The following servlet show an input field from a formlet and then tries to use
formlet-process on the resulting request. I don't understand why this fails
when, like below, the send/suspend and formlet-process is in a function but
works when inlined, like the #; commented code in handle-html-form.
The error is
stuff-url: Cannot stuff (kont #<procedure:...abort-resume.rkt:154:25>) into a
URL because it contains non-serializable pieces. Convert
#<procedure:...formlets/lib.rkt:17:2> to a serializable struct
Why does the extra lambda lead to this error message?
#lang web-server
(provide handle-html-form
interface-version)
(define interface-version 'stateless)
(require web-server/formlets web-server/servlet-env)
(define main-input-formlet
(formlet
(#%# ,[(to-string (required (text-input))) . => . text])
text))
(define (send/form2 f)
(formlet-process f
(send/suspend
(lambda (k-url)
(response/xexpr
`(form ([action ,k-url] [method "POST"])
,@(formlet-display f)))))))
(define (handle-html-form req)
(define user-input
(send/form2 main-input-formlet)
#;(formlet-process
main-input-formlet
(send/suspend
(lambda (k-url)
(response/xexpr
`(form ([action ,k-url] [method "POST"])
,@(formlet-display main-input-formlet)))))))
(displayln user-input))
(serve/servlet handle-html-form #:stateless? #t)
____________________
Racket Users list:
http://lists.racket-lang.org/users
