[TASK] Evaluate possibility to control list/detail page cache

[derhansen]

Evaluate possibility to control list/detail page cache, so registration links will not be shown when registration deadline / startdate is reached.

[christophlehmann]

That's a very good idea. I digged into it and came to the conclusion, that is does not work at the moment.

The TypoScriptController has a hook which modifies the cache timeout, but it's executed before the extbase controller and the result is cached.

Later in TYPO3\CMS\Frontend\Controller\TypoScriptFrontendController::realPageCacheContent() is a hook $GLOBALS['TYPO3_CONF_VARS']['SC_OPTIONS']['tslib/class.tslib_fe.php']['usePageCache'], but it can’t modify the cache lifetime variable.

The page cache is instantiated very early so we can not override it's configuration.

I think we need a new hook.

[derhansen]

I have already put some wirk into this topic and it seems that there already is a hook for that.

$GLOBALS['TYPO3_CONF_VARS']['SC_OPTIONS']['tslib/class.tslib_fe.php']['get_cache_timeout']

We can use this hook to calculate the cache lifetime depending on a TypoScript configuration similar to config.cache. The integrator has to define which PIDs should be taken into account for the page cache lifetime calculation. Then, we use getFirstTimeValueForRecord() to calculate the page cache lifetime depending on starttime/stoptime (TYPO3 default) and additionally adjust the page cache lifetime depending on the registration start date and deadline.

[derhansen]

The feature has been implemented in the development branch for version 5.x and has also been backported to the 4.x version of the extension.