Rails - Sep 2010 - rails Dirty object concept is not working with nested att

hi,

I want to use dirty object with nested attributes  here is my example.

i have form having user and addresses field when i am editing  user and
after updating user inside user model i am checking for any field from
user get dirty using @self.changed? method it giving me proper output in
this i am doing @self.address.changed?( I Have polymorphic  association
in user and addresses) but it is giving me nil/false if address is
changed but if  i am putting  @self.changed? in address model it is
giving me proper output.

Please anybody explain me how to use dirty object concept with model
association or with nested attributes?

class User < ActiveRecord::Base

  has_many    :addresses, :as =>:addressee, :dependent => :destroy
  accepts_nested_attributes_for :addresses, :allow_destroy => true
   after_update :send_account_updated_email

    def send_account_updated_email
      self.changed  //giving correct changed field name

      self.addresses.changed          //not working
      self.addresses.first.changed  // not working
   end

end

class Address < ActiveRecord::Base

  belongs_to :addressee, :polymorphic => true

end
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Hi,

 Anybody know how this will work?

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On Sep 21, 12:10 pm, Sunny Bogawat
<li...-fsXkhYbjdPsEEoCn2XhGlw@public.gmane.org>
wrote:
> i have form having user and addresses field when i am editing  user and
> after updating user inside user model i am checking for any field from
> user get dirty using @self.changed? method it giving me proper output in
> this i am doing @self.address.changed?( I Have polymorphic  association
> in user and addresses) but it is giving me nil/false if address is
> changed but if  i am putting  -Zk4iz/Rp5SjuByTkpuCuOQ@public.gmane.org? in
address model it is
> giving me proper output.
>
> Please anybody explain me how to use dirty object concept with model
> association or with nested attributes?
>
Just a hunch, but I think that by the time your after_update runs the
associated objects have already finished saving (so their list of
dirty attributes have clearer). You could validate this by stepping
through AR''s save code.

Fred

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Frederick Cheung wrote:
> On Sep 21, 12:10�pm, Sunny Bogawat
<li...-fsXkhYbjdPsEEoCn2XhGlw@public.gmane.org> wrote:
>>
> Just a hunch, but I think that by the time your after_update runs the
> associated objects have already finished saving (so their list of
> dirty attributes have clearer). You could validate this by stepping
> through AR''s save code.
> 
> Fred
Fred, you''re right and I have validated the same. I was hoping that 
someone else may have come up with a solution to this. Looks like, 
that;s not the case. Does anybody have suggestions?
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