doug_form.html.erb

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

      <ul>
      <% @wiki.errors.full_messages.each do |msg| %>
        <li><%= msg %></li>
      <% end %>
      </ul>
    </div>
  <% end %>
  <div class="field">
    <%= f.label :name %><br>
    <%= f.text_field :name %>
  </div>
  <div class="field">
    <%= f.label :body %><br>
    <%= f.text_area :body %>
  </div>
  <% if current_user.role?("premium") %>
    <div class="field">
      <%= f.check_box :private %>
      <%= f.label :private, "Private?" %><br>
    </div>
  <% end %>
  <div class="actions">
    <%= f.submit %>
  </div>
<% end %>