I believe that this one was a bad example... I found myself implementing this a couple times in the last year:
validate :a_or_b > > def a_or_b > if a? && b? > self.errors.add :a, "You can't choose both options at the same time." > end > end > One of the cases was extremely common: Choose something: [ ] Option 1 [ ] Option 2 [ ] Option 3 [ ] Other <input type="text"> Each option would be an *option_id : integer*, and Other would be *other_option : string* . For that case : validates :option_id, :absence => true, :if => :other_option? validates :other_option, :absence => true, :if => :option_id? Would fit perfectly! (Considering that at least one of them is obrigatory). What do you think ? -- Att, Everton -- You received this message because you are subscribed to the Google Groups "Ruby on Rails: Core" group. To post to this group, send email to rubyonrails-core@googlegroups.com. To unsubscribe from this group, send email to rubyonrails-core+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/rubyonrails-core?hl=en.
