[Typo3-dev] Where is my "addRootLineFields" field?

[Davide Principi]

Hi all,
I need an help. I'm trying to read a field from the rootline-array using
getRootLine(), added on "addRootLineFields" in my ext_tables.php.

The rootline I want to scan is not the "current" one, so I make another 
instance of pageselect in this way:

     $sys_page = t3lib_div::makeInstance('t3lib_pageSelect');
     $sys_page->init(true);
     $rootline = $sys_page->getRootLine($page_id);

     foreach($rootline as $item) {
       if($item['my_field'] > 0) {
         return $item['my_field'];
       }
     }


...where $page_id is the arbitrary page uid.  Note that the current page 
uses cHash, so different versions of the page are possible.

It works the FIRST time Typo3 generates the page and store it in the 
cache: my_field is present and the function returns the value.

But on next request it seems there is not "addRootLineFields" at all. 
There is a side effect on the cached version of the page.  Seems GLOBALS 
are not available as on the first time.

Any suggestion?

Thank you in advance,
--Davide Principi (dabba)