Hello
I'm trying to implement in Cocoon a somewhat standard web behaviour:
at the end of a form (final POST request, form fully validated, etc.)
I'd like to redirect the user to a GET request before showing him the
final 'Thank you' page.
This is often done in web programming, so that in case the user
reloads the result page, he will just reload the page itself, and not
execute the form logic twice. The browsers use this interpretation
too, by showing the user a warning "The form action will be executed
again if you reload. Are you sure? Yes/No" when you try to reload a
POST page.
I thought this would be easy to accomplish with continuations, but I'm
hitting a strange bug. This is the utility function I'm calling from
my flows, AFTER the form has been processed (DB inserts, emails sent,
etc), just BEFORE doing the sendPage() with the result page:
function redirectToGet() {
var done = false;
var cont = cocoon.createWebContinuation();
if (! done) {
done = true;
cocoon.redirectTo('/cont=' + cont.id, true);
cocoon.exit();
}
}
The problem is:
- if I leave out the cocoon.exit(), I get:
IllegalStateException: Pipeline has already been processed for this
request
- if I put the cocoon.exit() as shown, I get:
ProcessingException: Attempted to process incomplete pipeline
What gives?
I'm using Cocoon 2.1.10
Tobia
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