$jslink

[Ed...@swisscom.com]

I have big problems in understanding the $jslink concept. I have seen, how it ist used in the administration portelts and tried to build my own little example. Here I try to calculate a value in my first portlet and send it to a second portlet. But it doesn't work. The value is always sent to the first portlet. Can somebody tell me, where I can find a good documentation about that thing (beside the template example -> velocity docs! ) or tell me, how I can send the data to the second portlet WHITHOUT USING A FORM!!!

I'm using Jetspeed 1.4b4
My portlet only consists of velocity templates. There are no action classes!

Here is my velocity template code:

First Portlet (name=Forum)

#set ( $mode = $data.getRequest().getParameter("mode") )
<p>
  #if (!$mode)
    #set ($mode = 1)
  #end
  Start with $mode
  #set ($result=$mode+1)
<br>
<a href="$jslink.getPaneByName("ForumEntry").addQueryData("mode",$result)">Edit</a>


Second Portlet (name=ForumEntry)

#set ( $mode = $data.getRequest().getParameter("mode") )
Number $mode
<br>
<a href="$jslink.getPaneByName("Forum")>Back</a>


This is the result after the first call:

Start with 1 
Edit <http://localhost:8080/jetspeed5/portal/media-type/html/user/admin/page/default.psml/js_panename/ForumEntry?mode=2> 


This is the result after a single click on "Edit":

Start with 2 

	

 <org.apache.turbine.util.TurbineException: Error rendering Velocity template: /portlets/html/forum_home.vm: Invocation of method 'addQueryData' in  class org.apache.turbine.util.DynamicURI threw exception class java.lang.NullPointerException : null          </td>



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