Don't know what your skill level is, but I would suggest checking out RailsCasts, #47 Two Many-to-Many: http://railscasts.com/episodes/47-two-many-to-many Your join table could be called CarOwners, as a point relevant to the RailsCast.... Check it out... The general idea is that it is maybe better if you use :has_many :through...
Hope this helps. -- You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group. To unsubscribe from this group and stop receiving emails from it, send an email to rubyonrails-talk+unsubscr...@googlegroups.com. To post to this group, send email to rubyonrails-talk@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/rubyonrails-talk/d33d14b9-c9b4-4bb5-9edf-4c9d79554824%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.