orbit-basic/app/views/admin/designs/_form.html.erb

<%= stylesheet_link_tag "design_temp"  %>
<%= javascript_include_tag "design_temp"  %>
<p>
<%= f.label :title, t('admin.title') %>
<%= f.text_field :title, :class => 'text'   %>
</p>

<p>
<%= f.label :author, t('admin.author') %>
<%= f.text_field :author, :class => 'text' %>
</p>

<p>
<%= f.label :intro, t('admin.intro') %>
<%= f.text_field :intro, :class => 'text' %>
</p>

<p>
<%= f.label "layout", t('admin.layout') %>
<%  if @design.layout.blank? %>
    <%= f.file_field :layout %>
  <% else%>
    <%= File.basename (Design.all.last.layout.url)  %>
<% end %> 
</p>


<p>
  <%= f.label "stylesheet", t('admin.stylesheet') %>
    <ul>
    <% @design.stylesheets.each do |t| %>
      <li class="r_destroy r_edit" ><%= t.file_filename %>
        <%= fields_for "design[stylesheets][]", t, :index => nil do |f| %>
        <%= f.hidden_field :id %>
        <%= f.hidden_field :to_destroy %>
      <%end%>
        <a class="remove_mark" href="#">Del</a></li>
    <% end %>
    </ul>
  <%= fields_for "design[stylesheets][]", @design, :index => nil do |f| %>
    <%= f.file_field :file ,{:class=>"multi_files",:rtype=>"stylesheets"}%>
  <% end %>
</p>

<p>
  <%= f.label "javascript", t('admin.javascript') %>
    <ul>
    <% @design.javascripts.each do |t| %>
      <li class="r_destroy r_edit" ><%= t.file_filename %>
        <%=fields_for "design[javascripts][]",t,:index=>nil do |f| %>
        <%= f.hidden_field :id %>
        <%= f.hidden_field :to_destroy %>
      <%end%>
        <a class="remove_mark" href="#">Del</a></li>
    <% end %>
    </ul>
  <%= fields_for "design[javascripts][]", @design, :index => nil do |f| %>
    <%= f.file_field :file,{:class=>"multi_files",:rtype=>"javascripts"} %>
<% end %>
</p>

<p>
  <%= f.label "image", t('admin.image') %>
  <ul>
    <% @design.images.each do |t| %>
      <li class="r_destroy r_snapshot" path="<%= t.file %>" item_id="<%=t.id %>"><%= t.file_filename %>
        <%=fields_for "design[images][]",t,:index=>nil do |f| %>
        <%= f.hidden_field :id %>
        <%= f.hidden_field :to_destroy %>
      <%end%>
        <a class="remove_mark" href="#">Del</a></li>
    <% end %>
  </ul>
  <%= fields_for "design[images][]", @design, :index => nil do |f| %>
    <%= f.file_field :file ,{:class=>"multi_files",:rtype=>"images"}%>
  <% end %>
</p>