public function init()
{
$passwordValidator = new sfValidatorString(array("required" => true, 'min_length' => 6));
$passwordValidator->addMessage('min_length', "You password must be 6 characters or greater.");
$passwordValidator->addMessage('required', "You must enter a password.");
$existingPasswordValidator = new sfValidatorCallback(array('callback' => 'ChangePasswordForm::checkExistingPassword', 'arguments' => array('username' => sfContext::getInstance()->getUser()->getUsername())), array('invalid' => 'Wrong password.'));
$this->addWidget('old_password', new sfWidgetFormInputPassword(), $existingPasswordValidator);
$this->addWidget('new_password', new sfWidgetFormInputPassword(), $passwordValidator);
$this->addWidget('confirm_new_password', new sfWidgetFormInputPassword(), new sfValidatorString(array("required" => true), array("required" => "Please confirm your password.")));
$this->validatorSchema->setPostValidator(new sfValidatorSchemaCompare('password', sfValidatorSchemaCompare::EQUAL, 'confirm_password'));
}
