Donald,

Yes, please create a patch.

Thanks,
Eloy

On Apr 12, 2009, at 12:01 AM, Donald Ball wrote:

>
> A fairly common UI requirement is for a user to be able to choose an
> existing object or create a new one, e.g. select or supply an address
> for a shipment. The accepts_nested_attributes_for code goes some way
> towards supporting this use case, but falls short in a couple of
> areas. The basic problem is that the parameters hash might include
> both an 'address_id' value (from a select box of existing addresses
> from which to choose) and an 'address_attributes' value (from the
> embedded model form), and the behavior of
> accepts_nested_attributes_for in this situation is not well-defined
> and is in some cases sensitive to the order in which the hash keys are
> processed.
>
> I've written up a simple rails app with a unit test suite which
> defines the current behavior and exposes at least a few oddities
> therein:
>
> http://github.com/dball/nested_test/tree/master
>
> There are probably some other corner cases I failed to consider in
> this test suite, but it's at least a start.
>
> I am working around the problem at least partially in my controllers
> by massaging the parameters before sending them to the model, but a
> more general solution is probably worthwhile. I figured I'd check here
> to see if others agree before digging in and trying to patch
> active_record itself.
>
> - donald
>
> >


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