首页项目动态讨论区回复无法刷新

app/controllers/comments_controller.rb

@@ -50,12 +50,16 @@ class CommentsController < ApplicationController
       # # <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ض<EFBFBD>̬<EFBFBD>ļ<EFBFBD>¼add end
       flash[:notice] = l(:label_comment_added)
       course_activity = CourseActivity.where("course_act_type='News' and course_act_id =#{@news.id}").first
+      if course_activity
         course_activity.updated_at = Time.now
         course_activity.save
+      end
       user_activity = UserActivity.where("act_type='News' and act_id =#{@news.id}").first
+      if user_activity
         user_activity.updated_at = Time.now
         user_activity.save
       end
+    end
 
     if params[:user_activity_id]
       @user_activity_id = params[:user_activity_id]

app/controllers/messages_controller.rb

@@ -163,11 +163,15 @@ class MessagesController < ApplicationController
     # @reply.reply_id = params[:id]
     @topic.children << @reply
     course_activity = CourseActivity.where("course_act_type='Message' and course_act_id =#{@topic.id}").first
+    if course_activity
       course_activity.updated_at = Time.now
       course_activity.save
+    end
     user_activity = UserActivity.where("act_type='Message' and act_id =#{@topic.id}").first
+    if user_activity
       user_activity.updated_at = Time.now
       user_activity.save
+    end
     #@topic.update_attribute(:updated_on, Time.now)
     if !@reply.new_record?
       if params[:asset_id]

app/controllers/student_work_controller.rb

@@ -174,11 +174,15 @@ class StudentWorkController < ApplicationController
 
       if student_work.save
         course_activity = CourseActivity.where("course_act_type='HomeworkCommon' and course_act_id =#{@homework.id}").first
+        if course_activity
           course_activity.updated_at = Time.now
           course_activity.save
+        end
         user_activity = UserActivity.where("act_type='HomeworkCommon' and act_id =#{@homework.id}").first
+        if user_activity
           user_activity.updated_at = Time.now
           user_activity.save
+        end
         respond_to do |format|
           format.html {
             flash[:notice] = l(:notice_successful_create)

app/controllers/words_controller.rb

@@ -56,12 +56,16 @@ class WordsController < ApplicationController
     @save_succ = true if @jfm.errors.empty?
     if @save_succ
       course_activity = CourseActivity.where("course_act_type='JournalsForMessage' and course_act_id =#{parent_id}").first
+      if course_activity
         course_activity.updated_at = Time.now
         course_activity.save
+      end
       user_activity = UserActivity.where("act_type='JournalsForMessage' and act_id =#{parent_id}").first
+      if user_activity
         user_activity.updated_at = Time.now
         user_activity.save
       end
+    end
     respond_to do |format|
       # format.html {
       #   if @jfm.errors.empty?