My error in terminology -- it's not a join table, but rather a "fact" table in the Dimensional Database sense. Would it be any different if this was a HABTM table?
Frederick Cheung wrote: > ...If you're going do be > doing foo.save! (or foo.update_attributes which calls save) then you > need a primary key, it's just how active record works Fred, with all respect, I can't accept your assertion at face value: I've made thousands of calls to foo.update_attributes on this table, and only this particular update has triggered the error. There must be something else going on. - ff -- Posted via http://www.ruby-forum.com/. -- You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/rubyonrails-talk?hl=en.

