On Thu, Mar 4, 2010 at 4:26 PM, andythedestroyer <andythedestro...@gmail.com
> wrote:
> Ok Wow. Sometimes you really impress me dpp. That worked. I don't
> think I ever would have figured that out but now that I see it I see
> what is going on. I have never used HighLevelSessionDispatcher before
> though.. I need to go though the code and learn that one.
>
Nobody but me (and now you) that I know of ever used
highLevelSessionDispatch.
I added the feature when we were working on some code back in the
CircleShare day that had to go out to an external service and then have a
return URL which contained state. Being able to define a throw-away URL was
the best answer.
Please add this to the wiki.
>
> Good stuff. Thanks again you smart smart man.
>
<blush/>
>
> -Andy
>
> On Mar 4, 3:56 pm, David Pollak <feeder.of.the.be...@gmail.com> wrote:
> > On Thu, Mar 4, 2010 at 2:00 PM, andythedestroyer <
> andythedestro...@gmail.com
> >
> >
> >
> > > wrote:
> > > Hello,
> >
> > > I have a simple use case where there is a 2 page form wizard then a
> > > redirect to a third party ( for some external validation ) which
> > > redirects back to a third and final page of the wizard.
> >
> > > I know I could just use snippets and SessionVars to manage this but I
> > > have been using StatefullSnippets and would like to try to solve this
> > > problem rather than accept failure and use another method.
> >
> > > I pass the url for the third page to the third party to redirect to
> > > when their work is done. The problem is the snippet state is lost
> > > after the redirect. I have tried many different things and it seems
> > > like something like this should work.
> >
> > > // in the processing done before redirect to third party.
> > > // assemble the return path url.
> >
> > > class Wizard extends StatefulSnippet with Logger {
> > > ....
> > > def doRedirect = {
> > > val returnPath = urlEncode(S.hostAndPath + ( link("/lastPage", () =>
> > > redirectTo("/lastPage"), NodeSeq.Empty) \ "@href).text)
> >
> > > redirectTo( third_party_url +"?return=" + returnPath)
> > > }
> > > }
> >
> > Try:
> >
> > def doRedirect {
> > val tmp = Helpers.randomString(20)
> >
> > S.addHighLevelSessionDispatcher("wizard", {
> > case Req(List(tmp), _, _) => () => {
> > S.removeHighLevelSessionDispatcher("wizard")
> > redirectTo("/lastPage")
> > }
> > }
> >
> > val returnPath= urlEncode(S.hostAndPath + tmp)
> >
> > S.redirectTo(third_party_url+"?return=" + returnPath)
> >
> > }
> >
> > The high level session dispatcher was built for this very reason...
> further,
> > the return URL is random and only associated with the current session so
> it
> > makes hijacking any information or redirecting other sessions back to the
> > URL a non-issue.
> >
> > Thanks,
> >
> > David
> >
> >
> >
> > > This does generate a return path like "http://localhost:8080/lastPage?
> > > F1151306194165AHF=_" , however all state is gone after the third party
> > > redirects back to the site, however if I don't redirect to the third
> > > party and instead redirect the "val returnPath" I construct directly,
> > > state is maintained.
> >
> > > Is it possible to resume my StatefulSnippet? Or shall I just use
> > > something else?
> >
> > > Thanks to all who read and or respond.
> >
> > > -Andy
> >
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> > --
> > Lift, the simply functional web frameworkhttp://liftweb.net
> > Beginning Scalahttp://www.apress.com/book/view/1430219890
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