PORO with ActiveModel::Naming

human.rb

en:
  activerecord:
    models:
      something:
        one: Something
        other: Somethings

class Something
  extend ActiveModel::Naming
end

Something.model_name.human(count: :many) # => "Something"

class Something
  extend ActiveModel::Naming
  extend ActiveModel::Translation
end

Something.model_name.human(count: :many) # => "Somethings"