Hi Benjamin

Sorry, the error message is a little cryptic - it means that in your Bar index, 
you need an attribute for the foreign key:

  has foo_id

That way, the search can limit results to bars that are tied to the given foo.

Cheers

-- 
Pat

On 16/07/2011, at 1:18 AM, Benjamin Moses Lieb wrote:

> I have thousands of Foos, each of which can have hundreds of Bars.
> 
> I would like to do foo.bars.search('string'), but this gives me an
> error: Missing Attribute for Foreign Key foo_id
> 
> Apparently I need an actual scope, and not an association for this to
> work. What is the simplest solution to be able to search through a
> model's has_many associations?
> 
> Thanks
> 
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