Elegantly selecting attributes from has_many :through join models in Rails

Question

I\'m wondering what the easiest/most elegant way of selecting attributes from join models in has_many :through associations is.

Lets say we have Items, Catalogs, and Cat

Answer 1

Just adding answer so that it might help others

CatalogItem.joins(:item, :catalog).
  where(items: { id: 4 }).pluck(:position).first