110 lines
2.7 KiB
PHP
110 lines
2.7 KiB
PHP
<?php
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if (class_exists('Widget')) {
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/**
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* Presents a list of items from an RSS feed url
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*
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* @package blog
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*/
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class RSSWidget extends Widget {
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private static $db = array(
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"RSSTitle" => "Text",
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"RssUrl" => "Text",
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"NumberToShow" => "Int"
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);
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private static $defaults = array(
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"NumberToShow" => 10,
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"RSSTitle" => 'RSS Feed'
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);
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private static $cmsTitle = "RSS Feed";
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private static $description = "Downloads another page's RSS feed and displays items in a list.";
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/**
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* If the RssUrl is relative, convert it to absolute with the
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* current baseURL to avoid confusing simplepie.
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* Passing relative URLs to simplepie will result
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* in strange DNS lookups and request timeouts.
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*
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* @return string
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*/
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function getAbsoluteRssUrl() {
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$urlParts = parse_url($this->RssUrl);
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if(!isset($urlParts['host']) || !$urlParts['host']) {
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return Director::absoluteBaseURL() . $this->RssUrl;
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} else {
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return $this->RssUrl;
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}
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}
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function getCMSFields() {
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$fields = parent::getCMSFields();
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$fields->merge(
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new FieldList(
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new TextField("RSSTitle", _t('RSSWidget.CT', "Custom title for the feed")),
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new TextField("RssUrl", _t(
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'RSSWidget.URL',
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"URL of the other page's RSS feed. Please make sure this URL points to an RSS feed."
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)),
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new NumericField("NumberToShow", _t('RSSWidget.NTS', "Number of Items to show"))
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)
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);
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$this->extend('updateCMSFields', $fields);
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return $fields;
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}
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function Title() {
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return ($this->RSSTitle) ? $this->RSSTitle : _t('RSSWidget.DEFAULTTITLE', 'RSS Feed');
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}
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function getFeedItems() {
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$output = new ArrayList();
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// Protection against infinite loops when an RSS widget pointing to this page is added to this page
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if(stristr($_SERVER['HTTP_USER_AGENT'], 'SimplePie')) {
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return $output;
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}
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if(!class_exists('SimplePie')) {
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throw new LogicException(
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'Please install the "simplepie/simplepie" library by adding it to the "require" '
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+ 'section of your composer.json'
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);
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}
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$t1 = microtime(true);
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$feed = new SimplePie();
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$feed->set_feed_url($this->AbsoluteRssUrl);
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$feed->set_cache_location(TEMP_FOLDER);
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$feed->init();
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if($items = $feed->get_items(0, $this->NumberToShow)) {
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foreach($items as $item) {
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// Cast the Date
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$date = new Date('Date');
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$date->setValue($item->get_date());
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// Cast the Title
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$title = new Text('Title');
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$title->setValue(html_entity_decode($item->get_title()));
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$output->push(new ArrayData(array(
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'Title' => $title,
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'Date' => $date,
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'Link' => $item->get_link()
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)));
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}
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return $output;
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}
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}
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}
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}
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