diff --git a/lib/orbit_model.rb b/lib/orbit_model.rb
new file mode 100644
index 000000000..9c44a2ba6
--- /dev/null
+++ b/lib/orbit_model.rb
@@ -0,0 +1,4 @@
+require "orbit_model/approval"
+require "orbit_model/language_restrict"
+require "orbit_model/status"
+require "orbit_model/time_frame"
diff --git a/lib/orbit_model/approval.rb b/lib/orbit_model/approval.rb
new file mode 100644
index 000000000..99c27c0d5
--- /dev/null
+++ b/lib/orbit_model/approval.rb
@@ -0,0 +1,64 @@
+module OrbitModel
+
+  module Approval
+
+    def self.included(base)
+      base.extend ClassMethods
+      base.class_eval do
+        field :is_checked, :type => Boolean, :default => false
+        field :is_pending, :type => Boolean, :default => true 
+        field :is_rejected, :type => Boolean, :default => false 
+        field :not_checked_reason
+        class_variable_defined?(:@@can_display) ? \
+        class_variable_set(:@@can_display, class_variable_get(:@@can_display).merge({is_checked: true, is_rejected: false, is_pending: false})) : \
+        class_variable_set(:@@can_display, {is_checked: true, is_rejected: false, is_pending: false})
+        send :include, InstanceMethods
+      end
+    end
+
+    module InstanceMethods
+
+      def de_pending
+        self.is_pending = false
+      end
+
+      def de_pending!
+        de_pending
+        self.save!
+      end
+
+      def is_checked?
+        !self.is_pending && self.is_checked && (self.is_rejected == false)
+      end
+      
+      def is_pending?
+        self.is_pending
+      end
+      
+      def is_rejected?
+        !self.is_pending && self.is_rejected && (self.is_rejected == true)
+      end
+      
+      def proc_check(check,not_pass_info = "")
+        self.is_checked = true
+        if check == "true"
+          self.is_rejected = false
+        elsif check == "false"
+          self.is_rejected = true
+          self.not_checked_reason = not_pass_info
+        end
+      end
+
+    end
+
+    module ClassMethods
+
+      define_method(:can_display) do
+        where(class_variable_get(:@@can_display))
+      end unless method_defined? :can_display
+
+    end
+    
+  end
+
+end
diff --git a/lib/orbit_model/language_restrict.rb b/lib/orbit_model/language_restrict.rb
new file mode 100644
index 000000000..4eebfb723
--- /dev/null
+++ b/lib/orbit_model/language_restrict.rb
@@ -0,0 +1,31 @@
+module OrbitModel
+
+  module LanguageRestrict
+
+    def self.included(base)
+      base.class_eval do
+        scope :available_for_lang, ->(locale){ where("available_for_#{locale}".to_sym => true) }
+        before_save :update_available_language
+        send :include, InstanceMethods
+      end
+    end
+
+    module InstanceMethods
+      
+      private
+  
+      def update_available_language
+        VALID_LOCALES.each  do |locale|
+          if (title_translations[locale].blank? rescue true)
+            self["available_for_#{locale}".to_sym] = false 
+          else
+            self["available_for_#{locale}".to_sym] = true
+          end
+        end
+      end
+      
+    end
+
+  end
+
+end
\ No newline at end of file
diff --git a/lib/orbit_model/status.rb b/lib/orbit_model/status.rb
new file mode 100644
index 000000000..98c8bd041
--- /dev/null
+++ b/lib/orbit_model/status.rb
@@ -0,0 +1,45 @@
+module OrbitModel
+
+  module Status
+
+    def self.included(base)
+      base.extend ClassMethods
+      base.class_eval do
+        field :is_top, :type => Boolean, :default => false 
+        field :is_hot, :type => Boolean, :default => false 
+        field :is_hidden, :type => Boolean, :default => false 
+        # scope :can_display, where(is_hidden: false)
+        self.class_variable_defined?(:@@can_display) ? \
+        self.class_variable_set(:@@can_display, self.class_variable_get(:@@can_display).merge({is_hidden: false})) : \
+        self.class_variable_set(:@@can_display, {is_hidden: false})
+        send :include, InstanceMethods
+      end
+    end
+
+    module InstanceMethods
+
+      def is_top?
+        self.is_top
+      end
+      
+      def is_hot?
+        self.is_hot
+      end
+      
+      def is_hidden?
+        self.is_hidden
+      end
+      
+    end
+
+    module ClassMethods
+
+      define_method(:can_display) do
+        where(class_variable_get(:@@can_display))
+      end unless method_defined? :can_display
+
+    end
+
+  end
+
+end
diff --git a/lib/orbit_model/time_frame.rb b/lib/orbit_model/time_frame.rb
new file mode 100644
index 000000000..c6ce38053
--- /dev/null
+++ b/lib/orbit_model/time_frame.rb
@@ -0,0 +1,33 @@
+module OrbitModel
+
+  module TimeFrame
+
+    def self.included(base)
+      base.class_eval do
+        field :postdate , :type => DateTime
+        field :deadline , :type => DateTime
+        before_save :check_deadline
+        send :include, InstanceMethods
+      end
+    end
+
+    module InstanceMethods
+
+      def is_expired?
+        Date.today > self.deadline ? true : false  rescue false
+        #some dates might sat as nil so rescue false
+      end
+      
+      private
+
+      def check_deadline
+        if(!self.deadline.nil? and (self.deadline < self.postdate ))
+          self.deadline = nil
+        end
+      end
+      
+    end
+
+  end
+
+end
\ No newline at end of file
diff --git a/lib/orbit_tag.rb b/lib/orbit_tag.rb
index 61912534c..600e0da48 100644
--- a/lib/orbit_tag.rb
+++ b/lib/orbit_tag.rb
@@ -1 +1,3 @@
+require "orbit_tag/merging"
 require "orbit_tag/taggable"
+require "orbit_tag/tagging"
diff --git a/lib/orbit_tag/merging.rb b/lib/orbit_tag/merging.rb
new file mode 100644
index 000000000..eddb1db38
--- /dev/null
+++ b/lib/orbit_tag/merging.rb
@@ -0,0 +1,96 @@
+module OrbitTag
+
+  module Merging
+    
+    protected
+
+    def clone_tag(module_tag, parent_id=nil, set_parent=nil)
+      new_tag = module_tag.clone
+      new_tag['_id'] = BSON::ObjectId.new
+      new_tag['module_app_id'] = @module_app.id
+      new_tag['parent_id'] = parent_id 
+      new_tag.save
+      module_tag.update_attribute(:parent_id, new_tag.id) if set_parent
+    end
+
+    def clone_tag_from_default(default_tag)
+      clone_tag(default_tag, default_tag.id)
+    end
+
+    def clone_tag_to_default(default_tag)
+      clone_tag(default_tag, nil, true)
+    end
+
+    def merge_default_tags(name, tag_leases)
+      parent = @module_app.module_tags.create(name_translations: name, is_default: true)
+      lease_by_module_app_id = tag_leases.inject({}) do |sorted, parent|
+        sorted = parent.children.inject(sorted) do |children, lease|
+          module_app_id = lease.module_app_id.to_s
+          if children[module_app_id]
+            children[module_app_id] += [lease]
+          else
+            children[module_app_id] = [lease]
+          end
+          children
+        end
+        sorted
+      end
+      merge_duplicates_in_module(parent, lease_by_module_app_id)
+      tag_leases.each(&:destroy)
+      parent
+    end
+
+    def merge_duplicates_in_module(parent, lease_by_module_app_id)
+      lease_by_module_app_id.each do |module_app_id, leases|
+        if leases.count > 0
+          taggings = leases.map { |l| l.tag.taggings }.flatten
+          module_tag =  merge_tags(parent.name_translations, taggings, module_app_id, true)
+          module_tag.update_attribute(:parent_id, parent.id)
+          leases.each(&:destroy)
+        else
+          leases[0].update_attributes(name_translations: parent.name_translations, is_default: true, parent_id: parent.id) unless leases[0].is_default
+        end
+      end
+    end
+
+    def merge_tags(name, taggings, module_app_id, default=nil)
+      module_app = ModuleApp.find(module_app_id)
+      new_tag = module_app.module_tags.create(name_translations: name, module_app_id: module_app.id, is_default: default)
+      taggings.each do |tagging|
+        tagging.taggable.taggings.create(tag_id: new_tag.tag.id) unless tagging.taggable.taggings.detect{|t| t.tag_id.eql?(new_tag.tag.id)}
+      end
+      new_tag
+    end
+
+    def merge_with_default_tags(name, tag_leases)
+      lease_by_module_app_id = tag_leases.inject({}) do |sorted, lease|
+        module_app_id = lease.is_default ? 'default' : lease.module_app_id.to_s
+        if sorted[module_app_id]
+          sorted[module_app_id] += [lease]
+        else
+          sorted[module_app_id] = [lease]
+        end
+        sorted
+      end
+      if lease_by_module_app_id['default'].count > 1
+        parent = merge_default_tags(name, lease_by_module_app_id['default'])
+      else
+        parent = lease_by_module_app_id['default'][0]
+        parent.update_attributes(name_translations: name)
+      end
+      lease_by_module_app_id.delete('default')
+      lease_by_module_app_id = parent.children.inject(lease_by_module_app_id) do |sorted, lease|
+        module_app_id = lease.module_app_id.to_s
+        if sorted[module_app_id]
+          sorted[module_app_id] += [lease]
+        else
+          sorted[module_app_id] = [lease]
+        end
+        sorted
+      end
+      merge_duplicates_in_module(parent, lease_by_module_app_id)
+    end
+
+  end
+  
+end
diff --git a/lib/orbit_tag/taggable.rb b/lib/orbit_tag/taggable.rb
index 896bf355e..067c853a6 100644
--- a/lib/orbit_tag/taggable.rb
+++ b/lib/orbit_tag/taggable.rb
@@ -1,16 +1,14 @@
 module OrbitTag
   module Taggable
-    extend ActiveSupport::Concern
+
+    def self.included(base)
+      base.extend ClassMethods
+      base.class_eval 'taggable'
+    end
 
     module ClassMethods
 
       def taggable
-        init_tag
-      end
-
-      private
-
-      def init_tag
         class_eval do
           field :tags_to_destroy, type: Array, default: []
           field :tagged_ids, type: Array, default: []
@@ -18,59 +16,63 @@ module OrbitTag
           has_many :taggings, as: :taggable, autosave: true, dependent: :destroy
           accepts_nested_attributes_for :taggings, allow_destroy: true
           after_save :remove_taggings, unless: Proc.new{self.tags_to_destroy.blank?}
+        end
+        send :include, InstanceMethods
+      end
+    end
 
-          def remove_id(id)
-            self.class.without_callback(:save, :after, :remove_taggings) do
-              self.update_attribute(:tagged_ids, self.tagged_ids - [id.to_s])
-            end
+    module InstanceMethods
+
+      def remove_id(id)
+        self.class.without_callback(:save, :after, :remove_taggings) do
+          self.update_attribute(:tagged_ids, self.tagged_ids - [id.to_s])
+        end
+      end
+
+      def sorted_tags
+        if tags.blank?
+          []
+        else
+          tag_array = tags.inject([]){ |result, value|
+            result << [value.name, value]
+          }
+          tag_array.sort.map{|x| x[1] }
+        end
+      end
+
+      def tags
+        self.taggings.blank? ? [] : self.taggings.map{|t| t.tag}.compact
+      end
+
+      def tags=(tag_ids)
+        ids = [tag_ids].flatten
+        tag_ids.delete('')
+        ids = self.taggings.blank? ? [] : self.taggings.map{|t| t.tag.id}
+        tag_ids.each do |tag_id|
+          unless ids.include? tag_id
+            self.taggings.build(tag_id: tag_id)
           end
+        end
+        self.tags_to_destroy = self.taggings.where(:tag_id.in => (ids - tag_ids)).map{|t| t.id}
+      end
 
-          def sorted_tags
-            if tags.blank?
-              []
-            else
-              tag_array = tags.inject([]){ |result, value|
-                result << [value.name, value]
-              }
-              tag_array.sort.map{|x| x[1] }
-            end
-          end
+      def tag_ids
+        self.taggings.blank? ? [] : self.taggings.map{|t| t.tag.id}
+      end
 
-          def tags
-            self.taggings.blank? ? [] : self.taggings.map{|t| t.tag}.compact
-          end
+      def tag_ids=(ids)
+        self.tags = ids
+        ids = [ids].flatten
+        ids.delete('')
+        self.tagged_ids = ids
+      end
 
-          def tags=(tag_ids)
-            ids = [tag_ids].flatten
-            tag_ids.delete('')
-            ids = self.taggings.blank? ? [] : self.taggings.map{|t| t.tag.id}
-            tag_ids.each do |tag_id|
-              unless ids.include? tag_id
-                self.taggings.build(tag_id: tag_id)
-              end
-            end
-            self.tags_to_destroy = self.taggings.where(:tag_id.in => (ids - tag_ids)).map{|t| t.id}
-          end
+      private
 
-          def tag_ids
-            self.taggings.blank? ? [] : self.taggings.map{|t| t.tag.id}
-          end
-
-          def tag_ids=(ids)
-            self.tags = ids
-            ids = [ids].flatten
-            ids.delete('')
-            self.tagged_ids = ids
-          end
-
-          private
-
-          def remove_taggings
-            self.taggings.where(:_id.in => self.tags_to_destroy).destroy
-            self.class.without_callback(:save, :after, :remove_taggings) do
-              self.update_attribute(:tags_to_destroy, [])
-            end
-          end
+      def remove_taggings
+        self.taggings.where(:_id.in => self.tags_to_destroy).destroy
+        self.class.without_callback(:save, :after, :remove_taggings) do
+          self.update_attribute(:tags_to_destroy, [])
         end
       end
 
@@ -78,104 +80,4 @@ module OrbitTag
 
   end
 
-  module Tagging
-    def get_tags
-      @module_app.tags
-    end
-
-    def get_default_tags
-      Tag.where(is_default: true)
-    end
-  end
-
-  module Merging
-    protected
-
-    def clone_tag(module_tag, parent_id=nil, set_parent=nil)
-      new_tag = module_tag.clone
-      new_tag['_id'] = BSON::ObjectId.new
-      new_tag['module_app_id'] = @module_app.id
-      new_tag['parent_id'] = parent_id 
-      new_tag.save
-      module_tag.update_attribute(:parent_id, new_tag.id) if set_parent
-    end
-
-    def clone_tag_from_default(default_tag)
-      clone_tag(default_tag, default_tag.id)
-    end
-
-    def clone_tag_to_default(default_tag)
-      clone_tag(default_tag, nil, true)
-    end
-
-    def merge_default_tags(name, tag_leases)
-      parent = @module_app.module_tags.create(name_translations: name, is_default: true)
-      lease_by_module_app_id = tag_leases.inject({}) do |sorted, parent|
-        sorted = parent.children.inject(sorted) do |children, lease|
-          module_app_id = lease.module_app_id.to_s
-          if children[module_app_id]
-            children[module_app_id] += [lease]
-          else
-            children[module_app_id] = [lease]
-          end
-          children
-        end
-        sorted
-      end
-      merge_duplicates_in_module(parent, lease_by_module_app_id)
-      tag_leases.each(&:destroy)
-      parent
-    end
-
-    def merge_duplicates_in_module(parent, lease_by_module_app_id)
-      lease_by_module_app_id.each do |module_app_id, leases|
-        if leases.count > 0
-          taggings = leases.map { |l| l.tag.taggings }.flatten
-          module_tag =  merge_tags(parent.name_translations, taggings, module_app_id, true)
-          module_tag.update_attribute(:parent_id, parent.id)
-          leases.each(&:destroy)
-        else
-          leases[0].update_attributes(name_translations: parent.name_translations, is_default: true, parent_id: parent.id) unless leases[0].is_default
-        end
-      end
-    end
-
-    def merge_tags(name, taggings, module_app_id, default=nil)
-      module_app = ModuleApp.find(module_app_id)
-      new_tag = module_app.module_tags.create(name_translations: name, module_app_id: module_app.id, is_default: default)
-      taggings.each do |tagging|
-        tagging.taggable.taggings.create(tag_id: new_tag.tag.id) unless tagging.taggable.taggings.detect{|t| t.tag_id.eql?(new_tag.tag.id)}
-      end
-      new_tag
-    end
-
-    def merge_with_default_tags(name, tag_leases)
-      lease_by_module_app_id = tag_leases.inject({}) do |sorted, lease|
-        module_app_id = lease.is_default ? 'default' : lease.module_app_id.to_s
-        if sorted[module_app_id]
-          sorted[module_app_id] += [lease]
-        else
-          sorted[module_app_id] = [lease]
-        end
-        sorted
-      end
-      if lease_by_module_app_id['default'].count > 1
-        parent = merge_default_tags(name, lease_by_module_app_id['default'])
-      else
-        parent = lease_by_module_app_id['default'][0]
-        parent.update_attributes(name_translations: name)
-      end
-      lease_by_module_app_id.delete('default')
-      lease_by_module_app_id = parent.children.inject(lease_by_module_app_id) do |sorted, lease|
-        module_app_id = lease.module_app_id.to_s
-        if sorted[module_app_id]
-          sorted[module_app_id] += [lease]
-        else
-          sorted[module_app_id] = [lease]
-        end
-        sorted
-      end
-      merge_duplicates_in_module(parent, lease_by_module_app_id)
-    end
-  end
 end
diff --git a/lib/orbit_tag/tagging.rb b/lib/orbit_tag/tagging.rb
new file mode 100644
index 000000000..8068b6dda
--- /dev/null
+++ b/lib/orbit_tag/tagging.rb
@@ -0,0 +1,15 @@
+module OrbitTag
+
+  module Tagging
+
+    def get_tags
+      @module_app.tags
+    end
+
+    def get_default_tags
+      Tag.where(is_default: true)
+    end
+
+  end
+  
+end
diff --git a/vendor/built_in_modules/announcement/app/models/bulletin.rb b/vendor/built_in_modules/announcement/app/models/bulletin.rb
index e84b020fc..afa5270cb 100644
--- a/vendor/built_in_modules/announcement/app/models/bulletin.rb
+++ b/vendor/built_in_modules/announcement/app/models/bulletin.rb
@@ -10,9 +10,11 @@ class Bulletin
   BelongsToCategory =  :bulletin_category
   include OrbitCoreLib::BelongsToCategoryMayDisable
   include OrbitCoreLib::Preview
-
+  include OrbitModel::Approval
+  include OrbitModel::LanguageRestrict
+  include OrbitModel::Status
+  include OrbitModel::TimeFrame
   include OrbitTag::Taggable
-  taggable
 
   is_impressionable :counter_cache => { :column_name => :view_count }
 
@@ -20,29 +22,12 @@ class Bulletin
   field :subtitle, localize: true
   field :text, localize: true
 
-  # has_and_belongs_to_many :tags, :class_name => "AnnouncementTag"
-
-  field :postdate , :type => DateTime
-  field :deadline , :type => DateTime
-  # field :url
-
   field :create_user_id
   field :update_user_id, :class_name => "User"
   
-  field :is_top, :type => Boolean, :default => false
-  field :is_hot, :type => Boolean, :default => false
-  field :is_hidden, :type => Boolean, :default => false
-  field :is_checked, :type => Boolean, :default => false
-  field :is_pending, :type => Boolean, :default => true 
-  field :is_rejected, :type => Boolean, :default => false 
   field :view_count, :type => Integer, :default => 0
   
-  field :not_checked_reason
-  
   field :public, :type => Boolean, :default => true
-  
-  scope :can_display, where(is_checked: true, is_rejected: false, is_pending: false)
-  scope :available_for_lang, ->(locale){ where("available_for_#{locale}".to_sym => true) }
 
   mount_uploader :image, ImageUploader
 
@@ -54,7 +39,7 @@ class Bulletin
   
   validates :title, :at_least_one => true
 
-  before_save :check_deadline, :update_avliable_language#, :clean_values#, :save_bulletin_links, :save_bulletin_files
+  #before_save :clean_values, :save_bulletin_links, :save_bulletin_files
 
   searchable do
     text :titles do
@@ -88,25 +73,6 @@ class Bulletin
       Item.first(conditions:{name: 'announcement'})
   end  
 
-  def proc_check(check,not_pass_info = "")
-    self.is_checked = true
-      if check =="true"
-        self.is_rejected = false
-      elsif check == "false"
-        self.is_rejected = true
-        self.not_checked_reason = not_pass_info
-      end
-  end
-
-  def de_pending
-    self.is_pending = false
-  end
-
-  def de_pending!
-    de_pending
-    self.save!
-  end
-
   def enabled_for_lang(lang)
     eval("self.available_for_#{lang}")
   end
@@ -146,35 +112,6 @@ class Bulletin
    
   end
 
-  def is_expired?
-    Date.today > self.deadline ? true : false  rescue false
-    #some dates might sat as nil so rescue false
-  end
-
-  def is_top?
-    self.is_top
-  end
-  
-  def is_hot?
-    self.is_hot
-  end
-  
-  def is_hidden?
-    self.is_hidden
-  end
-
-  def is_checked?
-    !self.is_pending && self.is_checked && (self.is_rejected == false)
-  end
-  
-  def is_pending?
-    self.is_pending
-  end
-  
-  def is_rejected?
-    !self.is_pending && self.is_rejected && (self.is_rejected == true)
-  end
-  
   
   def save_bulletin_links
 	self.bulletin_links.each do |t|
@@ -217,22 +154,6 @@ class Bulletin
 
 
   protected
-  
-  def check_deadline
-    if(!self.deadline.nil? and (self.deadline < self.postdate ))
-      self.deadline = nil
-    end
-  end
-  
-  def update_avliable_language
-    VALID_LOCALES.each  do |locale|
-      if (title_translations[locale].blank? rescue true)
-        self["available_for_#{locale}".to_sym] = false 
-      else
-        self["available_for_#{locale}".to_sym] = true
-      end
-    end
-  end
 
   # def clean_values
   #   self.bulletin_links.each do |link|
diff --git a/vendor/built_in_modules/faq/app/models/qa.rb b/vendor/built_in_modules/faq/app/models/qa.rb
index 1a99c3a24..caca89f71 100644
--- a/vendor/built_in_modules/faq/app/models/qa.rb
+++ b/vendor/built_in_modules/faq/app/models/qa.rb
@@ -5,8 +5,9 @@ class Qa
   include Mongoid::Timestamps
   include Mongoid::MultiParameterAttributes
 
+  include OrbitModel::LanguageRestrict
+  include OrbitModel::Status
   include OrbitTag::Taggable
-  taggable
   
   scope :available_for_lang, ->(locale){ where("available_for_#{locale}".to_sym => true) }
 
@@ -18,12 +19,6 @@ class Qa
 
   field :create_user_id
   field :update_user_id
-  
-  field :is_top, :type => Boolean, :default => false 
-  field :is_hot, :type => Boolean, :default => false 
-  field :is_hidden, :type => Boolean, :default => false 
-
-  scope :can_display,where(is_hidden: false)
 
   has_many :qa_links, :autosave => true, :dependent => :destroy
   has_many :qa_files, :autosave => true, :dependent => :destroy
@@ -33,7 +28,7 @@ class Qa
   
   belongs_to :qa_category
   
-  before_save :update_avliable_language, :clean_values
+  before_save :clean_values
 
   validates :question, :at_least_one => true
 
@@ -59,20 +54,6 @@ class Qa
 
   end
 
-  def is_top?
-    self.is_top
-  end 
-  
-  def update_avliable_language
-    VALID_LOCALES.each  do |locale|
-      if (question_translations[locale].blank? rescue true)
-        self["available_for_#{locale}".to_sym] = false 
-      else
-        self["available_for_#{locale}".to_sym] = true
-      end
-    end
-  end
-
   protected
 
   def qa_category_with_title
diff --git a/vendor/built_in_modules/personal_book/app/models/writing_book.rb b/vendor/built_in_modules/personal_book/app/models/writing_book.rb
index e6c59c8b6..e273746f7 100644
--- a/vendor/built_in_modules/personal_book/app/models/writing_book.rb
+++ b/vendor/built_in_modules/personal_book/app/models/writing_book.rb
@@ -4,10 +4,10 @@ class WritingBook
   include Mongoid::Document
   include Mongoid::Timestamps
   include Mongoid::MultiParameterAttributes
-  include OrbitTag::Taggable
-  taggable
   
-  # scope :available_for_lang, ->(locale){ where("available_for_#{locale}".to_sym => true) }
+  include OrbitModel::LanguageRestrict
+  include OrbitModel::Status
+  include OrbitTag::Taggable
   
   LANGUAGE_TYPES = [ "English", "Chinese" ]
 
@@ -37,15 +37,11 @@ class WritingBook
   field :create_user_id, :type => BSON::ObjectId
   field :update_user_id, :type => BSON::ObjectId
   
-  # field :is_top, :type => Boolean, :default => false 
-  # field :is_hot, :type => Boolean, :default => false 
-  # field :is_hidden, :type => Boolean, :default => false 
-  
   has_many :writing_book_files, :autosave => true, :dependent => :destroy
   
   accepts_nested_attributes_for :writing_book_files, :allow_destroy => true
   
-  # before_save :update_avliable_language, :clean_checkboxs
+  # before_save :clean_checkboxs
 
   validates :paper_title, :at_least_one => true
 
@@ -75,20 +71,6 @@ class WritingBook
 	where( :is_hidden => false ).desc(:is_top, :created_at)
 
   end
-
-  def is_top?
-    self.is_top
-  end 
-  
-  def update_avliable_language
-    VALID_LOCALES.each  do |locale|
-      if (title_translations[locale].blank? rescue true)
-        self["available_for_#{locale}".to_sym] = false 
-      else
-        self["available_for_#{locale}".to_sym] = true
-      end
-    end
-  end
   
   def save_writing_book_files
 	self.writing_book_files.each do |t|
diff --git a/vendor/built_in_modules/personal_conference/app/models/writing_conference.rb b/vendor/built_in_modules/personal_conference/app/models/writing_conference.rb
index c23b75533..b7504dbab 100644
--- a/vendor/built_in_modules/personal_conference/app/models/writing_conference.rb
+++ b/vendor/built_in_modules/personal_conference/app/models/writing_conference.rb
@@ -3,10 +3,9 @@ class WritingConference
   include Mongoid::Timestamps
   include Mongoid::MultiParameterAttributes
 
+  include OrbitModel::LanguageRestrict
+  include OrbitModel::Status
   include OrbitTag::Taggable
-  taggable
-
-  # scope :available_for_lang, ->(locale){ where("available_for_#{locale}".to_sym => true) }
 
   LANGUAGE_TYPES = [ "English", "Chinese" ]
 
@@ -33,14 +32,10 @@ class WritingConference
   field :create_user_id, :type => BSON::ObjectId
   field :update_user_id, :type => BSON::ObjectId
 
-  # field :is_top, :type => Boolean, :default => false 
-  # field :is_hot, :type => Boolean, :default => false 
-  # field :is_hidden, :type => Boolean, :default => false 
-
   has_many :writing_conference_files, :autosave => true, :dependent => :destroy
   accepts_nested_attributes_for :writing_conference_files, :allow_destroy => true
 
-  # before_save :update_avliable_language, :clean_checkboxs
+  # before_save :clean_checkboxs
 
   validates :paper_title, :at_least_one => true
   before_validation :add_http
@@ -78,20 +73,6 @@ class WritingConference
     where( :is_hidden => false ).desc(:is_top, :created_at)
   end
 
-  def is_top?
-    self.is_top
-  end
-
-  def update_avliable_language
-    VALID_LOCALES.each  do |locale|
-      if (title_translations[locale].blank? rescue true)
-        self["available_for_#{locale}".to_sym] = false 
-      else
-        self["available_for_#{locale}".to_sym] = true
-      end
-    end
-  end
-
   def save_writing_conference_files
     self.writing_conference_files.each do |t|
       if t.should_destroy
diff --git a/vendor/built_in_modules/personal_diploma/app/models/diploma.rb b/vendor/built_in_modules/personal_diploma/app/models/diploma.rb
index 041fbc49b..8cd4c5ce6 100644
--- a/vendor/built_in_modules/personal_diploma/app/models/diploma.rb
+++ b/vendor/built_in_modules/personal_diploma/app/models/diploma.rb
@@ -5,10 +5,9 @@ class Diploma
   include Mongoid::Timestamps
   include Mongoid::MultiParameterAttributes
 
+  include OrbitModel::LanguageRestrict
+  include OrbitModel::Status
   include OrbitTag::Taggable
-  taggable
-  
-  # scope :available_for_lang, ->(locale){ where("available_for_#{locale}".to_sym => true) }
   
   LANGUAGE_TYPES = [ "English", "Chinese" ]
 
@@ -18,8 +17,6 @@ class Diploma
   field :department, localize: true
   field :degree, localize: true
   
-  # has_and_belongs_to_many :tags, :class_name => "PersonalDiplomaTag"
-  
   field :year
   field :language
   field :keywords
@@ -30,12 +27,8 @@ class Diploma
   field :create_user_id, :type => BSON::ObjectId
   field :update_user_id, :type => BSON::ObjectId
   
-  # field :is_top, :type => Boolean, :default => false 
-  # field :is_hot, :type => Boolean, :default => false 
-  # field :is_hidden, :type => Boolean, :default => false 
   
-  
-  # before_save :update_avliable_language, :clean_checkboxs
+  # before_save :clean_checkboxs
 
   validates :school_name, :at_least_one => true
 
@@ -50,20 +43,6 @@ class Diploma
 
   end
 
-  def is_top?
-    self.is_top
-  end 
-  
-  def update_avliable_language
-    VALID_LOCALES.each  do |locale|
-      if (title_translations[locale].blank? rescue true)
-        self["available_for_#{locale}".to_sym] = false 
-      else
-        self["available_for_#{locale}".to_sym] = true
-      end
-    end
-  end
-
   protected
 
   def add_http
diff --git a/vendor/built_in_modules/personal_experience/app/models/experience.rb b/vendor/built_in_modules/personal_experience/app/models/experience.rb
index 29deafb4b..fda0ab8f5 100644
--- a/vendor/built_in_modules/personal_experience/app/models/experience.rb
+++ b/vendor/built_in_modules/personal_experience/app/models/experience.rb
@@ -5,10 +5,9 @@ class Experience
   include Mongoid::Timestamps
   include Mongoid::MultiParameterAttributes
 
+  include OrbitModel::LanguageRestrict
+  include OrbitModel::Status
   include OrbitTag::Taggable
-  taggable
-  
-  # scope :available_for_lang, ->(locale){ where("available_for_#{locale}".to_sym => true) }
   
   LANGUAGE_TYPES = [ "English", "Chinese" ]
 
@@ -30,12 +29,8 @@ class Experience
   field :create_user_id, :type => BSON::ObjectId
   field :update_user_id, :type => BSON::ObjectId
   
-  # field :is_top, :type => Boolean, :default => false 
-  # field :is_hot, :type => Boolean, :default => false 
-  # field :is_hidden, :type => Boolean, :default => false 
   
-  
-  # before_save :update_avliable_language, :clean_checkboxs
+  # before_save :clean_checkboxs
 
   validates :organizationt_title, :at_least_one => true
 
@@ -64,20 +59,6 @@ class Experience
 
   end
 
-  def is_top?
-    self.is_top
-  end 
-  
-  def update_avliable_language
-    VALID_LOCALES.each  do |locale|
-      if (title_translations[locale].blank? rescue true)
-        self["available_for_#{locale}".to_sym] = false 
-      else
-        self["available_for_#{locale}".to_sym] = true
-      end
-    end
-  end
-
   protected
 
   def add_http
diff --git a/vendor/built_in_modules/personal_honor/app/models/honor.rb b/vendor/built_in_modules/personal_honor/app/models/honor.rb
index 67f9f5f5f..c44f5aee4 100644
--- a/vendor/built_in_modules/personal_honor/app/models/honor.rb
+++ b/vendor/built_in_modules/personal_honor/app/models/honor.rb
@@ -5,10 +5,9 @@ class Honor
   include Mongoid::Timestamps
   include Mongoid::MultiParameterAttributes
 
+  include OrbitModel::LanguageRestrict
+  include OrbitModel::Status
   include OrbitTag::Taggable
-  taggable
-  
-  # scope :available_for_lang, ->(locale){ where("available_for_#{locale}".to_sym => true) }
   
   LANGUAGE_TYPES = [ "English", "Chinese" ]
 
@@ -28,11 +27,7 @@ class Honor
   field :create_user_id, :type => BSON::ObjectId
   field :update_user_id, :type => BSON::ObjectId
   
-  # field :is_top, :type => Boolean, :default => false 
-  # field :is_hot, :type => Boolean, :default => false 
-  # field :is_hidden, :type => Boolean, :default => false 
-  
-  # before_save :update_avliable_language, :clean_checkboxs
+  # before_save :clean_checkboxs
 
   validates_presence_of :award_name
 
@@ -61,20 +56,6 @@ class Honor
 
   end
 
-  def is_top?
-    self.is_top
-  end 
-  
-  def update_avliable_language
-    VALID_LOCALES.each  do |locale|
-      if (title_translations[locale].blank? rescue true)
-        self["available_for_#{locale}".to_sym] = false 
-      else
-        self["available_for_#{locale}".to_sym] = true
-      end
-    end
-  end
-
   protected
 
   def add_http
diff --git a/vendor/built_in_modules/personal_journal/app/models/writing_journal.rb b/vendor/built_in_modules/personal_journal/app/models/writing_journal.rb
index c4739f6bc..ab54d055b 100644
--- a/vendor/built_in_modules/personal_journal/app/models/writing_journal.rb
+++ b/vendor/built_in_modules/personal_journal/app/models/writing_journal.rb
@@ -3,8 +3,9 @@ class WritingJournal
   include Mongoid::Timestamps
   include Mongoid::MultiParameterAttributes
 
+  include OrbitModel::LanguageRestrict
+  include OrbitModel::Status
   include OrbitTag::Taggable
-  taggable
 
   LANGUAGE_TYPES = [ "English", "Chinese" ]
 
@@ -79,20 +80,6 @@ class WritingJournal
     where( :is_hidden => false ).desc(:is_top, :created_at)
   end
 
-  def is_top?
-    self.is_top
-  end
-
-  def update_avliable_language
-    VALID_LOCALES.each  do |locale|
-      if (title_translations[locale].blank? rescue true)
-        self["available_for_#{locale}".to_sym] = false 
-      else
-        self["available_for_#{locale}".to_sym] = true
-      end
-    end
-  end
-
   def save_writing_journal_files
     self.writing_journal_files.each do |t|
       if t.should_destroy
diff --git a/vendor/built_in_modules/personal_lab/app/models/lab.rb b/vendor/built_in_modules/personal_lab/app/models/lab.rb
index 9d6b48097..e924e1ae1 100644
--- a/vendor/built_in_modules/personal_lab/app/models/lab.rb
+++ b/vendor/built_in_modules/personal_lab/app/models/lab.rb
@@ -5,10 +5,9 @@ class Lab
   include Mongoid::Timestamps
   include Mongoid::MultiParameterAttributes
 
+  include OrbitModel::LanguageRestrict
+  include OrbitModel::Status
   include OrbitTag::Taggable
-  taggable
-  
-  # scope :available_for_lang, ->(locale){ where("available_for_#{locale}".to_sym => true) }
   
   LANGUAGE_TYPES = [ "English", "Chinese" ]
 
@@ -31,15 +30,11 @@ class Lab
   field :create_user_id, :type => BSON::ObjectId
   field :update_user_id, :type => BSON::ObjectId
   
-  # field :is_top, :type => Boolean, :default => false 
-  # field :is_hot, :type => Boolean, :default => false 
-  # field :is_hidden, :type => Boolean, :default => false 
-  
   has_many :lab_files, :autosave => true, :dependent => :destroy
   
   accepts_nested_attributes_for :lab_files, :allow_destroy => true
   
-  # before_save :update_avliable_language, :clean_checkboxs
+  # before_save :clean_checkboxs
 
   validates :lab_title, :at_least_one => true
 
@@ -69,20 +64,6 @@ class Lab
 	where( :is_hidden => false ).desc(:is_top, :created_at)
 
   end
-
-  def is_top?
-    self.is_top
-  end 
-  
-  def update_avliable_language
-    VALID_LOCALES.each  do |locale|
-      if (title_translations[locale].blank? rescue true)
-        self["available_for_#{locale}".to_sym] = false 
-      else
-        self["available_for_#{locale}".to_sym] = true
-      end
-    end
-  end
   
   def save_lab_files
 	self.lab_files.each do |t|
diff --git a/vendor/built_in_modules/personal_patent/app/models/writing_patent.rb b/vendor/built_in_modules/personal_patent/app/models/writing_patent.rb
index 72c876227..f6c5ebf3b 100644
--- a/vendor/built_in_modules/personal_patent/app/models/writing_patent.rb
+++ b/vendor/built_in_modules/personal_patent/app/models/writing_patent.rb
@@ -5,10 +5,9 @@ class WritingPatent
   include Mongoid::Timestamps
   include Mongoid::MultiParameterAttributes
 
+  include OrbitModel::LanguageRestrict
+  include OrbitModel::Status
   include OrbitTag::Taggable
-  taggable
-  
-  # scope :available_for_lang, ->(locale){ where("available_for_#{locale}".to_sym => true) }
   
   LANGUAGE_TYPES = [ "English", "Chinese" ]
 
@@ -31,15 +30,11 @@ class WritingPatent
   field :create_user_id, :type => BSON::ObjectId
   field :update_user_id, :type => BSON::ObjectId
   
-  # field :is_top, :type => Boolean, :default => false 
-  # field :is_hot, :type => Boolean, :default => false 
-  # field :is_hidden, :type => Boolean, :default => false 
-  
   has_many :writing_patent_files, :autosave => true, :dependent => :destroy
   
   accepts_nested_attributes_for :writing_patent_files, :allow_destroy => true
   
-  # before_save :update_avliable_language, :clean_checkboxs
+  # before_save :clean_checkboxs
 
   validates :patent_title, :at_least_one => true
 
@@ -69,20 +64,6 @@ class WritingPatent
 	where( :is_hidden => false ).desc(:is_top, :created_at)
 
   end
-
-  def is_top?
-    self.is_top
-  end 
-  
-  def update_avliable_language
-    VALID_LOCALES.each  do |locale|
-      if (title_translations[locale].blank? rescue true)
-        self["available_for_#{locale}".to_sym] = false 
-      else
-        self["available_for_#{locale}".to_sym] = true
-      end
-    end
-  end
   
   def save_writing_patent_files
 	self.writing_patent_files.each do |t|
diff --git a/vendor/built_in_modules/personal_project/app/models/project.rb b/vendor/built_in_modules/personal_project/app/models/project.rb
index 1b0b86059..bbe52c264 100644
--- a/vendor/built_in_modules/personal_project/app/models/project.rb
+++ b/vendor/built_in_modules/personal_project/app/models/project.rb
@@ -5,10 +5,9 @@ class Project
   include Mongoid::Timestamps
   include Mongoid::MultiParameterAttributes
 
+  include OrbitModel::LanguageRestrict
+  include OrbitModel::Status
   include OrbitTag::Taggable
-  taggable
-  
-  # scope :available_for_lang, ->(locale){ where("available_for_#{locale}".to_sym => true) }
   
   LANGUAGE_TYPES = [ "English", "Chinese" ]
 
@@ -33,15 +32,11 @@ class Project
   field :create_user_id, :type => BSON::ObjectId
   field :update_user_id, :type => BSON::ObjectId
   
-  # field :is_top, :type => Boolean, :default => false 
-  # field :is_hot, :type => Boolean, :default => false 
-  # field :is_hidden, :type => Boolean, :default => false 
-  
   has_many :project_files, :autosave => true, :dependent => :destroy
   
   accepts_nested_attributes_for :project_files, :allow_destroy => true
   
-  # before_save :update_avliable_language, :clean_checkboxs
+  # before_save :clean_checkboxs
 
   validates :project_title, :at_least_one => true
 
@@ -71,20 +66,6 @@ class Project
 	where( :is_hidden => false ).desc(:is_top, :created_at)
 
   end
-
-  def is_top?
-    self.is_top
-  end 
-  
-  def update_avliable_language
-    VALID_LOCALES.each  do |locale|
-      if (title_translations[locale].blank? rescue true)
-        self["available_for_#{locale}".to_sym] = false 
-      else
-        self["available_for_#{locale}".to_sym] = true
-      end
-    end
-  end
   
   def save_project_files
 	self.project_files.each do |t|
diff --git a/vendor/built_in_modules/personal_research/app/models/research.rb b/vendor/built_in_modules/personal_research/app/models/research.rb
index 4c7194578..f9ad4d6b4 100644
--- a/vendor/built_in_modules/personal_research/app/models/research.rb
+++ b/vendor/built_in_modules/personal_research/app/models/research.rb
@@ -5,10 +5,9 @@ class Research
   include Mongoid::Timestamps
   include Mongoid::MultiParameterAttributes
 
+  include OrbitModel::LanguageRestrict
+  include OrbitModel::Status
   include OrbitTag::Taggable
-  taggable
-  
-  # scope :available_for_lang, ->(locale){ where("available_for_#{locale}".to_sym => true) }
   
   LANGUAGE_TYPES = [ "English", "Chinese" ]
 
@@ -28,15 +27,11 @@ class Research
   field :create_user_id, :type => BSON::ObjectId
   field :update_user_id, :type => BSON::ObjectId
   
-  # field :is_top, :type => Boolean, :default => false 
-  # field :is_hot, :type => Boolean, :default => false 
-  # field :is_hidden, :type => Boolean, :default => false 
-  
   has_many :research_files, :autosave => true, :dependent => :destroy
   
   accepts_nested_attributes_for :research_files, :allow_destroy => true
   
-  # before_save :update_avliable_language, :clean_checkboxs
+  # before_save :clean_checkboxs
 
   validates :research_title, :at_least_one => true
 
@@ -66,20 +61,6 @@ class Research
 	where( :is_hidden => false ).desc(:is_top, :created_at)
 
   end
-
-  def is_top?
-    self.is_top
-  end 
-  
-  def update_avliable_language
-    VALID_LOCALES.each  do |locale|
-      if (title_translations[locale].blank? rescue true)
-        self["available_for_#{locale}".to_sym] = false 
-      else
-        self["available_for_#{locale}".to_sym] = true
-      end
-    end
-  end
   
   def save_research_files
 	self.research_files.each do |t|
diff --git a/vendor/built_in_modules/web_resource/app/models/web_link.rb b/vendor/built_in_modules/web_resource/app/models/web_link.rb
index 3028cae30..2c3a01901 100644
--- a/vendor/built_in_modules/web_resource/app/models/web_link.rb
+++ b/vendor/built_in_modules/web_resource/app/models/web_link.rb
@@ -5,10 +5,9 @@ class WebLink
   include Mongoid::Timestamps
   include Mongoid::MultiParameterAttributes
 
+  include OrbitModel::LanguageRestrict
+  include OrbitModel::Status
   include OrbitTag::Taggable
-  taggable
-  
-  scope :available_for_lang, ->(locale){ where("available_for_#{locale}".to_sym => true) }
 
   field :title, localize: true
   field :context, localize: true
@@ -19,13 +18,9 @@ class WebLink
   field :create_user_id
   field :update_user_id
   
-  field :is_top, :type => Boolean, :default => false 
-  field :is_hot, :type => Boolean, :default => false 
-  field :is_hidden, :type => Boolean, :default => false 
-  
   belongs_to :web_link_category
   
-  before_save :update_avliable_language, :clean_tags
+  before_save :clean_tags
 
   validates :title, :at_least_one => true
 
@@ -53,20 +48,6 @@ class WebLink
 
   end
 
-  def is_top?
-    self.is_top
-  end 
-  
-  def update_avliable_language
-    VALID_LOCALES.each  do |locale|
-      if (title_translations[locale].blank? rescue true)
-        self["available_for_#{locale}".to_sym] = false 
-      else
-        self["available_for_#{locale}".to_sym] = true
-      end
-    end
-  end
-
   protected
 
   def add_http