Rails - May 2005 - (fixed) Mixing in functionality in ActiveRecord? (was Re: has_many and belongs_to associations...)

I found out a way to fix this -- I use the same pattern as the search 
generator.

I require ''has_attachments'', and then put a line in my model
that calls
this ''has_attachments'' method:

   class ActiveRecord::Base

      def self.has_attachments
         class_eval <<-EOV
            include HasAttachments
            has_many :attachments, :foreign_key =>
''record_id'',
:conditions => "record_table =
''#{self.table_name}''"
         EOV
      end

   end

...then a module follows, with my (not yet fully tested, and specific 
to my implementation) attachment functions. Now any of my models may 
have files attached to them.