我制作了一个自己的视图助手来获取外部图像（感谢 robert pflamm，请参阅来自外部资源的 Typo3 流体图像）。如果我只使用 ImageViewHelper 一切都在工作 finde。
但是如果我使用\TYPO3\CMS\Fluid\ViewHelpers\Uri\ImageViewHelper图像只渲染一次。与这里的TYPO3 版本相同的问题。7.6.2 - 条件 ViewHelpers 仅评估一次。但我不知道如何解决
有人可以帮忙吗？马丁
namespace Mwxxx\Mwxxx\ViewHelpers;
use TYPO3\CMS\Core\Utility\GeneralUtility;
use TYPO3\CMS\Fluid\ViewHelpers\Uri\ImageViewHelper;
use TYPO3\CMS\Core\Resource\FileInterface;
use TYPO3\CMS\Extbase\Domain\Model\AbstractFileFolder;
class ExternalImageViewHelper extends \TYPO3\CMS\Fluid\ViewHelpers\Uri\ImageViewHelper
{
const UPLOAD_DIRECTORY = 'upload';
const TEMP_PREFIX = 'Mwxx';
/**
* ResourceFactory
*
* @var \TYPO3\CMS\Core\Resource\ResourceFactory
* @inject
*/
protected $resourceFactory = null;
/**
* Resizes a given image (if required) and renders the respective img tag
*
* @see https://docs.typo3.org/typo3cms/TyposcriptReference/ContentObjects/Image/
*
* @param string $src a path to a file, a combined FAL identifier or an uid (integer). If $treatIdAsReference is set, the integer is considered the uid of the sys_file_reference record. If you already got a FAL object, consider using the $image parameter instead
* @param string $width width of the image. This can be a numeric value representing the fixed width of the image in pixels. But you can also perform simple calculations by adding "m" or "c" to the value. See imgResource.width for possible options.
* @param string $height height of the image. This can be a numeric value representing the fixed height of the image in pixels. But you can also perform simple calculations by adding "m" or "c" to the value. See imgResource.width for possible options.
* @param integer $minWidth minimum width of the image
* @param integer $minHeight minimum height of the image
* @param integer $maxWidth maximum width of the image
* @param integer $maxHeight maximum height of the image
* @param boolean $treatIdAsReference given src argument is a sys_file_reference record
* @param FileInterface|AbstractFileFolder $image a FAL object
*
* @return string
* @throws \Exception
* @throws \TYPO3\CMS\Core\Resource\Exception\InsufficientFolderAccessPermissionsException
* @throws \TYPO3\CMS\Core\Resource\Exception\InsufficientFolderWritePermissionsException
* @throws \TYPO3\CMS\Fluid\Core\ViewHelper\Exception
*/
public function render($src = null, $image = null, $width = null, $height = null, $minWidth = null, $minHeight = null, $maxWidth = null, $maxHeight = null, $treatIdAsReference = false)
{
if (filter_var($src, FILTER_VALIDATE_URL)) {
$storage = $this->resourceFactory->getDefaultStorage();
if (!$storage->hasFolder(self::UPLOAD_DIRECTORY)) {
$storage->createFolder(self::UPLOAD_DIRECTORY);
}
if (file_exists('fileadmin/upload/'.basename(basename($src)))) {
#echo "Die Datei $filename existiert";
$src = 'fileadmin/upload/'.basename(basename($src));
}
else {
$externalFile = GeneralUtility::getUrl($src);
if ($externalFile) {
$tempFileName = tempnam(sys_get_temp_dir(), self::TEMP_PREFIX);
$handle = fopen($tempFileName, "w");
fwrite($handle, $externalFile);
fclose($handle);
$uploadFolder = $storage->getFolder(self::UPLOAD_DIRECTORY);
#echo "Die Datei $filename existiert nicht";
$file = $uploadFolder->addFile($tempFileName, basename(basename($src)), 'changeName');
$src = $file->getPublicUrl();
#unlink($tempFileName);
} else {
throw new \Exception(sprintf('External URL % cannot accessed.', $src), 1473233519);
}
}
}
return parent::render($src, $image, $width, $height, $minWidth, $minHeight, $maxWidth, $maxHeight, $treatIdAsReference);
}
}