cache privilege user list.

app/models/user/user.rb

@@ -2,7 +2,7 @@ class User
   
   include Mongoid::Document
   include Mongoid::Timestamps
- 
+
   devise :database_authenticatable, :recoverable, :rememberable, :trackable, :registerable
   
   mount_uploader :avatar, AvatarUploader
@@ -11,6 +11,10 @@ class User
   field :active_role
   field :nccu_ldap_uid
   
+  # field :cache_dept
+  # has_one :cache_dept, :class_name => "I18nVariable", :as => :language_value, :autosave => true, :dependent => :destroy
+  field :cache_dept,type: Hash
+
   has_many :attribute_values, :autosave => true, :dependent => :destroy
   has_many :app_auths,as: :privilege_apps,:inverse_of => :privilege_lists
   has_many :blocked_apps,  :inverse_of => :blocked_users, :class_name => "AppAuth"
@@ -22,6 +26,22 @@ class User
   has_and_belongs_to_many :sub_roles
   accepts_nested_attributes_for :attribute_values, :allow_destroy => true
 
+  def create_dept_cache
+    dept_hash = {}
+
+    VALID_LOCALES.each  do |loc|
+      locale = loc.to_sym
+          # debugger
+      # if(self.cache_dept.nil?)
+      #   self.build_cache_dept key: "dept_cache_user_#{self.id}"
+      # end
+      dept_hash[locale] = sub_roles.collect{|sr| sr.i18n_variable[locale]}.join(',')
+      # self.cache_dept[locale] = sub_roles.collect{|sr| sr.i18n_variable[locale]}.join(',')
+    end
+    self.cache_dept = dept_hash
+    self.save!
+  end
+
   def self.current
     Thread.current[:user]
   end