fix comment votes affecting comment updater_id

app/models/comment.rb

@@ -105,15 +105,15 @@ class Comment < ActiveRecord::Base
     do_not_bump_post == "1"
   end
   
-  def vote!(score)
-    numerical_score = score == "up" ? 1 : -1
+  def vote!(val)
+    numerical_score = val == "up" ? 1 : -1
     vote = votes.create(:score => numerical_score)
     
     if vote.errors.empty?
       if vote.is_positive?
-        increment!(:score)
+        update_column(:score, score + 1)
       elsif vote.is_negative?
-        decrement!(:score)
+        update_column(:score, score - 1)
       end
     end
 

test/unit/comment_test.rb

@@ -73,6 +73,17 @@ class CommentTest < ActiveSupport::TestCase
         assert_equal(c1.created_at.to_s, p.last_commented_at.to_s)
       end
 
+      should "not record the user id of the voter" do
+        user = FactoryGirl.create(:user)
+        post = FactoryGirl.create(:post)
+        c1 = FactoryGirl.create(:comment, :post => post)
+        CurrentUser.scoped(user, "127.0.0.1") do
+          c1.vote!("up")
+          c1.reload
+          assert_not_equal(user.id, c1.updater_id)
+        end
+      end
+
       should "not allow duplicate votes" do
         user = FactoryGirl.create(:user)
         post = FactoryGirl.create(:post)