symfony上传文件

symfony 1.2 利用form类，设置文件上传。

class WorldImagesForm extends BaseWorldImagesForm
{
  public function configure()
  {
  	$this->widgetSchema['file'] = new sfWidgetFormInputFile();
  	$this->validatorSchema['file'] = new sfValidatorFile(array(
  	'required' => false,
  	'path' => sfConfig::get('sf_upload_dir').'/images/guide',
  	'max_size' => '5242880',
  	'mime_types' => 'web_images'),
  	array(
  	'max_size' => '最大15Mb！',
  	'mime_types' => '只支持web图片格式'
  	));

  }
}