* Missing files

* Work on post exploration code by traversing dates

app/models/comment_vote.rb

@@ -1,11 +1,16 @@
 class CommentVote < ActiveRecord::Base
   class Error < Exception ; end
 
-  attr_accessor :is_positive
   belongs_to :comment
   belongs_to :user
+  before_validation :initialize_user, :on => :create
+  validates_presence_of :user_id, :comment_id
   
   def self.prune!
     destroy_all(["created_at < ?", 14.days.ago])
   end
+  
+  def initialize_user
+    self.user_id = CurrentUser.user.id
+  end
 end