Thanks for the reply, I'm using RC2, and my app is originally based on
one of the CD apps in contrib-examples (the one with annotations) from
the b4 timeframe.
In my base page, I redirect to a sign-in page which adds the user object
to my session. I then try to use this object in a page which extends the
base page.
If I link directly to a page (via setHomePage() or bookmark) that
accesses the session, my session user object is still null and the page
fails to render (due to the null pointer exception in my panel code).
If I first link to a page that doesn't use the session variable, and
_then_ link to a page that does everything works as expected. So it
seemed as though checkAccess() wasn't being called until after the page
rendered.
I'll take a look with more alert eyes in case there are any lingering
issues with the demo code (or at least any I can understand:). I'm also
going to try catching the null exception, I expect they won't see data
on the first page they visit but at least it won't crash.
Here is a more complete version of the relevant code in case it helps...
>From base page:
protected boolean checkAccess()
{
//((VSecureSession)getSession()).authenticate("admin",
"admin"); //DEBUG
boolean signedIn = ((VSecureSession)getSession()).isSignedIn();
if(!signedIn){
redirectTo(newPage(SignIn.class));
}
return signedIn;
}
>From my session:
public final boolean authenticate(final String username, final String
password)
{
if (user == null)
{
inUser = ((VSecureRequestCycle)
getRequestCycle()).getDao().getUser(username);
if((in.getPassword()).equalsIgnoreCase(password)){
this.user = in;
return true;
}
return user != null;
}
And the line in the sub page (which causes the null pointer):
Long userId =
(((VSecureSession)getSession()).getUser()).getId();
add(new EventListPanel("eventList", userId));
Thanks,
Troy
On Thu, 2005-06-10 at 11:00 +0200, Johan Compagner wrote:
> checkAccess() is the first thing that happens before a page is
> rendered
> see Page.doRender():
>
> public final void doRender()
> {
> if (checkAccess())
> {
> /// Page get rendered
>
> So what do you exactly see? What version of wicket do you use?
>
> On 10/6/05, Troy MacNeil <[EMAIL PROTECTED]> wrote:
> Is there a way to call a method before any page rendering
> takes place?
>
> When my user logs in, checkAccess() redirects them to a sign
> in page
> which adds their information to the session for later access.
> This works
> well until I try to go directly (before login) to a
> (Bookmarkable) page
> that uses this session information.
>
> After investigating it seems that the entire page is rendered
> before
> calling checkAccess()? Which in my case leads to numerous null
> pointer
> exceptions since the session data is uninitialized.
>
> I've tried overriding various methods to call checkAccess()
> earlier in
> the process but without any luck. I'm sure there is a very
> simple
> answer, but it's getting very late and I've been at this for a
> while so
> any help would be _greatly_ appreciated.
>
> Thanks,
> Troy
>
>
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