Dynamic Regions w/Train Component

Question

I'm working on a web app (JDeveloper 11g) where one page has a dynamic reqion with a task flow associated with it that sets the fragment for the view. Most of the fragments for this region use a page template with a train component. Navigation using the train component mostly works fine- the fragment is replaced by a new fragment each time a train link is clicked.
However, one fragment contains another dynamic region. I tried to set the scope of the bean managing this region to viewScope, but I get a popup message in the browser "viewScope.myManagedClass.dynamicTaskFlowId" is invalid" when I click the train component link for the fragment. I get a similar error if I set the scope of the bean to session or pageFlow. Only when I set the scope to backingBean or None do I avoid the error message.
But then another problem occurs. One of the fragments in the flow for the inner region has a panelAccordion with several showDetailItems consisting of selectManyCheckboxes. The panelAccordion doesn't list anything, and locks up if I try to open or close any showDetailItem. This behavior is similar to when the scope for the bean managing the flow is not set to viewScope or higher.
In stepping through the code, I noticed that the outer region's flow code runs after the inner region's trigger event code that sets the inner region's taskFlowId, but before the inner region's flow code, so the inner region's taskFlowId setting is lost. I tried throwing the setting into session context and retrieving it, and that almost works. If I actually select any of the selectManyCheckboxes, they are lost once I move to a different fragment in the inner region.
Does anybody have any ideas on how to I get this page working, alternatives to the approach I'm taking, settings I should check, and/or any reference material I could consult?
Thanks in advance!
Edited by: tmurphy on Jul 6, 2010 3:30 PM

Answer 1

Hi,
However, one fragment contains another dynamic region. I tried to set the scope of the bean managing this region to viewScope, but I get a popup message in the browser "viewScope.myManagedClass.dynamicTaskFlowId" is invalid" when I click the train component link for the fragment.
Is the managed bean defined in the metadata definition of the bounded taskflow that you load ? Note that bounded task flows are only initializing their managed beans when they are loaded. If you define the managed bean in the parent bounded task flow then the viewScope also is the one of the parent flow. Appears as if this is the problem you describe
Frank