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

      <ul>
      <% @mac.errors.full_messages.each do |msg| %>
        <li><%= msg %></li>
      <% end %>
      </ul>
    </div>
  <% end %>

  <div class="field">
    <%= f.label :user_id, "User" %><br />
    <%= collection_select(:mac, :user_id, @users, :id, :name, :include_blank => true) %>
  </div>
  <div class="field">
    <%= f.label :mac %><br />
    <%= f.text_field :mac, :value => (@mac.mac || @arp || nil) %>
    <% if @arp.present? %><br/><em>Autodetected from your IP of <%= @ip %></em><% end %>
  </div>
  <div class="field">
    <%= f.label :note %><br />
    <%= f.text_field :note %>
  </div>
  <div class="field">
    <%= f.label :hidden %><br />
    <%= f.check_box :hidden %>
  </div>
  <div class="actions">
    <%= f.submit %>
  </div>
<% end %>