fixed 删除用户时保留附件数据

app/models/user.rb

@@ -137,7 +137,7 @@ class User < Owner
   has_many :tidings, :dependent => :destroy
   # has_many :journals_for_messages, :as => :jour, :dependent => :destroy
 
-  has_many :attachments,foreign_key: :author_id, :dependent => :destroy
+  has_many :attachments,foreign_key: :author_id
 
   has_one :ci_cloud_account, class_name: 'Ci::CloudAccount', dependent: :destroy