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POexception: current-continuation-marks: no corresponding prompt in the continuation: #<continuation-prompt-tag:web>
 

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  1. POexception: current-continuation-marks: no corresponding prompt in the continuation: #<continuation-prompt-tag:web>
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    <p>why do i get exception on (redirect/get) in this program</p> <pre><code>#lang web-server (require web-server/formlets web-server/page) (struct app (nm) #:mutable) (define (start req) (render-main-page req)) </code></pre> <p>this function is to be used by most pages and generates comlete page xexpr by calling each given piece of page generator functions, each of which may embed their urls </p> <pre><code>(define (render-page embed/url a-title blocks) (response/xexpr `(html (head (title ,a-title) (body ,@(map (lambda (block) (block embed/url)) blocks)))))) </code></pre> <p>this is piece of first page generator function</p> <pre><code>(define (render-action-panel embed/url action) `(a ([href ,(embed/url action)]) "New")) </code></pre> <p>this is first page</p> <pre><code>(define/page (render-main-page) (local [(define (new-handler req) (render-app-page req (app "new value"))) (define (panel-block embed/url) (render-action-panel embed/url new-handler))] (render-page embed/url "Title" (list panel-block)))) </code></pre> <p>this is piece of second page generator function (represents form)</p> <pre><code>(define (add-app-formlet an-app) (formlet (#%# ,{=&gt; input-string nm}) nm)) (define (render-app-form embed/url an-app save-handler) `(div (form ([action ,(embed/url save-handler)][method "POST"]) (span ,@(formlet-display (add-app-formlet an-app) )) (span (input ([type "submit"][value "Save"]))))));) </code></pre> <p>the second form, save handler throws exception when trying do post-redirect-get</p> <pre><code>(define/page (render-app-page an-app) (local [(define (save-handler req) (render-app-page (redirect/get) (set-app-nm! an-app (formlet-process (add-app-formlet an-app) req)))) (define (form-block embed/url) (render-app-form embed/url an-app save-handler )) ] (render-page embed/url "Title - form: " (list form-block)))) (require web-server/servlet-env) (serve/servlet start) </code></pre>
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    1. USskazska
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    1. This table or related slice is empty.
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    1. This table or related slice is empty.
    1. This table or related slice is empty.
 

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