Unless I'm missing something (which is possible), in both cases the
complexity comes because you are trying to NOT use the features of Tapestry.
Both of you want to bypass the tools Tapestry gives you.
Use an EventLink and use a context and a zone.
As for an arbitrary div... you can update any Zone you want.
Zones take some getting used to, but it feels like you're fighting the
framework. Using Zones and components like ProgressiveDisplay, I've created
stuff that also degrades nicely when there's no javascript available, which
is something else to consider.
Did I miss something?
Regards,
Jonathan
On Sat, Feb 26, 2011 at 12:01 PM, Adam Zimowski <zimowsk...@gmail.com>wrote:
> Heh.. this is funny, but it sounds like the issue I just described in
> my "Grid with multiple forms" thread. Anyway, to call a Tapestry event
> from a JavaScript you probably want this in your javascript:
>
> function yourJavaScriptMethod(yourParameterIfYouHaveOne) {
> var url = '${tapestryEvent}' + '/' + yourParameterIfYouHaveOne;
> var zm = Tapestry.findZoneManagerForZone("yourZone");
> zm.updateFromURL(url);
> }
>
> And this in your page class:
>
> Object onTapestryEvent(String parameterIfYouNeedIt) {
> return yourBlock;
> }
>
> public String getAddToCartUrl() {
> return resources.createEventLink("tapestryEvent").toURI();
> }
>
> Adam
>
> On Sat, Feb 26, 2011 at 10:52 AM, Tom van Dijk <t...@tvandijk.nl> wrote:
> > Hi,
> >
> > Well, it is an AJAX request. The X-Requested-With header is properly set,
> > isXHR() will return true. I'm executing it in Javascript, just a normal
> > call. It's supposed to return a form that I can then display in any DIV
> that
> > I want, and I don't want to use zones here. So I would think I should add
> a
> > method in my Page class, "getStuff" or something like that. And I
> basically
> > want to call that method, which returns a Block, from Javascript and get
> the
> > actual rendered HTML to put in any DIV of my choice.
> >
> > How?
> >
> > Tom.
> >
> > Op 26-2-2011 16:35, Josh Canfield schreef:
> >>
> >> Hi Tom.
> >>
> >> You can definitely return a block as the result of an AJAX request. If
> >> it's
> >> not an AJAX request then you will get an error about not having a result
> >> processor.
> >>
> >> Make sure that the zone parameter is set on the link you are using to
> >> initiate the zone update, and that javascript is turned on. You can
> check
> >> the request for isXHR to make sure tapestry thinks you are doing an ajax
> >> request.
> >>
> >> Josh
> >> On Feb 26, 2011 5:52 AM, "Tom van Dijk"<t...@tvandijk.nl> wrote:
> >>>
> >>> Hello,
> >>>
> >>> I want to do something that should be simple but appears to be complex.
> >>>
> >>> I want to render a Block and return the result. The context is a
> website
> >>> in which I want to use Javascript to fill a<div>. I don't want to use a
> >>> zone for this. What I did was make a<t:block> in the .tml file. Now
> what
> >>
> >> I
> >>>
> >>> want to do is send an event to the page, and return the rendered block
> >>> using JSON. A bit like this:
> >>>
> >>> @Inject
> >>> private Block theBlock;
> >>>
> >>> Object onTheEvent() {
> >>> return theBlock;
> >>> }
> >>>
> >>> I figured out that this doesn't work, because BlockImpl is not handled.
> >>> Okay, I have to return a StreamResponse. What I would like is:
> >>>
> >>> @Inject
> >>> private final BlockRenderer renderer;
> >>>
> >>> Object onTheEvent() {
> >>> return new TextStreamResponse("text/html", renderer.render(theBlock));
> >>> }
> >>>
> >>> Obviously the BlockRenderer service does not exist, but I would want it
> >>> to
> >>> exist. Or something similar.
> >>>
> >>> Who can help me out?
> >>>
> >>> Tom.
> >>>
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> >>>
> >
> >
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> >
>
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>
--
Jonathan Barker
ITStrategic
