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Something very convenient we used to use in rails 3.0 is the scope reusability. Lets see an example.
class Wheel < AR::B
belongs_to :car
scope :deflated, where (:deflated => true)
end
class Car < AR::B
has_many :wheels
scope :out_of_service, joins(:wheels) & Wheel.deflated
end
But it does not seems to work anymore in 3.1, do you know if there is a new way to do that ?
Thanks
My feedback on this, it does work, not sure where my problem was coming from.
You can also use the merge() function, & is a shortcut.
Cheers