40 lines
734 B
PHP
40 lines
734 B
PHP
<?php
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namespace SilverStripe\VersionFeed\Filters;
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use SilverStripe\Core\Config\Config;
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/**
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* Caches results of a callback
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*/
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class CachedContentFilter extends ContentFilter {
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/**
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* Enable caching
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*
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* @config
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* @var boolean
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*/
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private static $cache_enabled = true;
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public function getContent($key, $callback) {
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$cache = $this->getCache();
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// Return cached value if available
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$cacheEnabled = Config::inst()->get(get_class(), 'cache_enabled');
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$result = (isset($_GET['flush']) || !$cacheEnabled)
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? null
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: $cache->load($key);
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if($result) return $result;
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// Fallback to generate result
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$result = parent::getContent($key, $callback);
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$cache->save($result, $key);
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return $result;
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}
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}
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