trustieforge/app/views/student_work/_revise_attachments.html.erb

<div class="fl">
  <div class="cl"></div>
  <span style="font-weight:normal;">
    <a href="javascript:void(0);" class="blueCir ml5" onclick="$('#_file<%=work.id %>').click();">上传附件</a>
    <%#= button_tag "上传附件", :type=>"button", :onclick=>"$('#_file#{work.id}').click();",:onmouseover => 'this.focus()',:class => 'blueCir ml5' %>
    <%= file_field_tag 'attachments[dummy][file]',
                       :id => "_file#{work.id}",
                       :class => 'file_selector',
                       :multiple => true,
                       :onchange => "addReviseFiles(this, '#{work.id}');",
                       :style => 'display:none',
                       :data => {
                               :max_file_size => Setting.attachment_max_size.to_i.kilobytes,
                               :max_file_size_message => l(:error_attachment_too_big, :max_size => number_to_human_size(Setting.attachment_max_size.to_i.kilobytes)),
                               :max_concurrent_uploads => Redmine::Configuration['max_concurrent_ajax_uploads'].to_i,
                               :upload_path => uploads_path(:format => 'js'),
                               :description_placeholder => l(:label_optional_description),
                               :field_is_public => l(:field_is_public),
                               :are_you_sure => l(:text_are_you_sure),
                               :file_count => l(:label_file_count),
                               :lebel_file_uploding => l(:lebel_file_uploding),
                               :delete_all_files => l(:text_are_you_sure_all),
                               :containerid => "#{work.id}"
                       } %>
  </span>
  <% content_for :header_tags do %>
      <%= javascript_include_tag 'attachments' %>
  <% end %>
</div>