Need an example of URL based dispatch in web-server

Hanson · February 16, 2022, 10:08am

Need an example of URL based dispatch in web-server. For exampel, I want to link www.forexample.com/admin to (define (admin request) ......)

soegaard · February 16, 2022, 10:12am

Here is an example:

github.com

soegaard/web-tutorial/blob/master/listit3/control.rkt#L135

      
        
            (define (dispatch req)
              (current-request req)
              (def login-status (get-login-status req))
              (def username     (and login-status (get-cookie-value req "username")))
              (def user         (and username (get-user #:username username)))
              
              (parameterize ([current-login-status (and user login-status)]
                             [current-user         (and login-status user)])
                (dispatch-on-url req)))
            
            
(defv (dispatch-on-url generate-url)
              ; pages:   show a given html page (generated by the view)
              ; actions: performs action, then redirects to a page
              (dispatch-rules
               ; pages
               [("")                                          do-home]                 
               [("home")                                      do-home]                 
               [("about")                                     do-about]                
               [("login")                                     do-login/create-account] 
               [("submit")                                    do-submit]               ; new entry page

Hanson · February 28, 2022, 7:44am

This can't work very well, though I change some your expressions base on previous definition like defv

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Need an example of URL based dispatch in web-server

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