Uncaught exception ‚Exception‘ with message ‚Serialization of ‚SimpleXMLElement‘ is not allowed‘

David Matějka napsal(a):

a proc chces do session ukladat cele xml? nebude ti stacit cesta?

puvodne jsem chtěl jen cestu, ale tmp cesta po redirecru na stránku renderExport je NULL

public function loadFormSucceeded(Form $form) {
    $values = $form->getValues();

    try {
        $xml_1_path = $values->xml_1->getTemporaryFile();
        $xml_2_path = $values->xml_2->getTemporaryFile();

        $this->sessionSection->xml = $this->merger->loadData($xml_1_path, $xml_2_path);

        $this->redirect("Homepage:export");
    } catch (Nette\InvalidArgumentException $e) {
        $this->flashMessage($e->getMessage(), "error");
        $this->redirect("Homepage:default");
    }
}

public function renderExport() {

    try {

        $xml_string = $this->merger->mergeXml($this->sessionSection->xml->1, $this->sessionSection->xml->2);
        $this->template->text = 'Data';
        $this->merger->export($xml_string);

    } catch (Nette\InvalidArgumentException $e) {
        $this->flashMessage($e->getMessage(), "danger");
        $this->redirect("Homepage:default");
    }
}

Tohle všechno dělám jen kvuli tomu aby se mi na stránce export zobrazila hláška že byl soubor vyexportován a poté přes

public function export($xml_string) {

    // force download
    header("Content-Type: application/force-download");
    header("Content-Type: application/octet-stream");
    header("Content-Type: application/download");

    // disposition / encoding on response body
    header('Content-Disposition: attachment; filename=export_kontrolni_hlaseni-' . (new DateTime)->format('Y_m_d') . '.xml');
    header("Content-Transfer-Encoding: binary");
    header("Cache-control: private"); //use this to open files directly
    header('Expires: 0');
    header("Pragma: no-cache");
    header("Connection: close");

    echo $xml_string;

    $this->terminate();
}

Nabídnu soubor k uložení, bohužel na export latte se to vůbec nepřeredirectuje
XML objekt uložím do session takhle (je to spíš string objektu) $this->xml_lkn->asXML(); a pak jej ze session načtu takto simplexml_load_string($this->sessionSection->xml->lkn)

Celou dobu mi jde jen o to aby po kliknutí na submit (onSuccess), načetl data z formuláře jinde, kde nabídnu i soubor ke stažení

EDIT
Napsal jsem si XmlResponse

<?php

namespace App\Model;

use Nette;

/**
 * Description of XmlResponse
 *
 * @author xxx
 */
class XmlResponse extends Nette\Object implements Nette\Application\IResponse {

    /** @var mixed */
    private $source;

    /** @var bool */
    private $forceDownload;

    /** @var string */
    private $name;

    /** @var string */
    private $contentType;

    /**
     * @param  mixed  renderable variable
     */
    public function __construct($source, $name = NULL, $contentType = NULL, $forceDownload = TRUE) {
        $this->source = $source;
        $this->name = $name;
        $this->contentType = $contentType ? $contentType : 'application/octet-stream';
        $this->forceDownload = $forceDownload;
    }

    /**
     * Returns the file name.
     * @return string
     */
    public function getName() {
        return $this->name;
    }

    /**
     * Returns the MIME content type of a downloaded file.
     * @return string
     */
    public function getContentType() {
        return $this->contentType;
    }

    /**
     * @return mixed
     */
    public function getSource() {
        return $this->source;
    }

    /**
     * Sends response to output.
     * @return void
     */
    public function send(Nette\Http\IRequest $httpRequest, Nette\Http\IResponse $httpResponse) {

        $httpResponse->setHeader('Content-Disposition', ($this->forceDownload ? 'attachment' : 'inline')
                . '; filename="' . $this->name . '"'
                . '; filename*=utf-8\'\'' . rawurlencode($this->name));

        $httpResponse->setContentType($this->contentType);

        $httpResponse->setHeader('Pragma', "public");
        $httpResponse->setHeader('Expires', 0);
        $httpResponse->setHeader('Cache-Control', "must-revalidate, post-check=0, pre-check=0");
        $httpResponse->setHeader('Content-Transfer-Encoding', "binary");
        $httpResponse->setHeader('Content-Description', "File Transfer");
        $httpResponse->setHeader('Content-Length', strlen($this->source));

        if ($this->source instanceof Nette\Application\UI\ITemplate) {
            $this->source->render();
        } else {
            echo $this->source;
        }

    }

}

který jsem si chtěl zavolat v modelu Merge metodě export(), jenže v modelu neznám sendResponce

//$this->sendResponse(new XmlResponse($xml_string, 'merge.xml', array('application/octet-stream', 'application/force-download', 'application/download')));
        return (new XmlResponse($xml_string, 'merge.xml', array('application/octet-stream', 'application/force-download', 'application/download')));

takže si vracím objekt do presenteru kde si volám v renderExport

           $this->sendResponse($this->merger->export($xml_string));
$this->terminate();

Od prohlížeče obdržím GET http://server/xml_merger/homepage/export net::ERR_INVALID_RESPONSE
a to se snažím už 4 dny zprovoznit aby mi nette stahovalo soubory ze serveru

Soubor s dialog oknem dostanu pokud mám ve fci export třídy MargeManager toto

// force download
       header("Content-Type: application/force-download");
       header("Content-Type: application/octet-stream");
       header("Content-Type: application/download");

       // disposition / encoding on response body
       header('Content-Disposition: attachment; filename=export_kontrolni_hlaseni-' . (new DateTime)->format('Y_m_d') . '.xml');
       header("Content-Transfer-Encoding: binary");
       header("Cache-control: private"); //use this to open files directly
       header('Expires: 0');
       header("Pragma: no-cache");
       header("Connection: close");

       echo $xml_string;
       exit();

Tedy chci pouze 2 věci:

1. Po odeslání formuláře vyrenderovat export page a ihned poté vygenerovat okno se staženám sloučeného souboru
2. Generovat soubor ze serveru pomocí Nette

Editoval Joacim (23. 2. 2016 13:20)