2014-08-12 21:18 GMT+02:00 Wojciech Narczyński <wojtek@power.com.pl>:

W dniu 2014-08-12 01:22, Alberto G. Corona pisze:

But formlets are implemented in the server side.  and you probably think in applications with heavy use of JavaScript for validations, interaction  etc. In this case, there is a formlet implementation in the client side, which is my.. Ahem!... package hplaygroud:

https://github.com/agocorona/hplayground

Very interesting, please allow a few questions about your approach:

1. Would it be possible to save a snapshot of a paritally filled form on the server?

hplayground is client side. but by means of Haste.Ajax it is possible to send something to a server.

 do

         r  <- (+) <$> inputAndSend

                     <*> inputAndSend

         p  (show r) ++> noWidget

     where

     inputAndSend= do

         r <- inputInt Nothing `wake` OnKeyPress <++ br

         sendInt  r

         return r

     sendInt i=  send the int trough Haste.Ajax

2. Would it be possible to display the sum before the values: 3 = [ 1] + [  2] <-- this is rendered HTML, not Haskell?

yes, using "at":

 do

        wraw $ div  ! id "result" $ noHtml

         r  <- (+) <$> inputInt Nothing `wake` OnKeyPress <++ br

                     <*> inputInt Nothing `wake` OnKeyPress <++ br

         at "result" Html $ p  (show r) ++> noWidget 

 

(I thought I would have more questions, but somehow I can't think of any right now...)

--
Kind regards,
Wojtek

--
Alberto.