I think this is what you're looking for - http://groups.google.com/group/datamapper/browse_thread/thread/64bb1d8513cfaafe/0571cead879abfd2#0571cead879abfd2
Mark. On Sep 13, 11:12 pm, emz452 <[email protected]> wrote: > Hi there, > > At the moment, I have a mobile phone field in my table. It is not > compulsory for the user to provide a mobile phone number, however you > cannot have 2 users with the same mobile phone. > > Therefore, I would like to allow nulls, but enforce uniqueness on any > non-blank records. I'm currently using this: > :validations => {:unique => true, :nullable => true}) > > However, understandably, this also enforces uniqueness on nils, so you > can only have one record with a blank mobile phone number. > > I'm not sure how best to achieve what I'm trying to do, so if anyone > has any suggestions it would be greatly appreciated. > > Thanks, > Emily --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "DataMapper" 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/datamapper?hl=en -~----------~----~----~----~------~----~------~--~---
