versioning

It’s nice to have properties, but it would be even nicer if we could easily enable versioning. This is very easy: you just need to specify the name of a method to reach the model that will hold the properties storage. Here is an example that uses the brand new Versions gem:

class Contact < ActiveRecord::Base
  include Versions::Multi
  has_multiple :versions

  include Property
  store_properties_in :version

  property do |t|
    t.string   'name', :indexed => true
    t.string   'first_name'
    t.integer  'age'
    t.datetime 'seen_at', :default => Proc.new { Time.now }
  end
end

Your Version model would look like this:

class Version < ActiveRecord::Base
  include Versions::Auto

  def should_clone?
    true # always clone on update
  end
end

And that’s it. You can use the Contact class as if it had ‘name’ and ‘first_name’ attributes and the content will be transparently versioned.