Tuesday, April 19, 2011

[Rails] Re: has a field through an association

On Apr 18, 1:59 pm, Garrett Lancaster <glanc...@garrettlancaster.com>
wrote:
> Hey guys,
>
> Trying to figure out how to do something like the following:
>
> class Child
>      belongs_to :parent
>      has_field :some_field, :through => :parent
> end
>
> class Parent
>      has_one :child
>      attr_accessible :some_field
> end
>
> child.some_field #=> parent.some_field
> child.some_field = value #=> sets parent.some_field = value
>
> I can of course accomplish this by adding custom accessors to Child, but
> looking for a better solution. I could also write a plugin that
> dynamically adds the accessors, but not sure if something already exists.
>

It sounds like you're looking for something like delegate_belongs_to:

https://github.com/faber/delegate_belongs_to

It does pretty much exactly what you've described.

--Matt Jones

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