班级的课程id变为空时打印日志

app/controllers/admin_controller.rb

@@ -61,8 +61,7 @@ class AdminController < ApplicationController
     if params[:syllabus_id] && params[:course_id]
       course = Course.where("id = #{params[:course_id].to_i}").first
       unless course.nil?
-        course.update_column('syllabus_id', params[:syllabus_id].to_i)
-        Rails.logger.error "update_syllabus_id: admin_controller/select_scourse_syllabus"
+        course.update_attribute(:syllabus_id, params[:syllabus_id].to_i)
         @flag = true
       end
     end
@@ -83,8 +82,7 @@ class AdminController < ApplicationController
         syllabus.update_attributes(:title => params[:title], :eng_name => params[:eng_name], :user_id => @user.id)
         syllabus.description = Message.where("id = 19412").first.nil? ? nil : Message.where("id = 19412").first.content
         if syllabus.save
-          course.update_column('syllabus_id', syllabus.id)
-          Rails.logger.error "update_syllabus_id: admin_controller/create_syllabus"
+          course.update_attribute(:syllabus_id, params[:syllabus_id].to_i)
           @flag = params[:flag].to_i
           @course = course
           respond_to do |format|

app/models/course.rb

@@ -80,6 +80,7 @@ class Course < ActiveRecord::Base
   after_update :update_files_public,:update_course_ealasticsearch_index
   after_create :create_board_sync, :act_as_course_activity, :act_as_course_message,:create_course_ealasticsearch_index
   before_destroy :delete_all_members,:delete_course_ealasticsearch_index
+  after_save :log_infor
 
   safe_attributes 'extra',
   'time',
@@ -504,6 +505,12 @@ class Course < ActiveRecord::Base
     ticket
   end
 
+  def log_infor
+    if self.syllabus_id.nil?
+      Rails.logger.info "##########################################################course's syllabus_id is null."
+    end
+  end
+
 end
 
 

app/services/courses_service.rb

@@ -353,7 +353,6 @@ class CoursesService
       #@course.password = params[:course][:password]
       @course.tea_id = current_user.id
       @course.syllabus_id = params[:syllabus_id].to_i
-      Rails.logger.error "update_syllabus_id: courses_service/create_course"
       @course.term = params[:term]
       @course.time = params[:time]
       @course.end_term = params[:end_term]
@@ -413,7 +412,6 @@ class CoursesService
     #course.safe_attributes = params[:course]
     #course.password = params[:course][:password]
     course.syllabus_id = params[:syllabus_id].to_i
-    Rails.logger.error "update_syllabus_id: courses_service/edit_course"
     course.time = params[:time]
     course.term = params[:term]
     course.end_time = params[:end_time]

app/services/syllabuses_service.rb

@@ -86,14 +86,12 @@ class SyllabusesService
       courses.each do |course|
         if ::Course === course
           course.syllabus_id = sy.id
-          Rails.logger.error "update_syllabus_id: syllabus_service/create"
           course.save!
           send_wechat_create_class_notice user,course
         elsif Hash === course
           c = ::Course.new(course)
           c.tea_id = user.id
           c.syllabus_id = sy.id
-          Rails.logger.error "update_syllabus_id: syllabus_service/create"
           c.update_default_value
           c.is_public = 0
           c.save!
@@ -138,7 +136,6 @@ class SyllabusesService
         course.name = c
         course.tea_id = user.id
         course.syllabus_id = sy.id
-        Rails.logger.error "update_syllabus_id: syllabus_service/edit"
         course.update_default_value
         course.is_public = 0
         course.save!