Fix bug.

app/controllers/asks_controller.rb

@@ -19,10 +19,12 @@ class AsksController < ApplicationController
       else
         categories = Category.where(:id.in=>OrbitHelper.widget_categories).enabled
       end
-      if (module_app.asc rescue true)
-        categories = categories.sort_by{|category| (category.sort_number.to_i rescue category.id)}
-      else
-        categories = categories.sort_by{|category| (-category.sort_number.to_i rescue category.id)}
+      unless Category.respond_to?(:sorted)
+        if (module_app.asc rescue true)
+          categories = categories.sort_by{|category| (category.sort_number.to_i rescue category.id)}
+        else
+          categories = categories.sort_by{|category| (-category.sort_number.to_i rescue category.id)}
+        end
       end
       tags = module_app.tags
       ask_question = AskQuestion.new
@@ -132,10 +134,12 @@ class AsksController < ApplicationController
       else
         categories = Category.where(:id.in=>OrbitHelper.page_categories).enabled
       end
-      if (module_app.asc rescue true)
-        categories = categories.sort_by{|category| (category.sort_number.to_i rescue category.id)}
-      else
-        categories = categories.sort_by{|category| (-category.sort_number.to_i rescue category.id)}
+      unless Category.respond_to?(:sorted)
+        if (module_app.asc rescue true)
+          categories = categories.sort_by{|category| (category.sort_number.to_i rescue category.id)}
+        else
+          categories = categories.sort_by{|category| (-category.sort_number.to_i rescue category.id)}
+        end
       end
       category_ids = categories.collect{|v| v.id.to_s}
       ask_settings = AskCategorySetting.enabled.where(:category_id.in=> category_ids).to_a