), $group->get('members'));
foreach ($add as $a) {
$group->add('members', $a);
}
// Get all of the group members that are not members of the course (i.e. they need to be removed from the group)
$remove = array_diff($group->get('members'), $course->get('members'));
foreach ($remove as $r) {
$group->remove('members', $r);
}
// Finally, update the group
$group->update();
}
