Rails - Jan 2011 - find_or_create : how to know the resulting operation ?

hello,

find_or_create_by has a different behaviour according to the existence
of the instance in the database,

is it possible to know the resulting operation (find or create) which
has been actually executed ?

thank you,

Fabrice

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With find_or_create, I don''t believe there is a way.

You can certainly do it with find_or_initialize

winter = Tag.find_or_initialize_by_name("Winter")
winter.persisted? # true if record exists, false if it does not


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Just a thought. Maybe you can use a call back before the record is
saved to set up a virtual attribute based on the result of new_record?

On Jan 5, 3:52 am, Fabrice Fabrisss
<li...-fsXkhYbjdPsEEoCn2XhGlw@public.gmane.org>
wrote:
> hello,
>
> find_or_create_by has a different behaviour according to the existence
> of the instance in the database,
>
> is it possible to know the resulting operation (find or create) which
> has been actually executed ?
>
> thank you,
>
> Fabrice
>
> --
> Posted viahttp://www.ruby-forum.com/.
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Fabrice Fabrisss wrote in post #972422:
> hello,
>
> find_or_create_by has a different behaviour according to the existence
> of the instance in the database,
>
> is it possible to know the resulting operation (find or create) which
> has been actually executed ?
Why do you care?  What''s your use case?
>
> thank you,
>
> Fabrice
Best,
--
Marnen Laibow-Koser
http://www.marnen.org
marnen-sbuyVjPbboAdnm+yROfE0A@public.gmane.org

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Thank you for your answers,

I like the solution with the ''initialize'' function but I still
haven''t
tried it.

I have a counter which counts the number of new occurence I will insert 
in the database, that''s why I want to be able to distinguish both
cases,

Sincerely,

Fabrice

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Please quote when replying.

Fabrice Fabrisss wrote in post #972838:
> Thank you for your answers,
>
> I like the solution with the ''initialize'' function but I
still haven''t
> tried it.
>
> I have a counter which counts the number of new occurence I will insert
> in the database, that''s why I want to be able to distinguish both
cases,
Please explain further.  I strongly suspect that there is a better way 
to accomplish what you''re trying to do -- perhaps having the count done
on the DB side would be useful.
>
> Sincerely,
>
> Fabrice
Best,
--
Marnen Laibow-Koser
http://www.marnen.org
marnen-sbuyVjPbboAdnm+yROfE0A@public.gmane.org

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