TYPO3 TCA execute hook after object save in backend

Question

I want to manipulate some values and execute a custom function if an object is saved trought the backend. I found through my google search that I have to specify this in my

Answer 1

Register your hook class in local configuration (ext_localconf.php):

$GLOBALS ['TYPO3_CONF_VARS']['SC_OPTIONS']['t3lib/class.t3lib_tcemain.php']['processDatamapClass'][''] = 'NXS\\NxsReferenzen\\Hook\\TCEmainHook';
$GLOBALS ['TYPO3_CONF_VARS']['SC_OPTIONS']['t3lib/class.t3lib_tcemain.php']['processCmdmapClass'][''] = 'NXS\\NxsReferenzen\\Hook\\TCEmainHook';

Ensure your hook class has namespace declaration:

<?php
namespace NXS\NxsReferenzen\Hook;

class TCEmainHook {
    public function processCmdmap_postProcess($command, $table, $id, $value, \TYPO3\CMS\Core\DataHandling\DataHandler &$pObj) {
        echo '<pre>';
        var_dump($command);
        echo '<pre>';
        die();
    }
}