Rails core - Feb 2009 - [PATCH] Primary key on HABTM join table now raises an exception

Hello all. Most of us have created a habtm relationship at some point,
and forgotten to remove the default primary key from the join table.
It works at first, tests usually pass, but eventually you get cryptic
duplicate primary key errors from the database.

My fix raises an exception any time you try to create a habtm
association.  It rails right away, loudly, and with a clear message
letting you know what you''ve done wrong.  I''d really
appreciate
reviews and feedback.  Here''s the ticket:

http://rails.lighthouseapp.com/projects/8994/tickets/2086

Thanks,

Jaime

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