[TYPO3-dev] Pre or post processing data map

[Tapio Markula]

Hi

In order to force saving form fields with certain values (in my case
field 'hidden'),  the most reasonable way is using pre or post 
processing using hook for class.tx_t3lib_tcemain.php


I took hook definition from another plugin and tried to use
following in my extension

require_once(t3lib_extMgm::extPath($_EXTKEY).'class.tx_t3lib_tcemain.php');
$GLOBALS['TYPO3_CONF_VARS']['SC_OPTIONS']['t3lib/class.t3lib_tcemain.php']['processDatamapClass'][] 
= 'tx_t3lib_tcemain_process_datamap';


...
and hook file

/**
      * Hook for pre processing the incoming fieldArray
      *
      * @param    array        Incoming field array
      * @param    string        Table
      * @param    integer        UID
      * @param    object        Calling (Parent) Object
      * @return    void
      */
     function processDatamap_preProcessFieldArray(&$incomingFieldArray, 
$table, $id, $calling_obj)    {
         $myGET=t3lib_div::_GET();

         if (($table=='tt_content' || 
$table=='pages')&&is_array($incomingFieldArray) && 
isset($myGET['publish']))
             $incomingFieldArray['hidden']=    $myGET['publish'];
     }
doesn't do anything - pre or post processin is however the *only 
reasonable* possibility to handle this issue - or that should be postprocess

thied also
processDatamap_postProcessFieldArray
No effect.
I just don't figure why neither pre of post processing doesn't do anything.