fix error

app/models/bulletin.rb

@@ -9,7 +9,7 @@ class Bulletin
   include OrbitCategory::Categorizable
   include Slug
   require 'bulletin_model/cache'
-  include ::BulletinModel::Cache
+  include BulletinModel::Cache
   attr_accessor :org_tag_ids
   def tags=(ids)
     self.org_tag_ids = self.tag_ids

lib/bulletin_model/cache.rb

@@ -3,12 +3,12 @@ module BulletinModel
     require 'active_support/concern'
     extend ActiveSupport::Concern
     included do
-      before_save :do_before_save
-      before_destroy :do_before_save
+      after_save :do_before_save
+      after_destroy :do_before_save
     end
     def do_before_save
       if self.class == SubPart
-        AnnsCache.where(parent_id:self.id).destroy
+        AnnsCache.where(parent_id: self.id).destroy
       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