diff --git a/app/controllers/application_controller.rb b/app/controllers/application_controller.rb
index 7c02f1df..bdb9059e 100644
--- a/app/controllers/application_controller.rb
+++ b/app/controllers/application_controller.rb
@@ -229,7 +229,8 @@ class ApplicationController < ActionController::Base
     redirect_to ret
   end
 
-  def get_sorted_and_filtered(object_class, query=nil)  
+  def get_sorted_and_filtered(object_class, query = nil, objects = nil)  
+    object_class = object_class.classify.constantize
     if params[:filter] || params[:sort] || params[:new_filter]
       @filter = params[:filter]
       new_filter = params[:new_filter]
@@ -248,11 +249,10 @@ class ApplicationController < ActionController::Base
         @filter = {new_filter[:type] => [new_filter[:id].to_s]}
       end
 
-      objects = get_objects(object_class, query)
-      object_class = object_class.classify.constantize
-      if !params[:sort].blank?
+      objects ||= get_objects(object_class, query)
+      unless params[:sort].blank?
         options = params[:sort_options]
-        options = [options] if !options.class.eql?(Array)
+        options = [options] unless options.is_a?(Array)
         options.each do |option|
           if object_class.fields.include?(option)
             if object_class.fields[option].type.to_s.eql?('Object') && !object_class.relations[option].nil?
@@ -272,6 +272,19 @@ class ApplicationController < ActionController::Base
               when :referenced_in
                 objects = get_objects_from_referenced_objects(object_class.relations[option].class_name.constantize, objects, "#{option}_id")
             end
+          elsif option.eql?('category')
+            category_array = @module_app.categories.inject([]){ |result, value|
+              result << [value.title, value]
+            }
+            params[:direction].eql?('asc') ? category_array.sort! : category_array.sort!.reverse!
+            sorted_objects = Array.new
+            category_array.each do |x|
+              buffer_categories = x[1].buffer_categories
+              buffer_categories.each {|buffer_category| sorted_objects << buffer_category.categorizable }
+            end
+            sorted_objects.flatten!
+            sorted_objects.uniq!
+            objects = get_with_nil(objects, option, sorted_objects)
           elsif option.eql?('tags')
             tag_array = @module_app.tags.inject([]){ |result, value|
               result << [value.name, value]
@@ -285,7 +298,7 @@ class ApplicationController < ActionController::Base
             sorted_objects.flatten!
             sorted_objects.uniq!
             objects = get_with_nil(objects, option, sorted_objects)
-          end 
+          end
         end
       end
       if @filter
@@ -381,7 +394,6 @@ class ApplicationController < ActionController::Base
   end
 
   def get_objects(object_class, query=nil)
-    object_class = object_class.classify.constantize
     if query
       objects = object_class.where(query)
     else
diff --git a/app/controllers/orbit_backend_controller.rb b/app/controllers/orbit_backend_controller.rb
index 510b09eb..2d220cfa 100644
--- a/app/controllers/orbit_backend_controller.rb
+++ b/app/controllers/orbit_backend_controller.rb
@@ -21,9 +21,11 @@ class OrbitBackendController < ApplicationController
     status << 'is_top'
     status << 'is_hot'
     status << 'is_hidden' unless is_guest?
-    status << 'is_pending' if is_manager?
-    status << 'is_checked' if is_manager?
-    status << 'is_rejected' if is_manager?
+    if @module_app.is_approvable && is_manager?
+      status << 'is_pending'
+      status << 'is_checked'
+      status << 'is_rejected'
+    end
     status
   end
 
diff --git a/lib/orbit_category/categorizable.rb b/lib/orbit_category/categorizable.rb
index 3cd29544..4670dce0 100644
--- a/lib/orbit_category/categorizable.rb
+++ b/lib/orbit_category/categorizable.rb
@@ -31,7 +31,11 @@ module OrbitCategory
       def category=(id)
         self.buffer_category.destroy if self.buffer_category
         self.build_buffer_category(category_id: id)
-        self.category_id = id
+        self.write_attribute(:category_id, id)
+      end
+
+      def category_id=(id)
+        self.category = id
       end
 
       def disable?
diff --git a/vendor/built_in_modules/announcement/app/views/panel/announcement/back_end/bulletins/_form.html.erb b/vendor/built_in_modules/announcement/app/views/panel/announcement/back_end/bulletins/_form.html.erb
index 80f80b60..14bdb653 100644
--- a/vendor/built_in_modules/announcement/app/views/panel/announcement/back_end/bulletins/_form.html.erb
+++ b/vendor/built_in_modules/announcement/app/views/panel/announcement/back_end/bulletins/_form.html.erb
@@ -51,7 +51,7 @@
       <div class="control-group">
         <label class="control-label muted"><%= t(:category) %></label>
         <div class="controls">
-          <%= f.select :category, @categories.collect{|t| [ t.title, t.id ]} %>
+          <%= f.select :category_id, @categories.collect{|t| [ t.title, t.id ]} %>
         </div>
       </div>