diff --git a/app/controllers/homework_common_controller.rb b/app/controllers/homework_common_controller.rb
index 4511e5a1f..81e0a080a 100644
--- a/app/controllers/homework_common_controller.rb
+++ b/app/controllers/homework_common_controller.rb
@@ -231,8 +231,8 @@ class HomeworkCommonController < ApplicationController
             end
           end
         end
-        @homework_detail_manual.update_column('comment_status', 2)
-        @homework_detail_manual.update_column('evaluation_start', Date.today)
+        @homework_detail_manual.update_attribute('comment_status', 2)
+        @homework_detail_manual.update_attribute('evaluation_start', Date.today)
         @statue = 1
         # 匿评开启消息邮件通知
         send_message_anonymous_comment(@homework, m_status = 2)
diff --git a/app/controllers/student_work_controller.rb b/app/controllers/student_work_controller.rb
index 27b6ed272..63b14fc53 100644
--- a/app/controllers/student_work_controller.rb
+++ b/app/controllers/student_work_controller.rb
@@ -1021,14 +1021,14 @@ class StudentWorkController < ApplicationController
   end
 
   def forbidden_anonymous_comment
-    @homework.update_column('anonymous_comment', 1)
+    @homework.update_attribute('anonymous_comment', 1)
     homework_detail_manual = @homework.homework_detail_manual
     homework_detail_programing = @homework.homework_detail_programing
     if homework_detail_programing
-      homework_detail_manual.update_column('ta_proportion', 0.4)
-      homework_detail_programing.update_column('ta_proportion', 0.6)
+      homework_detail_manual.update_attribute('ta_proportion', 0.4)
+      homework_detail_programing.update_attribute('ta_proportion', 0.6)
     else
-      homework_detail_manual.update_column('ta_proportion', 1.0)
+      homework_detail_manual.update_attribute('ta_proportion', 1.0)
     end
     @homework.student_works.each do |student_work|
       set_final_score @homework,student_work
@@ -1067,7 +1067,7 @@ class StudentWorkController < ApplicationController
   def student_work_project
     @work = @homework.student_works.where("user_id = #{User.current.id} and work_status = 0").first
     if @work
-      @work.update_column('project_id', params[:projectName].to_i)
+      @work.attribute('project_id', params[:projectName].to_i)
     end
     @project = StudentWorkProject.new
     @project.homework_common_id = @homework.id
@@ -1075,6 +1075,7 @@ class StudentWorkController < ApplicationController
     @project.user_id = User.current.id
     @project.is_leader = 1
     if @project.save
+      find_homework
       @user_activity_id = params[:user_activity_id].to_i
       @hw_status = params[:hw_status].to_i
       @is_teacher = User.current.allowed_to?(:as_teacher,@homework.course) || User.current.admin?
@@ -1122,10 +1123,11 @@ class StudentWorkController < ApplicationController
   def cancel_relate_project
     @work = @homework.student_works.where("user_id = #{User.current.id} and work_status = 0").first
     if @work
-      @work.update_column('project_id', 0)
+      @work.update_attribute('project_id', 0)
     end
     relate_pro = StudentWorkProject.where("user_id = #{User.current.id} and homework_common_id = #{@homework.id}").first
     if relate_pro.destroy
+      find_homework
       @user_activity_id = params[:user_activity_id].to_i
       @hw_status = params[:hw_status].to_i
       @is_teacher = User.current.allowed_to?(:as_teacher,@homework.course) || User.current.admin?
diff --git a/app/models/homework_detail_manual.rb b/app/models/homework_detail_manual.rb
index e0c4dcdcb..501395700 100644
--- a/app/models/homework_detail_manual.rb
+++ b/app/models/homework_detail_manual.rb
@@ -3,5 +3,5 @@
 class HomeworkDetailManual < ActiveRecord::Base
    attr_accessible :ta_proportion, :comment_status, :evaluation_start, :evaluation_end, :evaluation_num, :absence_penalty, :homework_common_id
 
-  belongs_to :homework_common
+  belongs_to :homework_common,touch:true
 end
diff --git a/app/models/homework_detail_programing.rb b/app/models/homework_detail_programing.rb
index 0c445d672..80804d5af 100644
--- a/app/models/homework_detail_programing.rb
+++ b/app/models/homework_detail_programing.rb
@@ -1,7 +1,7 @@
 class HomeworkDetailPrograming < ActiveRecord::Base
   attr_accessible :language, :standard_code, :homework_common_id
 
-  belongs_to :homework_common
+  belongs_to :homework_common,touch:true
 
   def language_name
     %W(C C++ Python Java).at(self.language.to_i - 1)
diff --git a/app/models/student_work.rb b/app/models/student_work.rb
index a3f692341..4b63c4f21 100644
--- a/app/models/student_work.rb
+++ b/app/models/student_work.rb
@@ -2,7 +2,7 @@
 class StudentWork < ActiveRecord::Base
   attr_accessible :name, :description, :homework_common_id, :user_id, :final_score, :teacher_score, :student_score, :teaching_asistant_score, :system_score, :work_score, :project_id, :is_test, :simi_id, :simi_value, :work_status, :commit_time
 
-  belongs_to :homework_common
+  belongs_to :homework_common,touch:true
   belongs_to :user
   has_many :student_work_projects
   has_many :student_works_evaluation_distributions, :dependent => :destroy
diff --git a/app/models/student_work_project.rb b/app/models/student_work_project.rb
index 676071817..831e588f5 100644
--- a/app/models/student_work_project.rb
+++ b/app/models/student_work_project.rb
@@ -1,6 +1,6 @@
 class StudentWorkProject < ActiveRecord::Base
   # attr_accessible :title, :body
-  belongs_to :homework_common
+  belongs_to :homework_common,touch:true
   belongs_to :student_work
   belongs_to :project
   belongs_to :user