[TYPO3-dev] Re: TypoScript DataProcessors

[David Bruchmann]

The important snippet you posted is this:

pidInList {
    dataWrap = DB:pages:{field:related_page}:pid
    wrap3 = {|}
    insertData=1
}

try inserting first statically a list of pids like:

pidInList = 3,4,5,6

The pids you insert in my example surly must represent pages with fitting data for that case.
If this is working you can think about filling this variable dynamically. 

If you get the pids from user-input you should respect the security guide https://docs.typo3.org/typo3cms/SecurityGuide/GuidelinesIntegrators/Typoscript/Index.html
so in your case between the brackets should be placed "intval = 1" else your database could be in danger being hacked.