[TYPO3-english] How do i add parameters to an url ? Combining two extensions on one page with URL paramters ?

[Christoph Stadler]

Hello,

i am working with two extensions i want to combine on one page. The 
problem is that the url for the page of each record from the first 
extension (realty) is dynamically generated from the extensions list 
view, what i would like to do is to add an additional parameter to the 
url so that the second extension (flatmanager) can also display the info 
from a specific record.

So i have two pages this applies to:

List View: generated by the realty extension this provides a list of the 
records with a link to single view of each record

Single View: this page displays the details of one record. the url for 
one of these is:

http://mydomain.com/index.php?id=26&tx_realty_pi1[showUid]=54&tx_realty_pi1[listViewLimitation]=YToxOntzOjM6InVpZCI7aTowO30%3D&tx_realty_pi1[listUid]=47&tx_realty_pi1[listViewType]=realty_list&tx_realty_pi1[recordPosition]=0&cHash=183ebe1bcdb88a405260160a1131108e

I've added the extension for the second extension to this page and by 
using the parameter:

&tx_flatmgr_pi1[flat]=myflatmanagerID at the end of the previous url the 
page works and displays the record i want on the same page.

How can i get the URL of the single view append the paramaeter for my 
second extension ? Do i need to hack the source of the realty extension 
? Or can it be done with typoscript in the template ? Or can this be 
done with realurl ?

I really don't know how to approach this, would be thankfull fro any 
tips or help ...