Re: [PhillyOnRails] Looking for help overriding clear_old_version in acts_as_versioned

[Flinn Mueller <theflinnster@gmail.com>]

On Feb 14, 2007, at 6:29 PM, Mike Zornek wrote:

> This is really a syntax question as I'm not sure how to override a  
> method
> that is part of a Module.

Add this to your config/environment.rb

module ActiveRecord
  module Acts
    module Versioned
      module ClassMethods
        def acts_as_paranoid_versioned
          acts_as_paranoid
          acts_as_versioned

          # protect the versioned model
          self.versioned_class.class_eval do
            def self.delete_all(conditions = nil); return; end
          end
        end
      end
    end
  end
end

Then instead of both:
acts_as_paranoid
acts_as_versioned

Add this in your class:
acts_as_paranoid_versioned


> The ruby code is here:
>
> http://svn.techno-weenie.net/projects/plugins/acts_as_versioned/lib/ 
> acts_as_
> versioned.rb
>
> The method I need to remove (ie: replace with a method that does  
> nothing) is
> `clear_old_versions`.


Clear old versions only runs after_save, and it's only to prune  
versions in excess of the limit you set.  The reason the old versions  
get deleted is because they are :dependent => :delete_all to the  
original model and get zapped before_destroy.  So the solution is to  
override versioned_class.delete_all.

With this setup, the versioned record doesn't pick up deleted_at.  My  
guess is (I haven't tested it) if you wanted to revive the record, it  
would be easier to revert to the record without deleted_at than  
revert and clear deleted_at so the record is alive again. Ymmv.
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