isUnique Validator for lithium (li3)

If you want to check your model against uniqueness. this snippet might help you:

	Validator::add('isUnique', function($data, $params, $options) {
	$model = $options['model'];
	$field = $options['field'];
	$key = $model::meta('key');
	$entity = $model::first(array('conditions' => array($field => $data)));
	$identifier = isset($options['values'][$key]) ? $options['values'][$key] : null;
	if ($entity && $entity->data() && $identifier == (string) $entity->$key) {
	return false;
	}
	return true;
	});

view raw validatorIsUnique.php hosted with ❤ by GitHub