Django-tagging | Filtering results

[Barry Morrison]

Total brain block.

code: https://gist.github.com/2c70c0992ba14ded1593

The desired result is something like this

/favs/ will show all favorites (no tag cloud)

/favs/Source1

Will display tag cloud associated with only Source1

/favs/Source2

will display tag cloud associated with only Source2

I'm struggling to figure out how to filter on source to only display the tags associated with the source.

Thanks!