From: Cameron McBride <cameron.mcbride@...>
Date: 2005-02-13T12:38:11+09:00
Subject: Re: Rails: has_and_belongs_to_many

Greetings,

> I am experimenting with Rails, and I have the following question regarding
> ActiveRecord.

first off, the rails list might usually be more helpful (quicker) with
rails questions rather than ruby-talk.

> If I want to model a situation where a many to many relationship has some
> fields associated with it, is there any way to do it with ActiveRecord?
> 
> For instance, if several stores have product inventory I would have a many
> to many relation between the "products" table and the "stores" table, with
> the quantity stored in the table "stores_products".

um, yes.   but like your subject says, it's the
has_and_belongs_to_many part that does EXACTLY what you're talking
about.  in good faith, here is the link:
http://ar.rubyonrails.org/classes/ActiveRecord/Associations/ClassMethods.html#M000011

or look at the 'associations.rb' in the examples directory of AR.

Cameron