Merge branch 'dev_aliyun' of https://bdgit.educoder.net/Hjqreturn/educoder into dev_aliyun

app/controllers/admins/laboratory_subjects_controller.rb

@@ -17,12 +17,16 @@ class Admins::LaboratorySubjectsController < Admins::BaseController
   def destroy
     return render_js_error('不能删除自建课程', type: :notify) if current_laboratory_subject.ownership?
 
+    ActiveRecord::Base.transaction do
       current_subject = current_laboratory_subject.subject
-    current_subject.shixuns.destroy_all
+      current_subject.shixuns.each do |shixun|
+        shixun.destroy!
+      end
       current_subject.destroy!
 
       render_delete_success
     end
+  end
 
 
   def homepage

app/models/shixun_tag_repertoire.rb

@@ -3,5 +3,5 @@ class ShixunTagRepertoire < ApplicationRecord
   belongs_to :tag_repertoire
 
   has_many :memos, :through => :memo_tag_repertoires
-  has_many :memo_tag_repertoires, :dependent => :destroy
+  # has_many :memo_tag_repertoires, :dependent => :destroy
 end