用户最新列表单位完成，修改了点击最后两页报错的问题

app/views/admin/latest_login_users.html.erb

@@ -92,6 +92,7 @@
                 <% end%>
               </td>
               <td align="center">
+                <% unless user.user_extensions.nil? %>
                     <% if user.user_extensions.identity.to_i == 0 %>
                     <!--优先取school中校名，如果校名不存在就取occupation-->
                         <% occupation = user.user_extensions.school_id.nil? ? "" : (School.where("id =?", user.user_extensions.school_id)).first.try(:name) %>
@@ -99,6 +100,7 @@
                     <% else %>
                         <%= user.user_extensions.occupation %>
                     <% end %>
+                <% end %>
               </td>
             </tr>
         <% end %>