I had some problems to see ratings when I use rating system for hub course. I use ratings like that:
- the summary popup is broken when unlogged users access it from the front page. To fix it I added $PAGE->set_context($context); after $PAGE->set_url($url) in rating/index.php.
- I changed the renderer to check when useritemid is empty (otherwise the ratings weren't displayed for unlogged user)
Note: or we could remove the $rating->itemuserid!=$USER->id test? if any people can view, so the item creator can. Or maybe I'm missing something...