Thursday, January 14, 2016
On Wednesday, January 13, 2016 at 12:13:36 PM UTC-5, Jim wrote:
-- If you want to load matching As without instantiating the Cs, you could do something like:A.where(id: C.where(code: params[:codes]).pluck(:a_id))If you are going to instantiate all As and Cs found anyway, you could just use eager loading:found_c = C.where(code: params[:codes]).includes(:a)found_a = found_c.collect(&:a).uniq
I missed the requirement that each A found should contain *all* desired C records. These queries will find As with *any* of the C records found.
Jim Crate
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