Perhaps not a rails-core topic.... but... I''ve done this before in a
plugin I''ve done called grouped_scope. Links below. In fact I did
exactly what you mentioned, just method chained construct_sql. Check
if out if you want.
http://github.com/metaskills/grouped_scope/tree/master
http://www.metaskills.net/2008/9/28/jack-has_many-things
- Ken
On Nov 19, 2008, at 4:47 PM, Norm wrote:
>
> I''m working on a plug-in that will allow has_many associations to
> ignore the foreign key. This may sound silly, but there are situations
> where you''d like to join on something other than a single foreign
key.
> Right now, I can configure :conditions for the association, but these
> are in addition to the existing foreign key.
>
> My plug-in would do something akin to http://pastie.org/319143. This
> is really just pseudo-code, I haven''t tested it yet.
>
> So, two questions:
>
> - Am I the only one crazy enough to think something like this is
> useful?
> - How can a plugin monkey-patch ActiveRecord for this? Just override
> the entire construct_sql method?
>
> Thanks for any advice,
>
> Norman
>
>
>
> >
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