Hey, On Sun, Oct 10, 2010 at 1:12 AM, Jay McCarthy <jay.mccar...@gmail.com>wrote:
> On Sat, Oct 9, 2010 at 12:35 PM, Markku Rontu <markku.ro...@iki.fi> wrote: > > Hello, > > > > I've been experimenting with the web servlets lately and I'm not sure how > I > > should be handling forms. The documentation guides me to use formlets > > instead of bindings but the library seems rather incomplete. I mean based > on > > the source it seems to be missing radio buttons and files, for example. > Also > > The next release has support for almost all the form elements: > > > http://github.com/plt/racket/blob/master/collects/web-server/formlets/input.rkt > Good to know. > > the documentation seems to refer mostly to an older version with > > input-string etc. Using bindings is not a problem itself, it's what I'm > used > > to in Java-land but then again I have to build a complete framework on > top > > of it to handle everything properly. > > I suspect most people using bindings directly. > > > > > I managed to get simple formlets working as well as the direct bindings > but > > where am I supposed to do validation? Guess I do need to build the > framework > > myself? > > I'm not sure I understand the question. If your application has > special requirements on input, then you'll need to check it. Probably > on the request handler for the form action. > Well I was looking for a framework or an existing practice of doing it right. Typical web frameworks have some XML-based DSL or whatnot for validating expressions. I was wondering if there was any neat solutions for Racket yet. There is a lot of grunt work regarding showing validation errors, directing back or forward, validating common things such as dates etc. that I think should have some support. How? I'm not completely happy with the solutions I've seen so far... > If somebody has some useful pointers or best practices, I'd appreciate it. > > Or is there some framework I'm missing? What's in it for the formlets in > the > > future? Where is the active development now? > > I'm interested in hearing what is missing from the formlets library. > I'm also interested in a reusable validation layer, but I haven't come > up with a good design yet, so there's nothing in the distribution. > I can only think of in terms of existing Java-frameworks but I dislike them anyway. I'll try to think of something different next so I'll get back with some ideas a bit later. My approach is anyway to change quite much how typical UI code is written so have to think the fundamentals a bit more to have some good first idea. -Markku
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