On Feb 9, 3:52 am, Peter Vandenabeele <pe...@vandenabeele.com> wrote: > On Thu, Feb 9, 2012 at 7:07 AM, Hassan Schroeder <hassan.schroe...@gmail.com > > > wrote: > > On Wed, Feb 8, 2012 at 8:54 PM, Bob Smith <bsm...@gmail.com> wrote: > > > > What I am trying to do is have a *unique value* set in each new record > > > See:http://rubygems.org/gems/uuid > > Indeed. > > And maybe better to not mess with the `def initialize`, but use the > `after_initialize` function that is provided by Rails. I did it like this. > > ../lib/uuid_helper.rb > > require 'uuidtools' > > module UUIDHelper > extend ActiveSupport::Concern > > included do > after_initialize :set_uuid > def set_uuid > unless uuid # Note 1 below > self.uuid = UUIDTools::UUID.random_create.to_s > end > end > end > end > > ../app/model/person.rb > > class Person < ActiveRecord::Base > > # UUID > include UUIDHelper > ... > end > > Note 1: > Be careful, it is a little tricky to _only_ set the value of the uuid > when it is not yet present, otherwise reading back the value > from the database will build a new instance of Person with a > new random uuid. The code above is well tested and works. > > Maybe you will also need to add ../lib to your default load path. > In config/application.rb > > # Custom directories with classes and modules you want to be > autoloadable. > config.autoload_paths += %W(#{config.root}/lib) > config.autoload_paths += Dir["#{config.root}/lib/**/"] > > HTH, > > Peter > > *** Available for a new project *** > > Peter > Vandenabeelehttp://twitter.com/peter_vhttp://rails.vandenabeele.comhttp://coderwall.com/peter_v
I don't have a config/application.rb. Forgot to mention it, but I'm using 2.3.9 until I get rid of bugs, then the 3.0 project starts.. :> Can this be done for 2.3.9? Thanks Bob -- You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group. To post to this group, send email to rubyonrails-talk@googlegroups.com. To unsubscribe from this group, send email to rubyonrails-talk+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/rubyonrails-talk?hl=en.
