How do I replicate class_inheritable_accessor's behavior in Rails 3.1?

Question

Beginning with Rails 3.1, class_inheritable_accessor produces deprecation warnings, telling me to use class_attribute instead. But class_attribut

Answer 1

class_attribute won't pollute its parent if it's used as intended. Make sure you're not changing the mutable items in-place.

types_and_classes.keys.each do |t|
  self.presented = presented.merge({t => types_and_classes[t]})
end