Should be
void onHello() {
// ...
}
Tapestry has complained that you don't supply a event handler 'hello' which is
like onHello.
Thanks,
DH
----- Original Message -----
From: "Jason Tan" <[email protected]>
To: "Tapestry users" <[email protected]>
Sent: Friday, April 03, 2009 8:48 AM
Subject: Re: Component parameters & events
> Sorry, should've been more specific -- the URLs that you POST and GET to
> from within the javascript will usually have hardcoded URLs. Perhaps it is
> broken than I am using event methods on embedded components to act as the
> server-side AJAX handler, and maybe each ajax handler should be its own
> page.
>
> Thanks for the tip on printing parameter value vs. debugger, really good to
> know. I thought I was going crazy!!!
>
> Finally, I'm still baffed by the event method on page. If you have a simple
> page, Foo.java, with just this:
>
> void onActionFromHello()
> {
> log.debug("onActionFromHello");
> }
>
> Shouldn't you be able to execute that method by going to
> http://example.com/foo:hello ? Except what I get is "Request event 'hello'
> (on component foo) was not handled; you must provide a matching event
> handler method in the component or in one of its containers."
>
> I am really scratching my head because this jumpstart
> page<http://jumpstart.doublenegative.com.au:8080/jumpstart/examples/navigation/eventlinks>has
> a perfectly working example, and I feel like I've copied it perfectly.
>
>
> Thanks,
> Jason
>
>
> On Thu, Apr 2, 2009 at 5:21 PM, Thiago H. de Paula Figueiredo <
> [email protected]> wrote:
>
>> Em Thu, 02 Apr 2009 21:03:54 -0300, Jason Tan <[email protected]>
>> escreveu:
>>
>>
>> Unfortunately, in AJAX scenarios, the URL has to be hard-coded (though I
>>> suppose you could write use an EventLink to render the URL as a global
>>> variable inline in the TML, but that seems nasty).
>>>
>>
>> Not quite. You can use methods from ComponentResources and some Tapestry
>> services to generate links for you. No need to hardcode URLs.
>>
>> This example is adapted from EventLink:
>>
>> @Inject
>> private ComponentResources resources;
>>
>> @Override
>> protected Link createMethodLink(Object[] contextArray) {
>> return resources.createEventLink("yourEventName", contextArray);
>> }
>>
>>
>> My original question though, is whether event methods on *pages* are
>>> acceptable,
>>>
>>
>> Yes, and we use it all the time. And the difference between pages and
>> components in Tapestry 5 is very small: pages have URLs, components have
>> parameters, some different lifecycle events. Internally, a page is a
>> component.
>>
>> Also, I think my first and most baffling question wasn't answered, quoted
>>> again for reference. More specifcally, are component parameters expected
>>> to be bound by the time a an embedded component's setupRender() is called,
>>> or are they only bound when beginRender() is called? My debugging
>>> investigation indicated the latter, even though the documentation indicates
>>> the former.
>>>
>>
>> Try printing the parameter value instead of using the debugger. Tapestry
>> modifies your class on-the-fly and fields with Tapestry annotations are not
>> normal fields.
>>
>> --
>> Thiago H. de Paula Figueiredo
>> Independent Java consultant, developer, and instructor
>> http://www.arsmachina.com.br/thiago
>>
>>
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>
