From: Phlip <phlip2005@...>
Date: 2008-08-12T20:42:36+09:00
Subject: Re: :through relationship

Ganesh Kumar wrote:

>   Is it possible to use :through in  has_and_belongs _to_many
> relationship

I guess it's my turn to apply the rubber stamp!

Ruby is a language. Rails, and ActiveRecord, are frameworks written in that 
language. The best forum for questions about them is the Ruby-on-Rails-talk 
group at Google Groups.

And there are those (on that newsgroup) who never use habtm because it gets in 
the way the instant you think to add a property to the intermediate table. I 
suspect :through only works thru has_many - not even belongs_to.

If you only need to access the through item, just write a little accessor for it:

   def bars
     foos.map(&:bars).flatten
   end

-- 
   Phlip