I have separate category pages for a handful of topics on my site. For example, category-web.php, category-art.php, etc.
On each of those category pages is an archive of all the posts in that category. I would like to offer visitors a way to filter it further by choosing tags within those categories.
I need something that will display a list of tags in use within only the current category, not all categories. Then if a user clicks on one of those tag names, the tag archive page will display posts only from that tag.
The closest I've found so far is wp list_tags plug in. Maybe I'm not using it properly. It does list tags as links, but it lists all of them, not just the ones in use within that category.
Your help is greatly appreciated.