On May 12, 3:15 am, Nadal <[email protected]> wrote:
> class User < AR
> end
>
> user = User.new
>
> Let's say that I have a user instance with me. After this record is
> saved I want an after_save callback which would print the id of the
> record.
> The only catch is that I am not allowed to change the User class. How
> can I accomplish my goal? Is that even possible to add an after_save
> callback on a particular instance object. Any metaprogramming hack.
> I'm sure ruby does provide some tool.

well on top of what Colin says you can do

def user.some_method

end

or user.extend SomeModule

I think both will prevent you from marshalling the object and I seem
to remember that in MRI both will cause ruby to dump it's cache of
method names to implementations

Fred
>
> This would be a trivial issue if I were allowed to change the User
> class but I am not.
>
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