If you look at the "Changelog":http://dev.rubyonrails.org/log/trunk/activeresource for ActiveResource, you may notice two important updates. One: the way that the site attribute is copied from the superclass has changed. Where you had something like:

<filter:code lang="ruby"> class Topic < BeastResource site << '/forums/:forum_id' end </filter:code>

You should replace it with:

<filter:code lang="ruby"> class Topic < BeastResource self.site += '/forums/:forum_id' end </filter:code>

The coolest change though, is the new "query string support":http://dev.rubyonrails.org/changeset/5804. Now, you can write code like this: @Topic.find(:all, :forum_id => 1, :sort => 'created_at')@ and get back a query like: @/forums/1/topics.xml?sort=created_at@. (Note, this is not supported by Beast, it is just an example)

I was going to follow this up with a short tutorial on searching Beast with our new querying abilities, but then I looked at how I have the search code implemented. "That controller":http://svn.techno-weenie.net/projects/beast/trunk/app/controllers/posts_controller.rb needs to "lose some weight":http://weblog.jamisbuck.org/2006/10/18/skinny-controller-fat-model.