Rails - May 2006 - Pagination with habtm

Hello-

I am building a discussion board-like application in which messages are 
associated with one or more workgroups via has_and_belongs_to_many.  I 
would like to be able to display to my users a distinct list of messages 
for the workgroup(s) that they are part of in paginated form.  The SQL 
for this query would be something like the following:

select distinct (m.id), m.title, m.created_at from messages m, 
messages_workgroups mw, workgroups w where m.id = mw.message_id and w.id 
= mw.workgroup_id and w.id in (1,2,3)

How can I do something like this using the pagination functionality?  I 
feel as if I might be missing something simple here.

Thanks.

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