Stop the navigation block from expanding

If you want to stop the navigation from automatically expanding everything you click a course, this is the code you need to change:

1) Go to:  blocks\navigation in your root moddle directory

2)  open renderer.php file

and change this line

if ($item->has_children() && (!$item->forceopen || $item->collapse)) {

to this

if ($item->has_children() && ($depth > 1)) {