https://stackoverflow.com/questions/62193858/in-ruby-is-it-possible-to-define-constants-in-a-subclass-from-a-superclass#comment109997144_62193858

62193858.rb

class Base
  def self.friendly_name
    "Default Friendly Name"
  end
end

class Child1 < Base

end

class Child2 < Base
  def self.friendly_name
    "A more specific friendly name"
  end
end

p Child1.friendly_name # Default Friendly Name
p Child2.friendly_name # A more specific friendly name