This is the mixin I want to use

motion.rb

class Motion < ActiveRecord::Base
  validates_inclusion_of :state, :in =>
    %w(waitingsecond waitingexpedited waitingobjection
       objected voting passed failed approved).push(nil)

  belongs_to  :member
  has_many    :events
  has_many    :motion_conflicts
  has_many    :conflicts, :through => :motion_conflicts

  include Voting
end

voting.rb

module Voting
  #Since its useful to keep track of the votes of members and motions, its preferred to
  #refactor this methods into a module

  # @return [ActiveRecord::Relation] All of the votes cast on this motion
  def votes
    events.votes
  end

  # @return [ActiveRecord::Relation] All of the seconds cast in support of this motion
  def seconds
    events.seconds
  end

  # @return [Fixnum] Count of current yea votes
  def yeas
    votes.yeas.count
  end
  alias :ayes :yeas

  # @return [Fixnum] Count of current nay votes
  def nays
    votes.nays.count
  end
end