diff --git a/app/models/journals_for_message.rb b/app/models/journals_for_message.rb
index d5697d87f..4300ae9cc 100644
--- a/app/models/journals_for_message.rb
+++ b/app/models/journals_for_message.rb
@@ -11,6 +11,7 @@ class JournalsForMessage < ApplicationRecord
 
   scope :parent_comment, -> { where(m_parent_id: nil)}
   scope :search_by_jour_type, lambda{|type,ids| where(jour_type:type,jour_id: ids)}
+  has_many :tidings, as: :container, dependent: :destroy
 
   # "jour_type", # 留言所属类型
   # "jour_id", # 留言所属类型的id