contributions/page.cacheheaders/view/base/cacheheaderspageview.cls.php

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00001 <?php
00002 /**
00003  * An overloaded PageView to serve other cache headers
00004  * 
00005  * @author Gerd Riesselmann
00006  * @ingroup CacheHeaders
00007  */
00008 class CacheHeadersPageView extends PageViewBase {
00009         /**
00010          * Send cache control headers for cache
00011          *
00012          * @param $lastmodified A timestamp 
00013          * @param $expires A timestamp
00014          * @param $max_age Max age in seconds
00015          */
00016         protected function send_cache_headers($lastmodified, $expires, $max_age = 600, $etag = '') {
00017                 $max_age = intval($max_age);
00018                 GyroHeaders::remove('Pragma');
00019                 GyroHeaders::set('Last-Modified', GyroDate::http_date($lastmodified), true);
00020                 GyroHeaders::set('Expires', GyroDate::http_date($expires), true);
00021                 GyroHeaders::set('Etag', $etag, true);
00022                 switch (Config::get_value(ConfigCacheHeaders::CACHE_POLICY)) {
00023                         case ConfigCacheHeaders::RIGID_FRESHNESS:
00024                         default:
00025                                 GyroHeaders::set('Cache-Control', "private, must-revalidate,max-age=0", true);          
00026                 }               
00027         }
00028 }