ensl.org/app/views/directories/_form.html.erb

<div class="wide box">
  <%= form_for @directory do |f| %>
    <div id="error_explanation">
      <ul>
        <% @directory.errors.full_messages.each do |msg| %>
          <li><%= msg %></li>
        <% end %>
      </ul>
    </div>
    <% if @directory.new_record? %>
      <%= f.hidden_field :parent_id %>
    <% end %>

    <p>
      <b>Parent:</b> <%= @directory.parent.full_path %>
  </p>

  <p>
    <%= f.label :name %><br />
    <%= f.text_field :name %>
  </p>
  <p>
    <%= f.label :hidden %><br />
    <%= f.check_box :hidden %>
  </p>
  <p>
    <%= f.submit %>
  </p>
<% end %>
</div>