On Mon, Oct 12, 2009 at 2:46 PM, Sergio Aristizabal <[email protected]> wrote: > > Hello, > > I suppose this topic has been widely discussed, but i've not found > exactly what i need. > > I thought validate_associations would in fact validate the associations > of my models, but it simply verifies that the fields of the object are > valid. So i need to create some custom validations to do > > I found one solution: > > [code] > validate :obj_must_exist > > def obj_must_exist > errors.add(:obj_id, "must point to an existing obj") if obj_id && > obj.nil? > end > [/code] > > But now i need it in a helper or something like that, because i've to > reuse the same validation several times. I created a file in > config/initializers called validations.rb and put this: > > ActiveRecord::Base.class_eval do > def self.validates_object_exists(obj, obj_id) > obj.errors.add(obj_id, "must point to an existing #{obj}") if obj_id > || obj.nil? > end > end > > But it's just not working... So, what's the "rails way" to do that? What is "just not working"? What is exactly the given error? Are you sure the file is getting loaded? Have you tried explicitly loading it?
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