Rails - Jan 2008 - Overriding default Rails methods

Hey guys,

What''s the best practices for overriding default Rails methods? I
can''t
seem to find a guide on this topic anywhere online.

Here''s the deal - I want to override the request_forgery_protection for
forms because we don''t set session_ids for bots, and they are now 
generating exceptions.

I have created a file called
''override_request_forgery_protection.rb'',
put it in /lib, and added to application.rb the line:

require ''override_request_forgery_protection.rb''

Now in the file I have put in the following code:

module ActionController::RequestForgeryProtection
  def self.included(base)
    base.class_eval do
      alias_method_chain authenticity_token_from_session_id, :session_check
    end
    base.extend(ClassMethods)
  end
 
  module ClassMethods
 
    def authenticity_token_from_session_id_with_session_check
      if defined? session.session_id  # We have the session ID - behave 
as rails normally would
        authenticity_token_from_session_id_with_session_check
      else  # We don''t have a session ID, instead of croaking, lets
just
say the authenticity token is bad
        return false
      end
    end
 
  end
 
end


However, this code doesn''t seem to be being executed. I am setting 
breakpoints in eclipse, and they''re not being hit. Any ideas please?

Thanks!

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I managed to get the desired outcome through the following (small)
piece of code:

module ActionController
  module RequestForgeryProtection

    def authenticity_token_from_session_id_with_session_check
      if defined? session.session_id  # We have the session ID -
behave as rails normally would
        authenticity_token_from_session_id_without_session_check
      else  # We don''t have a session ID, instead of croaking, lets
just say the authenticity token is bad
        return false
      end
    end

 
alias_method_chain :authenticity_token_from_session_id, :session_check
  end

end
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