gistfile1.html

    <div class="image_attachment">
        <div class="attachment_text">
            Update item photo<br />
            <small>(will replace old one)</small>
        </div>
        <div class="attachment_button">
        <%= f.fields_for :assets do |asset| %>
            <%= asset.file_field :photo %>
        <% end %>
        </div>
    </div>
    <div class="image_attachment">
        <div class="attachment_text">
            Update receipt<br />
            <small>(will replace old one)</small>
        </div>
        <div class="attachment_button">
        <%= f.fields_for :receipts do |receipt| %>
            <%= receipt.file_field :photo %>
        <% end %>
        </div>
    </div>