tracks/app/views/login/login.html.erb

<% auth_schemes = Tracks::Config.auth_schemes
   show_database_form = auth_schemes.include?('database')
   show_openid_form = auth_schemes.include?('open_id')
-%>

<div title="Account login" id="loginform" class="form">

  <%= render_flash %>

  <h3>Please log in to use Tracks:</h3>

<% if show_database_form %>
  <div id="database_auth_form" style="display:block">
      <% form_tag :action=> 'login' do %>
        <table>
          <tr>
            <td><label for="user_login">Login:</label></td>
            <td><input type="text" name="user_login" id="user_login" value="" class="login_text" /></td>
          </tr>
          <tr> 
            <td><label for="user_password">Password:</label></td>
            <td><input type="password" name="user_password" id="user_password" class="login_text" /></td>
          </tr>
         <tr> 
            <td><label for="user_noexpiry">Stay logged in:</label></td>
            <td><input type="checkbox" name="user_noexpiry" id="user_noexpiry" checked  /></td>
          </tr>
          <tr> 
            <td></td>
            <td><input type="submit" name="login" value="Sign In &#187;" class="primary" /></td>
          </tr>
        </table>
      <% end %>
  </div>
<% end %>

<% if show_openid_form %>
  <div id="openid_auth_form" style="display:none">
    <% form_tag :action=> 'login', :action => 'begin' do %>
      <table>
        <tr>
          <td><label for="openid_url">Identity URL:</label></td>
          <td><input type="text" name="openid_url" id="openid_url" value="<%= @openid_url %>" class="login_text open_id" /></td>
        </tr>
       <tr> 
          <td><label for="user_noexpiry">Stay logged in:</label></td>
          <td><input type="checkbox" name="user_noexpiry" id="user_noexpiry" checked  /></td>
        </tr>
        <tr> 
          <td></td>
          <td><input type="submit" name="login" value="Sign In &#187;" class="primary" /></td>
        </tr>
      </table>
    <% end %>
  </div>
 <% end %>
 
</div>
<% if show_openid_form %><p id="alternate_auth_openid" class="alternate_auth">or, <a href="#" onclick="Login.showOpenid();return false;">login with an OpenId</a></p><% end %>
<% if show_database_form %><p id="alternate_auth_database" class="alternate_auth">or, <a href="#" onclick="Login.showDatabase();return false;">go back to the standard login</a></p><% end %>

<script type="text/javascript">
function showPreferredAuth() {
  var preferredAuth = new CookieManager().getCookie('preferred_auth');
  var databaseEnabled = <%= show_database_form ? 'true' : 'false' %>;
  var openidEnabled = <%= show_openid_form ? 'true' : 'false' %>;
	if (preferredAuth && preferredAuth == 'openid' && openidEnabled) {
	  Login.showOpenid();
	}
	else if (databaseEnabled)  {
	  Login.showDatabase();
	}
	else if (openidEnabled)  {
	  Login.showOpenid();
	}
}
Event.observe(window, 'load', showPreferredAuth);
</script>