use the user presenter, luke

app/controllers/application_controller.rb

@@ -13,9 +13,7 @@ class ApplicationController < ActionController::Base
 
   inflection_method :grammatical_gender => :gender
 
-  helper_method :notification_count,
-                :unread_message_count,
-                :all_aspects,
+  helper_method :all_aspects,
                 :all_contacts_count,
                 :my_contacts_count,
                 :only_sharing_count,
@@ -38,15 +36,6 @@ class ApplicationController < ActionController::Base
     end
   end
 
-  ##helpers
-  def notification_count
-    @notification_count ||= Notification.for(current_user, :unread =>true).size
-  end
-
-  def unread_message_count
-    @unread_message_count ||= ConversationVisibility.sum(:unread, :conditions => "person_id = #{current_user.person.id}")
-  end 
-
   def all_aspects
     @all_aspects ||= current_user.aspects
   end

app/controllers/notifications_controller.rb

@@ -41,6 +41,8 @@ class NotificationsController < ApplicationController
     end
     @group_days = @notifications.group_by{|note| I18n.l(note.created_at, :format => I18n.t('date.formats.fullmonth_day')) }
 
+    @unread_notification_count = current_user.unread_notifications.count
+
     respond_to do |format|
       format.html
       format.xml { render :xml => @notifications.to_xml }

app/helpers/layout_helper.rb

@@ -36,16 +36,11 @@ module LayoutHelper
 
   def set_current_user_in_javascript
     return unless current_user
-
+    current_user_presenter = UserPresenter.new(current_user)
+    
     content_tag(:script) do
       <<-JS.html_safe
-        app.user(
-          _.extend(#{current_user.person.as_api_response(:backbone).to_json}, {
-            notifications_count : #{notification_count},
-            unread_messages_count : #{unread_message_count},
-            admin : #{current_user.admin?}
-          })
-        );
+        app.user(#{current_user_presenter.to_json});
       JS
     end
   end

app/models/user.rb

@@ -98,6 +98,14 @@ class User < ActiveRecord::Base
     where('last_sign_in_at > ?', time)
   end
 
+  def unread_notifications
+    notifications.where(:unread => true)
+  end
+
+  def unread_message_count
+    ConversationVisibility.sum(:unread, :conditions => "person_id = #{self.person.id}")
+  end
+
   # @return [User]
   def self.find_by_invitation(invitation)
     service = invitation.service

app/presenters/user_presenter.rb

+class UserPresenter
+  attr_accessor :user
+  
+  def initialize(user)
+    self.user = user
+  end
+
+  def to_json(options = {})
+    self.user.person.as_api_response(:backbone).update(
+      { :notifications_count => notifications_count,
+        :unread_messages_count => unread_messages_count,
+        :admin => admin
+      }
+    ).to_json(options)
+  end
+
+  protected
+
+  def notifications_count
+    @notification_count ||= user.unread_notifications.count 
+  end
+
+  def unread_messages_count
+    @unread_message_count ||= user.unread_message_count
+  end
+
+  def admin
+    user.admin?
+  end
+end
\ No newline at end of file

app/views/notifications/index.html.haml

 #notifications_content
   .span-13
     %h2
-      %span.notification_count{:class => ('unread' if notification_count > 0)}
-        = notification_count
+      %span.notification_count{:class => ('unread' if @unread_notification_count >0  )}
+        = @unread_notification_count
       = t('.notifications')
   .span-8.last
     = link_to t('.mark_all_as_read'), notifications_read_all_path, :class => 'button'