Rails, using ActiveRecord to find all rows matching a parent row attribute

Posted by randombits on Stack Overflow See other posts from Stack Overflow or by randombits
Published on 2010-06-07T03:10:29Z Indexed on 2010/06/07 3:22 UTC
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Filed under:

ruby-on-rails

|

ruby

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activerecord

I have a class Foo which has_many Bars. Foo has an attribute, some_id. I want to Retrieve all Bar instances where the Foo has some_id = N. In SQL this translates into something like:

select * from bar inner join foo on foo.id = bar.foo_id WHERE foo.some_id = N

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