基本パターン

if ($this->hasRequestParameter('xxx'))
{
  $this->model->setXxx($this->getRequestParameter('xxx'));
}

または

if ($this->getRequestParameter('xxx') !== null)
{
  $this->model->setXxx($this->getRequestParameter('xxx'));
}

※チェックボックスの場合は、チェックボックスを含むフォームを処理するアクションで、以下のようにデフォルトをセットする必要がある。

if (!$this->hasRequestParameter('xxx'))
{
  $this->getRequest()->setParameter('xxx', false);
}

または

if ($this->getRequestParameter('xxx') == null)
{
  $this->getRequest()->setParameter('xxx', false);
}

日付
(input_date_tag, select_day_tag+select_month_tag+select_year_tag)

if ($this->hasRequestParameter('date'))
// または if ($this->getRequestParameter('date') !== null)
{
  if ($this->getRequestParameter('date'))
  {
    try
    {
      $dateFormat = new sfDateFormat($this->getUser()->getCulture());
      if (!is_array($this->getRequestParameter('date')))
      {
        $value = $dateFormat->format($this->getRequestParameter('date'), 'i', $dateFormat->getInputPattern('d'));
      }
      else
      {
        $value_array = $this->getRequestParameter('date');
        if (is_numeric($value_array['year']) && is_numeric($value_array['month']) && is_numeric($value_array['day']))
        {
          $value = $value_array['year'].'-'.$value_array['month'].'-'.$value_array['day'].(isset($value_array['hour']) ? ' '.$value_array['hour'].':'.$value_array['minute'].(isset($value_array['second']) ? ':'.$value_array['second'] : '') : '');
        }
        else
        {
          $value = null;
        }
      }
      $this->model->setDate($value);
    }
    catch (sfException $e)
    {
      // not a date
    }
  }
  else
  {
    $this->model->setDate(null);
  }
}

日付時刻
日付とほぼ同じだが、値をテキストで受け取った場合(rich=true)のフォーマット引数が異なる。

$value = $dateFormat->format($this->getRequestParameter('date'), 'i', $dateFormat->getInputPattern('d'));

日付時刻

$value = $dateFormat->format($this->getRequestParameter('date'), 'I', $dateFormat->getInputPattern('g'));

symfony PHP5 framework

Retrieve information about the current route
If you need to retrieve information about the current route, for instance to prepare a future 'back to page xxx' link, you should use the methods of the sfRouting object. For instance, if your routing.yml defines:

<code>
my_rule:
  url:   /call_my_rule
  param: { module: mymodule, action: myaction }
</code>

Use the following calls in the action:

<code>
// if you require an URL like
http://myapp.example.com/call_my_rule/param1/xxx/param2/yyy
 
$uri = sfRouting::getInstance()->getCurrentInternalUri();
// will return 'mymodule/myaction?param1=xxx&param2=yyy'
 
$uri = sfRouting::getInstance()->getCurrentInternalUri(true);
// will return '@myrule?param1=xxx&param2=yyy'
 
$route = sfRouting::getInstance()->getCurrentRouteName();
// will return 'myrule'
</code>

The URIs returned by the ->getCurrentInternalUri() method can be used in a call to a link_to() helper.
In addition, you might want to get the first or the last action called in a template. The following variables are automatically updated at each request and are available to templates:
$sf_first_action
$sf_first_module
$sf_last_action
$sf_last_module

Code Snippets
Complement complex SQL in SYMFONY
http://propel.phpdb.org/trac/ticket/57
集計関数を使用する例

SELECT MIN(reserve.MINUTES_PER_UNIT), reserve.NUMBER_PER_UNIT
FROM reserve
WHERE reserve.TYPE='time' AND reserve.RESERVE_GROUP_ID=1
GROUP BY reserve.TYPE,reserve.RESERVE_GROUP_ID

$c = new Criteria();
$c->add(ReservePeer::TYPE, $reserve_type);
$c->add(ReservePeer::RESERVE_GROUP_ID, $reserve_group_id);
$c->addSelectColumn('MIN('.ReservePeer::MINUTES_PER_UNIT.')');
$c->addGroupByColumn(ReservePeer::TYPE);
$c->addGroupByColumn(ReservePeer::RESERVE_GROUP_ID);
$rs = ReservePeer::doSelectRS($c);
while ($rs->next())
{
  $minutes_per_unit = $rs->getInt(1);
}

http://www.symfony-project.com/book/trunk/file_structure
symfonyのディレクトリパスは、sfConfigで取得できる。

// root directory structure
'sf_cache_dir_name'   => 'cache',
'sf_log_dir_name'     => 'log',
'sf_lib_dir_name'     => 'lib',
'sf_model_dir_name'   => 'model',
'sf_web_dir_name'     => 'web',
'sf_data_dir_name'    => 'data',
'sf_config_dir_name'  => 'config',
'sf_apps_dir_name'    => 'apps',
 
// global directory structure
'sf_app_dir'        => $sf_root_dir.DIRECTORY_SEPARATOR.'apps'.DIRECTORY_SEPARATOR.$sf_app,
'sf_model_dir'      => $sf_root_dir.DIRECTORY_SEPARATOR.'model',
'sf_lib_dir'        => $sf_root_dir.DIRECTORY_SEPARATOR.'lib',
'sf_web_dir'        => $sf_root_dir.DIRECTORY_SEPARATOR.'web',
'sf_upload_dir'     => $sf_root_dir.DIRECTORY_SEPARATOR.'web'.DIRECTORY_SEPARATOR.'uploads',
'sf_base_cache_dir' => $sf_root_dir.DIRECTORY_SEPARATOR.'cache'.DIRECTORY_SEPARATOR.$sf_app,
'sf_cache_dir'      => $sf_root_dir.DIRECTORY_SEPARATOR.'cache'.DIRECTORY_SEPARATOR.$sf_app.DIRECTORY_SEPARATOR.$sf_environment,
'sf_log_dir'        => $sf_root_dir.DIRECTORY_SEPARATOR.'log',
'sf_data_dir'       => $sf_root_dir.DIRECTORY_SEPARATOR.'data',
'sf_config_dir'     => $sf_root_dir.DIRECTORY_SEPARATOR.'config',

• forward時には、各action間で$thisのプロパティは引き継がれない。
• forward時には、各actionで毎回preExecuteとpostExecute()が実行される。
• validationは、actionの実行前に行われるため、validateXxxx()、handleErrorXxxx()の実行時には、preExecute()、postExecute()は実行されない。