with_inheritance.rb

module WithInheritance
  extend ActiveSupport::Concern

  included do
    def self.rich_text_areas_with_inheritance(*properties)
      properties.each do |property|
        has_rich_text property
        define_method :"best_#{property}" do
          best(property)
        end
        define_method :"best_#{property}_source" do
          best_source(property)
        end
      end
    end
  end

  protected

  def best(property)
    value = send(property)
    value.blank? ? parent&.send("best_#{property}") : value
  end

  def best_source(property)
    value = send(property)
    return nil if !value.blank? # There is a value, no inheritance needed
    best(property)&.record
  end
end