[Rails] How to find models that have at least one associated has_many

I'm having a senior moment. I've done this before but I can't remember how.

Two active record models,

Foo belongs_to Bar

Bar has_many Foos

I want to find all Bars that have at least one Foo, is it:

Bar.all(:include => :foos, :conditions => "foo.id IS NOT NULL')

or something else?

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Rick DeNatale

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