Rails - Jun 2006 - Ordering Based on created_at in HABTM relationship

I have the following line in my controller:

@tag = Tag.find_by_name @params[:id]

Now, how do I order the rows based on the HABTM relationship  
problems_tags i.e. problems_tags.created_at DESC

Thanks :-)

John Kopanas
http://www.kopanas.com


===========================================================http://www.soen.info
- Index of online software engineering knowledge
http://www.cusec.net - Canadian University Software Engineering  
Conference
http://www.soenlive.com - Presentations from CUSEC