如果课程没有附件，取消显示附件列表

app/views/layouts/base_homework.html.erb

@@ -161,6 +161,7 @@
                   <div class="user_underline"></div>
 
                     <!-- info -->
+                    <% unless @bid.attachments.empty? %>
                         <div class="inf_user_image">
                           <table>
                             <tr>
@@ -172,10 +173,8 @@
                             </tr>
                             <tr>
                               <td valign="top" colspan="2">
-                            <% if @bid.attachments.any?%>
                                 <% options = {:author => true,:deletable => (@bid.author.id == User.current.id || User.current.admin? ? true : false),:wrap => true,:length => 7} %>
                                 <%= render :partial => 'attachments/links', :locals => {:attachments => @bid.attachments, :options => options} %>
-                            <% end %>
                               </td>
                             </tr>
                             <tr>
@@ -183,9 +182,9 @@
                             <%#= @bid.homework_type==Bid::HomeworkFile ? "提交文件" : "提交项目" %>
                           </td-->
                             </tr>
-
                           </table>
                         </div>
+                    <% end%>
                   </div>
                 </div>
                 <!-- end -->