socialforge/app/views/forums/_form.html.erb

<!-- %= form_for(@forum) do |f| % -->
<%= labelled_form_for(@forum) do |f|  %>
  <% if @forum.errors.any? %>
    <div id="error_explanation">
      <h2><%= pluralize(@forum.errors.count, "error") %> prohibited this forum from being saved:</h2>

      <ul>
      <% @forum.errors.full_messages.each do |msg| %>
        <li><%= msg %></li>
      <% end %>
      </ul>
    </div>
  <% end %>
  <div class="actions">
    <p><%= f.text_field :name, :required => true %></p>
    <p><%= f.text_field :description, :required => true, :size => 80 %></p>
    <%= f.submit %>
  </div>
<% end %>