On Wednesday, 14 August 2013 16:30:38 UTC-4, Ruby-Forum.com User wrote: > > Hi, > I'm developing a app with dynamic field using hstore ( postgres ). > The app works great, but now, i'm trying to implement validations. > my code is: > > #model > .. > def initialize_custom_fields > class_eval do > validates field.f, :presence => true > end > end >
This is not a good idea - in development, this *might* work, but in production this will permanently attach a new validation to the class every time it is called. Don't do that. :) > .. > > #user controller > def create > user = User.new > user.initialize_custom_fields > user.attributes = params[:user] > user.save > end > > The first time I press "save" button, the validations works as well, but > the second one i'm getting this error: > > undefined local variable or method `_callback_before_170045' for > #<User:0x007f80f9990558> > > Anyone have a idea for solution this error.. ? > > If you really want different validations every time, it would be cleaner to use something like `validate :some_method_name` and then write explicit code to check the fields you're expecting. --Matt Jones -- 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/65ff57ff-e750-477b-a4b2-e06d5cfb66cc%40googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out.
