There's also send/back, which sends a single response. Jay
2011/6/27 Veer <diggerr...@gmail.com>: > This is really crazy , I wrote large program , and was getting > the same behavior and whole day I tried to figure why and why me? > Of course I forgot that response/xexpr does not > send the response back to client. > So view function becomes : > > (define (view request) > (send/suspend/dispatch > (lambda (make-url) > (response/xexpr > `(html))))) > > Thanks > > > > On Mon, Jun 27, 2011 at 7:47 PM, Jay McCarthy <jay.mccar...@gmail.com> wrote: >> This is not strange. >> >> When you click "Create Something", the continuation is [] >> >> When you click "Start Again", the continuation is >> >> (begin [] (error 'oops ...) (recur)) >> >> When you click "View", the value >> >> (response/xexpr >> `(html)) >> >> gets returned to the continuation, so you get an error, because begin >> ignores the value and drops through to the error. >> >> Jay >> >> 2011/6/27 Veer <diggerr...@gmail.com>: >>> Hello, >>> >>> When I run this web application (given below) , I get strange behavior >>> , don't know if >>> this is correct behavior or not. >>> >>> Follow/click the link in sequence : >>> 1. Create Something >>> 2. Start again >>> 3. View >>> >>> So , when I click "view" I get exception instead of blank page. >>> >>> code : >>> #lang web-server/insta >>> (define (start request) >>> (do-1 request)) >>> >>> (define (do-1 request) >>> (define (resp make-url) >>> (response/xexpr >>> `(html >>> (body (a ((href ,(make-url view))) "View") >>> (br) >>> (a ((href ,(make-url create-something))) "Create something"))))) >>> >>> (define (create-something request) >>> (recur)) >>> >>> (define (view request) >>> (response/xexpr >>> `(html))) >>> >>> (send/suspend/dispatch resp)) >>> >>> >>> (define (recur) >>> (do-something) >>> (error 'oops "WHY ARE WE HERE?") >>> (recur)) >>> >>> (define (do-something) >>> (define (resp make-url) >>> (response/xexpr >>> `(html >>> (body (a ((href ,(make-url start))) "Start again"))))) >>> (send/suspend/dispatch resp)) >>> >>> >>> Thanks >>> _________________________________________________ >>> For list-related administrative tasks: >>> http://lists.racket-lang.org/listinfo/users >>> >> >> >> >> -- >> Jay McCarthy <j...@cs.byu.edu> >> Assistant Professor / Brigham Young University >> http://faculty.cs.byu.edu/~jay >> >> "The glory of God is Intelligence" - D&C 93 >> > -- Jay McCarthy <j...@cs.byu.edu> Assistant Professor / Brigham Young University http://faculty.cs.byu.edu/~jay "The glory of God is Intelligence" - D&C 93 _________________________________________________ For list-related administrative tasks: http://lists.racket-lang.org/listinfo/users
