Current pattern

acts_as_current.rb

module ActsAsCurrent
    extend ActiveSupport::Concern

    included do
        self._current_human_name = self.name.underscore.to_sym
    end

    def make_current
        Thread.current[self.class._current_human_name] = self
    end
   
    module ClassMethods

        attr_reader :_current_human_name
        
        def current
            Thread.current[_current_human_name]
        end
        
        def reset_current
            Thread.current[_current_human_name] = nil
        end
    end
end