Rails - Dec 2005 - Anonymous class in ActiveRecord

Hi,

   I have an ActiveRecord subclass called A and it defines a struct as 
follows:

   class A < ActiveRecord::Base
       Fred = Struct.new( :a, :b )
       ....
   end

   No problem using this class, however when I update an instance of A
   I get

   can''t dump anonymous class Class

   I assume it is trying to dump Fred which I would like to be 
transient.


   How does one tell ActiveRecord no to save transients ??


Thank you all !!

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