gistfile1.txt

    s = Tire.search(SEARCH_INDEX_NAME, :type => 'album', :size => 10) do
      query do
        boolean do
          genres.each do |g|
            should { string "genres:#{g}" }
          end
        end
      end
      unless already_seen_albums.empty?
        filter :not , {:ids => { :values => already_seen_albums }}
      end
    end