Prado\Web\UI\TPage::determinePostBackMode PHP Метод

    private function determinePostBackMode()
    {
        $postData = $this->getRequest();
        if ($postData->contains(self::FIELD_PAGESTATE) || $postData->contains(self::FIELD_POSTBACK_TARGET)) {
            $this->_postData = $postData;
        }
    }