学生打开的作品列表中不应通过下拉列表访问到挂起的作业

app/views/student_work/index.html.erb

@@ -69,16 +69,21 @@
         <ul class="menu_r">
           <li>
             <a href="javascript:void(0);" class="parent">
-              <% @all_homework_commons.each_with_index do |homework_common,index |%>
+              <% if @is_teacher %>
+                  <% hcommons = @all_homework_commons %>
+              <% else %>
+                  <% hcommons = @homework_commons %>
+              <% end %>
+              <% hcommons.each_with_index do |homework_common,index |%>
                 <% if homework_common.id == @homework.id %>
-                <%="作业 #{@all_homework_commons.count - index}"  %>
+                <%="作业 #{hcommons.count - index}"  %>
                 <% end %>
               <% end%>
             </a>
             <ul>
-              <% @all_homework_commons.each_with_index do |homework_common,index |%>
+              <% hcommons.each_with_index do |homework_common,index |%>
                   <li class="pr10">
-                    <%= link_to "作业#{@all_homework_commons.count - index}：#{homework_common.name}",student_work_index_path(:homework => homework_common.id)%>
+                    <%= link_to "作业#{hcommons.count - index}：#{homework_common.name}",student_work_index_path(:homework => homework_common.id)%>
                     <%#= link_to "第#{@homework_commons.count - index}次作业",student_work_index_path(:homework => homework_common.id)%>
                   </li>
               <% end%>