This is one of the cases where it would be really really sweet to be able to
extend components, including specifications...
On 3/2/06, Geoff Longman <[EMAIL PROTECTED]> wrote:
>
> You could craft your own Form component that handles the hidden and
> use the tapestry-flash thingy to save the token
>
> Geoff
>
> On 3/2/06, Inge Solvoll <[EMAIL PROTECTED]> wrote:
> > I've tried to copy the token-approach from struts into Tapestry, to
> avoid
> > crashes when the user hits the "refresh"-button in the browser. Using
> this
> > approach, the html rendered can only be submitted once. My problem is
> that
> > the code I've written so far requires too much code copying and
> repeating,
> > and I was wondering if someone has ideas on how to make the
> implementation a
> > bit less intrusive for my pages.
> >
> > I could include this code in my base class that all my page classes
> inherit
> > from, but then I would have to inject WebRequest into every single page
> in
> > my application, and that's not the tapestry way to do page design, is
> it?
> > I'm pretty sure that this is functionality that I need in all my pages
> > (refresh of a post causes crash most of the times in my tapestry code).
> > Maybe this can be done with a servlet filter, or better, with a HiveMind
> > service that intercepts the request?
> >
> > Here's my code so far:
> >
> > public void pageBeginRender(PageEvent event) {
> > if (getRequestCycle().isRewinding()) {
> > String token = getRequest().getParameter("token");
> > if (token == null || !token.equals(getToken())) {
> > log.error("Token for page is not valid, redirect to obtain last
> good
> > state");
> > throw new PageRedirectException(this);
> > }
> > }
> > else {
> > setToken(generateToken());
> > }
> >
> > }
> >
> > .html:
> > <input jwcid="@Any" type="hidden" name="token" value="ognl:token"/>
> >
> > .page:
> > <property name="token" persist="session"/>
> >
> >
> > An article on the subject:
> > http://www.javalobby.org/java/forums/m91956568.html
> >
> >
>
>
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