diff --git a/lib/orbit_model/approval.rb b/lib/orbit_model/approval.rb
index 99c27c0d5..5f5815417 100644
--- a/lib/orbit_model/approval.rb
+++ b/lib/orbit_model/approval.rb
@@ -9,9 +9,12 @@ module OrbitModel
         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})
+        query = {type: 'where', conditions: {is_checked: true, is_rejected: false, is_pending: false}}
+        if class_variable_defined?(:@@can_display)
+          class_variable_set(:@@can_display, (class_variable_get(:@@can_display) << query))
+        else
+          class_variable_set(:@@can_display, [query])
+        end
         send :include, InstanceMethods
       end
     end
@@ -54,9 +57,14 @@ module OrbitModel
     module ClassMethods
 
       define_method(:can_display) do
-        where(class_variable_get(:@@can_display))
+        final_query = class_variable_get(:@@can_display).inject('') do |result, query_hash|
+          result << "." if result.present?
+          result << "#{query_hash[:type]}(#{query_hash[:conditions]})"
+          result
+        end
+        eval(final_query)
       end unless method_defined? :can_display
-
+      
     end
     
   end
diff --git a/lib/orbit_model/status.rb b/lib/orbit_model/status.rb
index 2b2fed7ae..672ebb478 100644
--- a/lib/orbit_model/status.rb
+++ b/lib/orbit_model/status.rb
@@ -8,9 +8,12 @@ module OrbitModel
         field :is_top, :type => Boolean, :default => false 
         field :is_hot, :type => Boolean, :default => false 
         field :is_hidden, :type => Boolean, :default => 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})
+        query = {type: 'where', conditions: {is_hidden: false}}
+        if class_variable_defined?(:@@can_display)
+          class_variable_set(:@@can_display, (class_variable_get(:@@can_display) << query))
+        else
+          class_variable_set(:@@can_display, [query])
+        end
         send :include, InstanceMethods
       end
     end
@@ -34,7 +37,12 @@ module OrbitModel
     module ClassMethods
 
       define_method(:can_display) do
-        where(class_variable_get(:@@can_display))
+        final_query = class_variable_get(:@@can_display).inject('') do |result, query_hash|
+          result << "." if result.present?
+          result << "#{query_hash[:type]}(#{query_hash[:conditions]})"
+          result
+        end
+        eval(final_query)
       end unless method_defined? :can_display
 
     end
diff --git a/lib/orbit_model/time_frame.rb b/lib/orbit_model/time_frame.rb
index 7e87a3c1b..aa5f0256f 100644
--- a/lib/orbit_model/time_frame.rb
+++ b/lib/orbit_model/time_frame.rb
@@ -3,10 +3,17 @@ module OrbitModel
   module TimeFrame
 
     def self.included(base)
+      base.extend ClassMethods
       base.class_eval do
         field :postdate , :type => DateTime
         field :deadline , :type => DateTime
         before_save :check_deadline
+        query = {type: 'any_of', conditions: "{deadline: nil, :postdate.lte => Time.now} , {:deadline.gte => Time.now, :postdate.lte => Time.now}"}
+        if class_variable_defined?(:@@can_display)
+          class_variable_set(:@@can_display, (class_variable_get(:@@can_display) << query))
+        else
+          class_variable_set(:@@can_display, [query])
+        end
         send :include, InstanceMethods
       end
     end
@@ -27,6 +34,19 @@ module OrbitModel
       
     end
 
+    module ClassMethods
+
+      define_method(:can_display) do
+        final_query = class_variable_get(:@@can_display).inject('') do |result, query_hash|
+          result << "." if result.present?
+          result << "#{query_hash[:type]}(#{query_hash[:conditions]})"
+          result
+        end
+        eval(final_query)
+      end unless method_defined? :can_display
+
+    end
+
   end
 
 end
\ No newline at end of file
diff --git a/vendor/built_in_modules/announcement/app/controllers/panel/announcement/front_end/bulletins_controller.rb b/vendor/built_in_modules/announcement/app/controllers/panel/announcement/front_end/bulletins_controller.rb
index 07bf4f032..c4ccb351a 100644
--- a/vendor/built_in_modules/announcement/app/controllers/panel/announcement/front_end/bulletins_controller.rb
+++ b/vendor/built_in_modules/announcement/app/controllers/panel/announcement/front_end/bulletins_controller.rb
@@ -43,15 +43,15 @@ class Panel::Announcement::FrontEnd::BulletinsController < OrbitWidgetController
     else
       date_now = Time.now
       if !params[:category_id].blank? && !params[:tag_id].blank?
-        @bulletins = Bulletin.available_for_lang(I18n.locale).can_display.where(:category_id => params[:category_id], :tagged_ids => params[:tag_id]).any_of( {deadline: nil,:postdate.lte => date_now} , {:deadline.gte => date_now,:postdate.lte => date_now} ).desc( :is_top, :postdate).page( params[:page_main]).per(@page_num)
+        @bulletins = Bulletin.available_for_lang(I18n.locale).can_display.where(:category_id => params[:category_id], :tagged_ids => params[:tag_id]).desc( :is_top, :postdate).page( params[:page_main]).per(@page_num)
         @current_category = BulletinCategory.from_id(params[:category_id]) rescue nil
       elsif !params[:category_id].blank?
-        @bulletins = Bulletin.all.available_for_lang(I18n.locale).can_display.where(:category_id => params[:category_id]).any_of( {deadline: nil,:postdate.lte => date_now} , {:deadline.gte => date_now,:postdate.lte => date_now} ).desc( :is_top, :postdate).page( params[:page_main]).per(@page_num)
+        @bulletins = Bulletin.all.available_for_lang(I18n.locale).can_display.where(:category_id => params[:category_id]).desc( :is_top, :postdate).page( params[:page_main]).per(@page_num)
         @current_category = BulletinCategory.from_id(params[:category_id]) rescue nil
       elsif !params[:tag_id].blank?
-        @bulletins = Bulletin.available_for_lang(I18n.locale).can_display.where(:tagged_ids => params[:tag_id]).any_of( {deadline: nil,:postdate.lte => date_now} , {:deadline.gte => date_now,:postdate.lte => date_now} ).desc( :is_top, :postdate).page( params[:page_main]).per(@page_num)
+        @bulletins = Bulletin.available_for_lang(I18n.locale).can_display.where(:tagged_ids => params[:tag_id]).desc( :is_top, :postdate).page( params[:page_main]).per(@page_num)
       else
-        @bulletins = Bulletin.all.available_for_lang(I18n.locale).can_display.any_of( {deadline: nil,:postdate.lte => date_now} , {:deadline.gte => date_now,:postdate.lte => date_now} ).desc( :is_top, :postdate).page( params[:page_main]).per(@page_num)
+        @bulletins = Bulletin.all.available_for_lang(I18n.locale).can_display.desc( :is_top, :postdate).page( params[:page_main]).per(@page_num)
       end
       delayed_impressionist(@tag) if @tag
     end
diff --git a/vendor/built_in_modules/announcement/init.rb b/vendor/built_in_modules/announcement/init.rb
index cb1b9fb63..c27d709ff 100644
--- a/vendor/built_in_modules/announcement/init.rb
+++ b/vendor/built_in_modules/announcement/init.rb
@@ -32,7 +32,7 @@ module Announcement
 
     widgets do
       default_widget do
-        query 'Bulletin.any_of( {deadline: nil,:postdate.lte => Time.now} , {:deadline.gte => Time.now,:postdate.lte => Time.now} )'
+        query 'Bulletin'
         enable ["typeA", "typeB_style3", "typeC"]
         image :image
         field :postdate