Rails - Apr 2006 - multi level :includes for preloading objects from database

I am using :include => :assocation to preload data that I know will be 
used later in the UI over and over.  However I have data like that that 
is an association of one of the associations.  How would i preload that 
data too?

e.g.

grant has_many :people

and

person belongs_to :group

I can''t include the :group association in a Grant.find because its not 
an association of grant, but I use grant.person.group all over the place 
so it hits the db every time.  How can I include group in the 
Grant.find?

thanks.

-- 
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On 4/20/06, John Russell <jjrussell@gmail.com>
wrote:
> I am using :include => :assocation to preload data that I know will be
> used later in the UI over and over.  However I have data like that that
> is an association of one of the associations.  How would i preload that
> data too?
>
> e.g.
>
> grant has_many :people
>
> and
>
> person belongs_to :group
>
> I can''t include the :group association in a Grant.find because its
not
> an association of grant, but I use grant.person.group all over the place
> so it hits the db every time.  How can I include group in the
> Grant.find?
>
> thanks.
>
You can nest the include statements, as of Rails 1.1:
:include => [:grants, {:people => :groups}]

--Wilson.