fix error

app/controllers/admin/announcements_controller.rb

@@ -19,6 +19,7 @@ class Admin::AnnouncementsController < OrbitAdminController
     ids.each_with_index do |id,i|
       Bulletin.where(id: id).update(sort_number: i)
     end
+    AnnsCache.all.delete
     edit_sort
     render 'update_sort',layout: false
   

lib/bulletin_model/cache.rb

@@ -8,7 +8,7 @@ module BulletinModel
     end
     def do_before_save
       if self.class == SubPart
-        AnnsCache.where(parent_id: self.id).destroy
+        AnnsCache.where(parent_id: self.id).delete
       elsif self.class == Bulletin || (self.class == Page && self.module == "announcement")
         if self.class == Bulletin
           tmp_tag_ids = (Array(self.tag_ids) + Array(self.org_tag_ids)).uniq
@@ -19,7 +19,7 @@ module BulletinModel
             end
           end
         end
-        AnnsCache.all.destroy
+        AnnsCache.all.delete
       end
     end
   end