[LRUG] Binding the creation of 2+ objects together

[Andrew Stewart]

On 31 Jul 2008, at 17:04, Anthony Green wrote:

> Has anyone encountered a situation in which the business rules state  
> that a
> object can't be saved unless its twin is saved too ?
>
> I'm seeing this is pattern repeated where an object with a has_one
> relationship to a twin is created but you need to check its twin has  
> created
> as well and that both will save. You can't create one entry in a table
> without a corresponding entry in a different table.


You could do:

models = [ @a, @b ]
models.each(&:save) if models.map(&:valid?).all?

Regards,
Andy Stewart

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