Tom Allison <tom@...> writes: > > > Greetings!I'm trying to set up a validation to ensure that a record is unique across three columns; col_one, col_two, col_three. tried this:validates_uniqueness_of :col_one, :scope=>[:col_two, :col_three]and it really doesn't work at all like I had hoped.the docs says this should work class TeacherSchedule < ActiveRecord::Base > validates_uniqueness_of :teacher_id, :scope => [:semester_id, :class_id] > end > Just want to know if there are any experiences out there to share before I write my own validation code. >
Composite keys are frowned upon. You might want to reconsider what you are attempting and introduce a few models to handle the relationship. Of course, you could always create a customer validator. See the rails API. -- 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.
