Merge pull request #15 from rjsamson/avg-karma

show average karma in user profile

app/models/user.rb

@@ -56,6 +56,14 @@ class User < ActiveRecord::Base
     Keystore.value_for("user:#{self.id}:karma").to_i
   end
 
+  def average_karma
+    if self.karma == 0
+      0
+    else
+      self.karma.to_f / (self.stories_submitted_count + self.comments_posted_count)
+    end
+  end
+
   def stories_submitted_count
     Keystore.value_for("user:#{self.id}:stories_submitted").to_i
   end

app/views/users/show.html.erb

@@ -21,7 +21,7 @@
   
   <label class="required">Karma:</label>
   <span class="d">
-    <%= @showing_user.karma %>
+    <%= @showing_user.karma %> (average <%= number_with_precision(@showing_user.average_karma, :precision => 2) %>)
   </span>
   <br>