Nette\Forms\Helpers::exportRules PHP Method

    public static function exportRules(Rules $rules)
    {
        $payload = [];
        foreach ($rules as $rule) {
            if (!is_string($op = $rule->validator)) {
                if (!Nette\Utils\Callback::isStatic($op)) {
                    continue;
                }
                $op = Nette\Utils\Callback::toString($op);
            }
            if ($rule->branch) {
                $item = ['op' => ($rule->isNegative ? '~' : '') . $op, 'rules' => static::exportRules($rule->branch), 'control' => $rule->control->getHtmlName()];
                if ($rule->branch->getToggles()) {
                    $item['toggle'] = $rule->branch->getToggles();
                } elseif (!$item['rules']) {
                    continue;
                }
            } else {
                $item = ['op' => ($rule->isNegative ? '~' : '') . $op, 'msg' => Validator::formatMessage($rule, FALSE)];
            }
            if (is_array($rule->arg)) {
                $item['arg'] = [];
                foreach ($rule->arg as $key => $value) {
                    $item['arg'][$key] = $value instanceof IControl ? ['control' => $value->getHtmlName()] : $value;
                }
            } elseif ($rule->arg !== NULL) {
                $item['arg'] = $rule->arg instanceof IControl ? ['control' => $rule->arg->getHtmlName()] : $rule->arg;
            }
            $payload[] = $item;
        }
        if ($payload && $rules->isOptional()) {
            array_unshift($payload, ['op' => 'optional']);
        }
        return $payload;
    }

 /** @deprecated */
 protected static function exportRules($rules)
 {
     trigger_error(__METHOD__ . '() is deprecated; use Nette\\Forms\\Helpers::exportRules() instead.', E_USER_DEPRECATED);
     return Nette\Forms\Helpers::exportRules($rules);
 }