[BUG] Multi-View not working correctly

[beatrycze-volk]

Description

Class parameter documentArray is null if document is accessed by uid.

Reproduction

Steps to reproduce the behaviour:

1. Install TYPO3 11.x with PHP 8.x
2. Click on link to display document page e.g. https://sachsendigital.ddev.site
3. See error

Expected Behavior

The documentArray parameter should be assigned for each type of document, not only ones accessed by URL.

Screenshots and Examples

Environment

• RDBMS version: MariaDB 10.3
• TYPO3 version: 11.5.37
• PHP version: 8.2

Additional Context

The function getDocumentByUid is not adjusted:

    private function getDocumentByUid(int $documentId)
    {
        $doc = null;
        $this->document = $this->documentRepository->findOneByIdAndSettings($documentId);

        if ($this->document) {
            $doc = AbstractDocument::getInstance($this->document->getLocation(), $this->settings, true);
        } else {
            $this->logger->error('Invalid UID "' . $documentId . '" or PID "' . $this->settings['storagePid'] . '" for document loading');
        }

        return $doc;
    }

The function getDocumentByUrl has necessary adjustments:

    protected function getDocumentByUrl(string $documentId)
    {
        $doc = AbstractDocument::getInstance($documentId, $this->settings, true);

        if (isset($this->settings['multiViewType']) && $doc->tableOfContents[0]['type'] === $this->settings['multiViewType']) {
            $childDocuments = $doc->tableOfContents[0]['children'];
            $i = 0;
            foreach ($childDocuments as $document) {
                $this->documentArray[] = AbstractDocument::getInstance($document['points'], $this->settings, true);
                if (!isset($this->requestData['docPage'][$i]) && isset(explode('#', $document['points'])[1])) {
                    $initPage = explode('#', $document['points'])[1];
                    $this->requestData['docPage'][$i] = $initPage;
                }
                $i++;
            }
        } else {
            $this->documentArray[] = $doc;
        }
        .....

        return $doc;
  }

[sebastian-meyer]

Re-opening this, because #1345 was only a temporary fix. Multi-View still isn't completely implemented!

See also comments in

kitodo-presentation/Classes/Controller/AbstractController.php

Lines 517 to 541 in c014e8f

	/**
	* Get document from repository by uid.
	*
	* @access private
	*
	* @param int $documentId The document's UID
	*
	* @return AbstractDocument
	*/
	private function getDocumentByUid(int $documentId)
	{
	// TODO: implement multiView as it is in getDocumentByUrl
	$doc = null;
	$this->document = $this->documentRepository->findOneByIdAndSettings($documentId);
	if ($this->document) {
	$doc = AbstractDocument::getInstance($this->document->getLocation(), $this->settings, true);
	// fix for count(): Argument #1 ($value) must be of type Countable|array, null given
	$this->documentArray[] = $doc;
	} else {
	$this->logger->error('Invalid UID "' . $documentId . '" or PID "' . $this->settings['storagePid'] . '" for document loading');
	}
	return $doc;
	}