root/trunk/lib/validator/sfValidatorSchemaLicence.class.php

<?php
/**
 * This validators validates the license and is_opensource fields
 *
 */
class sfValidatorSchemaLicence extends sfValidatorSchema
{
  /**
   * Apply validation
   *
   * @param mixed $values
   */
  protected function doClean($values)
  {
    if ($values['is_opensource'] && 0 === strlen(trim($values['licence'])))
    {
      $error = new sfValidatorError($this, 'If your application is open source, you must specify the license (MIT, BSD, GPL, etc.)');
      throw new sfValidatorErrorSchema($this, array('licence' => $error));
    }

    return $values;
  }
}