删除增加title

app/views/student_work/_work_attachments.html.erb

@@ -1,7 +1,7 @@
 <% attachments.each_with_index do |attachment,i| %>
     <div id="attachment_<%= attachment.id%>">
       <%= link_to_short_attachment attachment, :class => 'link_file', :download => true -%>
-      <%= link_to('&nbsp;'.html_safe, attachment_path(attachment, :format => 'js'), :method => 'delete', :remote => true, :class => 'remove-upload') if attachment.id && User.current == attachment.author %>
+      <%= link_to('&nbsp;'.html_safe, attachment_path(attachment, :format => 'js'), :method => 'delete', :remote => true, :title => '删除', :class => 'remove-upload') if attachment.id && User.current == attachment.author %>
       <span class="ml5">(<%= number_to_human_size attachment.filesize %>)</span>
       <div class="cl"></div>
     </div>