sunet/web-server/root/surflets/howto/user1.scm

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(define-structure surflet surflet-interface
(open surflets
scheme-with-scsh)
(begin
(define (main req)
(let* ((text-input (make-text-field))
(submit-button (make-submit-button))
(req (send-html/suspend
(lambda (k-url)
`(html
(body
(h1 "Echo")
(surflet-form ,k-url
(p "Please enter something:"
,text-input
,submit-button)))))))
(bindings (get-bindings req))
(user-input (input-field-value text-input bindings)))
(send-html/finish
`(html (body
(h1 "Echo result")
(p "You've entered: '" ,user-input "'."))))))
))