Extension containing forms

[vdaron]

I want to setup a registration extension on my dekiwiki web site.

Basically a simple form with a "Subscribe" button.

I've a Dream service to manage the database behind, but how can I link it into the dekiwiki interface ? What's the best way to do it with extensions ? I'm not a javascript expert...

I you have some advice, code snipplets, ...

Tks

[SteveB]

It's actually easier than you might expect and you don't need javascript to get a basic version going.

I'll assume all you want is a form with a textbox and a submit button. The solution will take 2 parts:
1) first you need to create a DekiScript function that returns the form so it can be embedded
2) second, you need to provide a handler when the submit button is pressed

Creating a function is easy if you already know how to create Dream services. Follow the same procedure by derive from DekiExtService. Then add a DekiScript function that returns the form:

[DekiExtFunction]
public XDoc SubscribeForm() {
  return new XDoc("html")
    .Start("body")
      .Start("form").Attr("method", "POST").Attr("action", Self.At("handler"))
        .Value("Email address: ")
        .Start("input").Attr("type", "text").Attr("name", "email").Attr("size", 60).End()
        .Start("input").Attr("type", "submit").Attr("value", "Submit").End()
      .End()
    .End();
}

Now you need the handler part, which is just a regular Dream feature in the same service:

[DreamFeature("POST:handler", "handle form submit")]
public Yield PostHandler(DreamContext context, DreamMessage request, Result<DreamMessage> response) {
    string email = request.AsDocument()["email"].AsText()
    response.Return(DreamMessage.Ok());
    yield break;
}

That should get you going. Would love it if you could share your near final version on an FAQ page.

[vdaron]

ok, tks

Will try to setup a faq when complete.

[jadus]

Did you get this working? I'm very interested in having a form's input sent to a table in a wiki page, and hope this might be the direction I need to go.

Edit: I can't read very well. The extension page for DHTML lists this exact example:

http://wiki.opengarden.org/Deki_Wiki/Extensions/DHtml

[jadus]

I may have spoken too soon. The example of dhtml.table works great, however any information that is entered disappears after a page refresh, or if a user navigates away from the page and comes back. Is this by design, and is there any way to force the form entries to remain in the table?

[SteveB]

DHtml is only for dynamic HTML. However, the code I provided above allows you to do server side processing using a .Net assembly.