On Mon, Mar 9, 2009 at 6:48 AM, Frederick Cheung <[email protected]
> wrote:

>
>
> On 9 Mar 2009, at 11:09, engamocap wrote:
>
> >
> > Hi all,
> >
> > I have two tables:
> >
> > TABLE 1
> > A pk - fk (referencesc TABLE 2)
> > B pk
> > C pk
> > D pk
> > E
> > F
> >
> > TABLE 2
> > A pk
> > G
> > H
> > I
> > L
> >
> > I don't use incremental field (id). I'd like don't use find_by_sql.
> > How can I define both models to use correctly find method (with
> > include)? With only one column primary key I haven't problems.
> > I thought two solutions, but I don't like these very much (especially
> > the second):
> >
> There (at least used to be) a plugin that added composite primary key
> support to rails. I don't remember what it was called (never used it
> myself) but you might be able to track it down.
>
> Fred
>
> > 1) modify TABLE 1 (add field id as primary key and define A,B,C,D as
> > unique) and TABLE 2 (column A reference to field id of TABLE 1)
> > 2) I use DB web interface only read mode (users cannot write and
> > update) and then I can pretend (in model) that TABLE 1 primary key
> > were only column A
> >
> > Can you help me?
> >
> > Thank you very much
> > engamocap
> >
> > >
>
>
Fred, I believe that you're talking about the following:

http://compositekeys.rubyforge.org/

-Conrad

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