Rails - Mar 2006 - Need :through to work as has many rather than HABTM.

I''ve a horrible feeling I''m missing something here, but
I''d like to have
something like :through to model a has_many relationship rather than a 
HABTM relationship (and I don''t think it does).

The is the model I have (simplified):

Users have many Models (and Models belong to Users)
Models have many Pieces (and Pieces belong to Models)

In (badly drawn) graphical form:
            _________               _______________
          /                                 /
Users/--------------Models/----------------------Pieces
         \__________             \________________

In a perfect world you would be able to use something like :through to 
get user.pieces...
...but I know we don''t live in one of those. So, is there a neat way of
doing this?

Thanks in advance

Chris T

ChrisT wrote:
> I''ve a horrible feeling I''m missing something here, but
I''d like to have
> something like :through to model a has_many relationship rather than a
> HABTM relationship (and I don''t think it does).
> 
Never mind. Solved this through defining an instance method in the users 
class. Guess I was too eager to uses Edge Rails new bells&whistles 
forgot about the basics.
CT


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ChrisT <chrismtaggart@gmail.com> wrote:
>I''d like to have
> something like :through to model a has_many relationship rather than a
> HABTM relationship
[...]
> Users have many Models (and Models belong to Users)
> Models have many Pieces (and Pieces belong to Models)
[...]
> In a perfect world you would be able to use something like :through to
> get user.pieces...
> ...but I know we don''t live in one of those.
Yep, it just got checked in a few days ago:

   http://dev.rubyonrails.org/changeset/3964

Scott Raymond
http://scottraymond.net/