From: Perry Smith <pedz@...>
Date: 2008-02-02T09:52:26+09:00
Subject: Ancestor paths

ActiveRecord does this "trick".  For a normal object, this dump
routine:

def dump(name, obj)
  puts "#{name}'s ancestors: #{obj.class.ancestors.inspect}"
  puts "#{name}'s funky ancestors: #{(class << obj; self;
end).ancestors.inspect}"
end

produces the same list for ancestors and funky ancestors.  For an
ActiveRecord Association, you get something like this:

temp's ancestors: [ Cached::Queue <snip...>
ActiveRecord::Locking::Pessimistic, ActiveRecord::Locking::Optimistic,
ActiveRecord::Validations, Object, Socket::Constants,
InstanceExecMethods, Base64::Deprecated, Base64, Kernel]

temp's funky ancestors:
[ActiveRecord::Associations::BelongsToAssociation,
ActiveRecord::Associations::AssociationProxy, Object, Socket::Constants,
InstanceExecMethods, Base64::Deprecated, Base64, Kernel]

Can someone tell me how this is done or point me to the code in active
record?

Thank you very much,
Perry
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