ids为空时不需要执行

app/controllers/homework_common_controller.rb

@@ -39,9 +39,11 @@ class HomeworkCommonController < ApplicationController
 
       # homework.delay.set_jour_viewed
     end
+    unless ids.empty?
       User.current.at_messages.where(viewed: false,
                                    at_message_type: 'JournalsForMessage',
                                    at_message_id: ids).update_all(viewed: true)
+    end
 
     @left_nav_type = 3
     respond_to do |format|