SiteNode 的 counter_cache 去掉，没用处，外加上目前 Mongoid 在这里有个 的 Bug;

Author: huacnlee

app/assets/javascripts/app.coffee

@@ -35,7 +35,7 @@ window.App =
   faye_server_url : ''
   asset_url : ''
   root_url : ''
-  
+
   isLogined : ->
     App.current_user_id != null
 
@@ -66,7 +66,7 @@ window.App =
     if !App.isLogined()
       location.href = "/account/sign_in"
       return false
-      
+
     $el = $(el)
     likeable_type = $el.data("type")
     likeable_id = $el.data("id")
@@ -154,7 +154,6 @@ window.App =
       $(document).attr("title", new_title)
     true
 
-
   init : () ->
     App.initForDesktopView()
     FormStorage.restore()

app/models/site.rb

@@ -11,7 +11,6 @@ class Site
   field :desc
 
   belongs_to :site_node
-  counter_cache :name => :site_node, :inverse_of => :sites
   belongs_to :user
 
   validates_presence_of :url, :name, :site_node_id

app/models/site_node.rb

@@ -4,8 +4,7 @@ class SiteNode
   include Mongoid::BaseModel
 
   field :name
-  field :sites_count, :type => Integer
-  field :sort, :type => Integer, :default => 0
+  field :sort, type: Integer, default: 0
   has_many :sites
 
   validates_presence_of :name