rails Dirty object concept is not working with nested att

[Sunny Bogawat]

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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[Sunny Bogawat]

Hi,

Anybody know how this will work?

[Frederick Cheung]

On Sep 21, 12:10 pm, Sunny Bogawat <li...@ruby-forum.com> 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  @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?
>

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

[Sunny Bogawat]

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?