Active record find method over-ride

my_object.rb

class MyObject < ActiveRecord::Base
  ...
  
  protected
  
  def self.find(*args)
    if results = super(*args)
      # Code to add stuff to the my_object.extra_data object
      ...
    end
    
    results
  end
end

my_object_new.rb

# One working solution - using after_find callback http://api.rubyonrails.org/classes/ActiveRecord/Callbacks.html
class MyObject < ActiveRecord::Base
  ...
  
  after_find :populate_extra_data
  protected
  
  def populate_extra_data
    self.exta_data = ...
    
    self
  end
end

problem.txt

The above is a pattern used in a rails 2.3.18 app I am currently upgrading. 

This causes a lot of issues in the higher versions of rails as find method is 
not invoked as frequently as it used to be in the 2.3.18 version of rails. 

A cursory search for the '.find(' pattern in the activerecord versions show 
the following number of instances:

     $ grep -ir "\.find(" activerecord-2.3.18/lib  | wc -l
      98

     $ grep -ir "\.find(" activerecord-3.2.18/lib/ | wc -l
      37

Even though, most of the occurences are in the comments, it does explain why 
my_object.extra_data is nil in many instances. 

What would be a good way to refactor this code?