fix

app/models/shixun.rb

@@ -38,6 +38,7 @@ class Shixun < ApplicationRecord
   belongs_to :user
   # 实训服务配置
   has_many :shixun_service_configs, :dependent => :destroy
+  has_many :tidings, as: :container, dependent: :destroy
 
 	scope :search_by_name, ->(keyword) { where("name like ? or description like ? ",
 				"%#{keyword}%", "%#{keyword}%") }
@@ -248,7 +249,7 @@ class Shixun < ApplicationRecord
   private
 
   def send_tiding
-    self.tidings << Tiding.new(:user_id => self.user_id, :trigger_user_id => self.user_id, :belong_container_id => self.id, :belong_container_type =>'Shixun', :tiding_type => "System", :viewed => 0)
+    self.tidings << Tiding.new(:user_id => user_id, :trigger_user_id => 1, :belong_container_id => id, :belong_container_type =>'Shixun', :tiding_type => "System", :viewed => 0)
   end
 
 end