diff --git a/app/views/files/_course_file_filter_order.html.erb b/app/views/files/_course_file_filter_order.html.erb
index b5890fec6..a740d9481 100644
--- a/app/views/files/_course_file_filter_order.html.erb
+++ b/app/views/files/_course_file_filter_order.html.erb
@@ -1,9 +1,15 @@
 <% if @order == "asc" %>
-    按&nbsp;<%= link_to "时间", search_tag_attachment_course_files_path(@course, :sort => "created_on:desc", :tag_name => @tag_name, :q => @q), :class => "f_b c_grey", :remote => true %><%= render partial: 'files/arrow_show',locals: { sort: @sort,order:@order,current:"created_on"} %>&nbsp;/&nbsp;
-    <%= link_to "下载次数", search_tag_attachment_course_files_path(@course, :sort => "downloads:desc", :tag_name => @tag_name, :q => @q), :class => "f_b c_grey",:remote => @is_remote  %><%= render partial: 'files/arrow_show',locals: { sort: @sort,order:@order,current:"downloads"} %>&nbsp;/&nbsp;
-    <%= link_to "引用次数", search_tag_attachment_course_files_path(@course, :sort => "quotes:desc", :tag_name => @tag_name, :q => @q), :class => "f_b c_grey", :remote => @is_remote %><%= render partial: 'files/arrow_show',locals: { sort: @sort,order:@order,current:"quotes"} %>&nbsp;排序
+    按&nbsp;<%= link_to "时间", search_tag_attachment_course_files_path(@course, :sort => "created_on:desc", :tag_name => @tag_name.nil? ? " " : @tag_name, :q => @q.nil? ? " " : @q), :class => "f_b c_grey", :remote => true %>
+    <%= render partial: 'files/arrow_show',locals: { sort: @sort,order:@order,current:"created_on"} %>&nbsp;/&nbsp;
+    <%= link_to "下载次数", search_tag_attachment_course_files_path(@course, :sort => "downloads:desc", :tag_name => @tag_name.nil? ? " " : @tag_name, :q => @q.nil? ? " " : @q), :class => "f_b c_grey",:remote => true %>
+    <%= render partial: 'files/arrow_show',locals: { sort: @sort,order:@order,current:"downloads"} %>&nbsp;/&nbsp;
+    <%= link_to "引用次数", search_tag_attachment_course_files_path(@course, :sort => "quotes:desc", :tag_name => @tag_name.nil? ? " " : @tag_name, :q => @q.nil? ? " " : @q), :class => "f_b c_grey", :remote => true %>
+    <%= render partial: 'files/arrow_show',locals: { sort: @sort,order:@order,current:"quotes"} %>&nbsp;排序
 <% else %>
-    按&nbsp;<%= link_to "时间", search_tag_attachment_course_files_path(@course, :sort => "created_on:asc", :tag_name => @tag_name, :q => @q), :class => "f_b c_grey" , :remote => @is_remote %><%= render partial: 'files/arrow_show',locals: { sort: @sort,order:@order,current:"created_on"} %>&nbsp;/&nbsp;
-    <%= link_to "下载次数", search_tag_attachment_course_files_path(@course, :sort => "downloads:asc", :tag_name => @tag_name, :q => @q), :class => "f_b c_grey", :remote => @is_remote %><%= render partial: 'files/arrow_show',locals: { sort: @sort,order:@order,current:"downloads"} %>&nbsp; /&nbsp;
-    <%= link_to "引用次数", search_tag_attachment_course_files_path(@course, :sort => "quotes:asc", :tag_name => @tag_name, :q => @q), :class => "f_b c_grey", :remote => @is_remote %><%= render partial: 'files/arrow_show',locals: { sort: @sort,order:@order,current:"quotes"} %>&nbsp;排序
+    按&nbsp;<%= link_to "时间", search_tag_attachment_course_files_path(@course, :sort => "created_on:asc", :tag_name => @tag_name.nil? ? ' ' : @tag_name, :q => @q.nil? ? ' ' : @q), :class => "f_b c_grey" , :remote => true %>
+    <%= render partial: 'files/arrow_show',locals: { sort: @sort,order:@order,current:"created_on"} %>&nbsp;/&nbsp;
+    <%= link_to "下载次数", search_tag_attachment_course_files_path(@course, :sort => "downloads:asc", :tag_name => @tag_name.nil? ? ' ' : @tag_name, :q => @q.nil? ? ' ' : @q), :class => "f_b c_grey", :remote => true %>
+    <%= render partial: 'files/arrow_show',locals: { sort: @sort,order:@order,current:"downloads"} %>&nbsp;/&nbsp;
+    <%= link_to "引用次数", search_tag_attachment_course_files_path(@course, :sort =>"quotes:asc", :tag_name => @tag_name.nil? ? ' ' : @tag_name, :q => @q.nil? ? ' ' : @q),:class => "f_b c_grey", :remote => true %>
+    <%= render partial:'files/arrow_show',locals: { sort: @sort,order:@order,current:"quotes"} %>&nbsp;排序
 <% end %>
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