def ever_followed
      follow = []
      self.followed_history.each do |h|
        follow << h.split('_')[0].constantize.find(h.split('_')[1])
      end
      follow
    end
def ever_followed
      follow = []
      self.followed_history.each do |h|
        follow << h.split('_')[0].constantize.find(h.split('_')[1])
      end
      follow
    end
see model's followed history

 Example:
   >> @ruby.ever_followed
   => [@jim]