Re: How to remove all previous pages from pagemap

[Matthias Keller]

On 2011-01-25 18:20, Jeremy Thomerson wrote:

On Tue, Jan 25, 2011 at 11:14 AM, Matthias Keller wrote

Hi List

We've got the following scenario:
After a user hopped through a wizard, he'll reach a confirmation page in
our workflow. Now the session still needs to remain active but I want to
prohibit going back into the wizard and resend it again.
I experimented with  Session.clear()  and  Session.getPageMaps() and
calling pageMap.remove() on each instance returned, to no avail - after
clicking back, the user may still access the wizard again.

What's the correct way to 'expire' *all* previous pages so that going back
using the back-button is not possible anymore? And, where do I need to put
that specific code (at the end of the wizard after calling
setResponsePage(), in the onInitialize() of the confirmation page, ... ?

  Have you looked at IPageMap#clear()?  I'm not 100% sure where you are able
to put it.  I think you could put it just before calling setResponsePage.
  Not after, though (since setResponsePage throws an exception that stops
processing, your code wouldn't get called after it.)

Session.clear() does just this, it visits all pagemaps and calls clear() on them. Though this seems to clear up some things (when I get all pagemaps afterwards programmatically, they're gone), I can still go back with the back button and reload the pages as often as I like. BTW, setResponsePage() does not throw any exceptions (at least not for 1.4.X), it just stores the nexxt page somewhere in the RequestCycle for later usage.

It would be great if someone with deeper pagemaps-knowledge could chime in to find out the right place and way to clear all old pages...

Is there some cool debugging feature or call I'd could do to see all the

pages in the pagemaps with their versions et al in order to find out what to
call to clear that...

Add a dependency to wicket-devutils and then in your base page (hopefully
you have a base page for all your pages), add a DebugBar.  That will have
some links to the inspector, etc...

Thanks, I'll give it a shot this afternoon

Matt

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