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<?php |
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declare(strict_types=1); |
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/* |
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* This file is part of the TYPO3 CMS project. |
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* |
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* It is free software; you can redistribute it and/or modify it under |
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* the terms of the GNU General Public License, either version 2 |
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* of the License, or any later version. |
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* |
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* For the full copyright and license information, please read the |
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* LICENSE.txt file that was distributed with this source code. |
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* |
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* The TYPO3 project - inspiring people to share! |
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*/ |
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namespace TYPO3\CMS\Dashboard\Widgets; |
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use TYPO3\CMS\Core\Cache\Frontend\FrontendInterface as Cache; |
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use TYPO3\CMS\Core\Utility\GeneralUtility; |
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use TYPO3\CMS\Fluid\View\StandaloneView; |
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/** |
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* Concrete RSS widget implementation |
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* |
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* The widget will show a certain number of items of the given RSS feed. The feed will be set by the feedUrl option. You |
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* can add a button to the widget by defining a button provider. |
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* |
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* The following options are available during registration: |
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* - feedUrl string Defines the URL or file providing the RSS Feed. |
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* This is read by the widget in order to fetch entries to show. |
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* - limit int default: 5 Defines how many RSS items should be shown. |
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* - lifetime int default: 43200 Defines how long to wait, in seconds, until fetching RSS Feed again |
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* |
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* @see ButtonProviderInterface |
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*/ |
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class RssWidget implements WidgetInterface |
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{ |
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/** |
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* @var WidgetConfigurationInterface |
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*/ |
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private $configuration; |
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/** |
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* @var StandaloneView |
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*/ |
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private $view; |
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/** |
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* @var Cache |
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*/ |
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private $cache; |
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/** |
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* @var array |
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*/ |
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private $options; |
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/** |
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* @var ButtonProviderInterface|null |
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*/ |
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private $buttonProvider; |
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public function __construct( |
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WidgetConfigurationInterface $configuration, |
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Cache $cache, |
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StandaloneView $view, |
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$buttonProvider = null, |
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array $options = [] |
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) { |
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$this->configuration = $configuration; |
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$this->view = $view; |
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$this->cache = $cache; |
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$this->options = array_merge( |
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[ |
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'limit' => 5, |
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'lifeTime' => 43200 |
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], |
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$options |
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); |
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$this->buttonProvider = $buttonProvider; |
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} |
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public function renderWidgetContent(): string |
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{ |
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$this->view->setTemplate('Widget/RssWidget'); |
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$this->view->assignMultiple([ |
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'items' => $this->getRssItems(), |
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'options' => $this->options, |
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'button' => $this->buttonProvider, |
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'configuration' => $this->configuration, |
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]); |
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return $this->view->render(); |
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} |
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protected function getRssItems(): array |
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{ |
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$cacheHash = md5($this->options['feedUrl']); |
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if ($items = $this->cache->get($cacheHash)) { |
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return $items; |
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} |
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$rssContent = GeneralUtility::getUrl($this->options['feedUrl']); |
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if ($rssContent === false) { |
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throw new \RuntimeException('RSS URL could not be fetched', 1573385431); |
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} |
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$previousValueOfEntityLoader = null; |
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if (PHP_MAJOR_VERSION < 8) { |
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$previousValueOfEntityLoader = libxml_disable_entity_loader(true); |
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} |
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$rssFeed = simplexml_load_string($rssContent); |
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if (PHP_MAJOR_VERSION < 8) { |
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libxml_disable_entity_loader($previousValueOfEntityLoader); |
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} |
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$items = []; |
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foreach ($rssFeed->channel->item as $item) { |
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$items[] = [ |
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'title' => trim((string)$item->title), |
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'link' => trim((string)$item->link), |
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'pubDate' => trim((string)$item->pubDate), |
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'description' => trim((string)$item->description), |
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]; |
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} |
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usort($items, function ($item1, $item2) { |
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return new \DateTime($item2['pubDate']) <=> new \DateTime($item1['pubDate']); |
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}); |
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$items = array_slice($items, 0, $this->options['limit']); |
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$this->cache->set($cacheHash, $items, ['dashboard_rss'], $this->options['lifeTime']); |
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return $items; |
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} |
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} |
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TYPO3 /
TYPO3.CMS
