Rails - Apr 2006 - N:M:K Relationships

Hello there,

I was wondering whether rails 1.1.1 supports N:M:K relationships that is 
having a pivot table with three columns which are primary keys:

  say, (apple_id, orange_id, lemon_id)

It would be so great if Rails could be able to have id-s which as 
n-tuples.

Thanks,

Roland

-- 
Posted via http://www.ruby-forum.com/.

On Tue, Apr 18, 2006 at 09:21:51PM +0200, Roland Mai wrote:
} Hello there,
} 
} I was wondering whether rails 1.1.1 supports N:M:K relationships that is 
} having a pivot table with three columns which are primary keys:
} 
}   say, (apple_id, orange_id, lemon_id)
} 
} It would be so great if Rails could be able to have id-s which as 
} n-tuples.

I wouldn''t expect it to ever support n-way relationships directly. You
can,
however, do this:

AOL
belongs_to :apple
belongs_to :orange
belongs_to :lemon

Apple
has_many :aols

Orange
has_many :aols

Lemon
has_many :aols

Also, I believe you can use has_many :through to get to the other objects
more directly.

} Thanks,
} Roland
--Greg