On Mon, Jul 14, 2014 at 6:07 AM, Ronald Fischer <li...@ruby-forum.com> wrote: > I have 3 models, say A, B and C, and they are set up like this: > > A: > has_many :Bs > has_many :Cs, through: B
> In my model for C, I want to declare, that a column ccol within C must > be unique, but only within the scope of a certain A. > Is there a possibility to achieve this? With a custom validation, you can theoretically do anything :-) That said: consider that your expressed goal is a Law of Demeter violation, and might be reason to rethink your models? Hard to say more without understanding the actual domain... FWIW, -- Hassan Schroeder ------------------------ hassan.schroe...@gmail.com http://about.me/hassanschroeder twitter: @hassan -- You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group. To unsubscribe from this group and stop receiving emails from it, send an email to rubyonrails-talk+unsubscr...@googlegroups.com. To post to this group, send email to rubyonrails-talk@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/rubyonrails-talk/CACmC4yB85Er1O%2B2WKAJd%2BNqJqKCgG5rg%2BLevWzWiYfbc%2B7k-dA%40mail.gmail.com. For more options, visit https://groups.google.com/d/optout.
