Rails - Jan 2010 - Help with nested model forms

class Message < ActiveRecord::Base
  belongs_to :author
  accepts_nested_attributes_for :author
end

I''m using the above and it''s working perfectly. The message
gets saved
with an author_id attribute which references the author (tha author
record gets saved too).

The problem:

Sometimes I don''t want to save the author because the author already
exists (I just want to reference it). I just want the message to get
saved with the author_id reference. How can I override or modify the
normal saving behaviour when using the accepts_nested_attributes_for
method?

Thanks,

Elías

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Hello Elias

I wonder that this works in any way. Normally in an 1:n relation the 1 
accepts the nested attributes for the n. So this would be the way to go 
for you:

 class Author < ActiveRecord::Base
  has_many :messages
  accepts_nested_attributes_for :messages
 end

Then you can make a (possibly almost empty) form for Author with 
fields_for the message(s).

Regards, T.
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On Mon, Jan 18, 2010 at 12:09 AM, elioncho
<elioncho-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> wrote:
> class Message < ActiveRecord::Base
>  belongs_to :author
>  accepts_nested_attributes_for :author
> end
>
> I''m using the above and it''s working perfectly. The
message gets saved
> with an author_id attribute which references the author (tha author
> record gets saved too).
>
> The problem:
>
> Sometimes I don''t want to save the author because the author
already
> exists (I just want to reference it). I just want the message to get
> saved with the author_id reference. How can I override or modify the
> normal saving behaviour when using the accepts_nested_attributes_for
> method?
>
> Thanks,
>
> Elías
>
>
Elías, I would recommend taking a look at the following screencasts:

http://railscasts.com/episodes/196-nested-model-form-part-1
http://railscasts.com/episodes/197-nested-model-form-part-2

Good luck,

-Conrad

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