From f41341a3d4b1ad4425d8eabd13d693ba848512b8 Mon Sep 17 00:00:00 2001
From: cxt <pinecxt@163.com>
Date: Wed, 22 Feb 2017 10:35:33 +0800
Subject: [PATCH] =?UTF-8?q?=E7=8F=AD=E7=BA=A7=E6=88=90=E5=91=98=E5=88=97?=
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---
 app/models/user.rb                          | 10 ++++++++++
 app/views/courses/_new_member_list.html.erb |  2 +-
 2 files changed, 11 insertions(+), 1 deletion(-)

diff --git a/app/models/user.rb b/app/models/user.rb
index d801ecd9e..94affa11d 100644
--- a/app/models/user.rb
+++ b/app/models/user.rb
@@ -1237,6 +1237,16 @@ class User < Principal
     Thread.current[:current_user] ||= User.anonymous
   end
 
+  def user_real_extension
+    ue = self.user_extensions
+    if ue.nil?
+      ue = UserExtensions.new
+      ue.user_id = self.id
+      ue.save
+    end
+    ue
+  end
+
   # Returns the anonymous user.  If the anonymous user does not exist, it is created.  There can be only
   # one anonymous user per database.
   def self.anonymous
diff --git a/app/views/courses/_new_member_list.html.erb b/app/views/courses/_new_member_list.html.erb
index 67973dc65..f059ca4df 100644
--- a/app/views/courses/_new_member_list.html.erb
+++ b/app/views/courses/_new_member_list.html.erb
@@ -83,7 +83,7 @@
           <%= link_to user.show_name, user_path(user), :class => 'fl sy_class_users_st_name' ,:title => "#{user.show_name}", :target => '_blank' %>
         </td>
         <td>
-          <span class="sy_class_users_st_num" title="<%= user.user_extensions.student_id %>"><%= user.user_extensions.student_id %></span>
+          <span class="sy_class_users_st_num" title="<%= user.user_real_extension.student_id %>"><%= user.user_real_extension.student_id %></span>
         </td>
         <td>
           <% if !is_teacher && User.current.id != member.user_id && course_has_score_open_common_homework(@course) %>