public function handleError(AgaviRequestDataHolder $rd) {
		$user = $this->getUser();
		$request = $this->context->getRequest();
		if (!$rd->hasParameter('start_date')) {
			$request->setAttribute('populate', new AgaviParameterHolder($rd->getParameters() + array('start_date' => $user['start_date'])), 'org.agavi.filter.FormPopulationFilter');
		}

		return 'Input';
	}