On Sun, Jan 11, 2009 at 4:58 PM, Charles F. Munat <[email protected]> wrote:
>
> Yeah, I found this and have been playing with it, but am sort of stuck.
> What I'm doing looks something like this (but is much more complicated):
>
> def getForm: NodeSeq = {
> val widgets = [List(id,name) of unused widgets]
>
> if (widgets.isEmpty)
> <span>All widgets are in use.</span>
> else
> SHtml.ajaxForm(
> <input type="submit" value="+" class="addButton"/>
> {SHtml.select(
> widgets,
> Empty,
> (id: String) => {
> val w = Model.getReference[Widget](classOf[Widget], id.toLong)
> val t = Model.getReference[Thing](classOf[Thing], thing.id)
> t.widgets.add(w)
> Model.merge(t)
> Model.flush()
> SetHtml("widgetForm", getForm)
> }
> }, ("id", "optionSelector")
> )
> }
>
> def view(xhtml: NodeSeq): NodeSeq = {
> bind("widgets", xhtml, "addForm" -> getForm)
> }
>
> Then I want to insert it here:
>
> <lift:ThingOps.view>
> <div id="widgetForm"><widgets:addForm/></div>
> </lift:ThingOps.view>
>
> If I replace "getForm" in SetHtml above with <span>Rats!</span>, then it
> works perfectly and when I click the + button the entire form is
> replaced by "Rats!" But I need it to regenerate the form with either one
> fewer widgets in the select *or* the entire form replaced by an "All
> widgets are in use" message. But calling getForm from within getForm
> doesn't work... I get the current form, not the form *after* the widget
> has been added.
>
> I say the real one is more complicated because it also lists the widgets
> with "-" buttons next to them which permits them to be removed from the
> set. Each of these actions also requires the XHTML to be recalculated
> and redisplayed.
>
> Does this make any sense?
Yes. The problem as far as I can see is the place that state is maintained
(the list of what widgets are on the page) is missing. You've got the
t.widgets.add call, but the whole state management thing seems like a
mystery and I think that's where the problem is coming from.
>
>
> Chas.
>
> David Pollak wrote:
> > SetHtml(id: String, stuff: NodeSeq)
> >
> > It's a JsCmd and it replaces the contents of the Elem with the give id
> > on the page with stuff.
> >
> > Is this what you were looking for?
> >
> > On Sun, Jan 11, 2009 at 2:58 PM, Charles F. Munat <[email protected]
> > <mailto:[email protected]>> wrote:
> >
> >
> > Is there a JsCmd for replacing a NodeSeq? I want an AJAX button to
> run
> > some code on the server, generate a NodeSeq, and then replace the
> > similar NodeSeq on the page. I'm looking through the commands and I
> > don't see how to do that, except to use Run and then JQuery...
> >
> > Am I missing something? This seems like a common scenario, so I'm
> > thinking it's probably in there.
> >
> > Thanks,
> > Chas.
> >
> >
> >
> >
> >
> > --
> > Lift, the simply functional web framework http://liftweb.net
> > Collaborative Task Management http://much4.us
> > Follow me: http://twitter.com/dpp
> > Git some: http://github.com/dpp
> >
> > >
>
> >
>
--
Lift, the simply functional web framework http://liftweb.net
Collaborative Task Management http://much4.us
Follow me: http://twitter.com/dpp
Git some: http://github.com/dpp
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