Thank you very much for your responses!!!
Lance: very very interesting the onEvent mixin from tapestry-stitch!
Thiago: I just learned something new. Thank you very much for your time!
Finally what happened was that I needed to add the following to my
AppModule.java and Tapestry not intercepting my url:
public static void contributeIgnoredPathsFilter(Configuration<String>
configuration)
{
configuration.add("/combo/*");
}
2013/12/10 Thiago H de Paula Figueiredo <thiag...@gmail.com>
> On Tue, 10 Dec 2013 19:05:26 -0200, Javier Val Lista <javilan...@gmail.com>
> wrote:
>
> This is what I was trying at first, catching the onchange event of the
>> select component by javascritp, and launch an ajax request to the server.
>> The
>> problem is Tapestry does not recognize the "GET" url...
>>
>
> Tapestry does recognize GET URLs, but not any.
>
>
> Do you know if Tapestry handles url with a different format?
>>
>
> No. It uses HTTP.
>
> Here's an example, not tested:
>
> @Inject
> private ComponentResources resources;
>
> @Inject
> private RenderSupport renderSupport; // JavaScriptSupport from 5.2 on
>
> @Inject
> private Request request;
>
> void afterRender() {
> // creates an URL for the 'myValueChanged' event
> Link link = resources.createEventLink("myValueChanged");
> // write a call to a JavaScript function
> renderSupport.addScript("setMyValueChangedUrl('%s');"),
> link.toAbsoluteURI());
> }
>
> // handle the AJAX request.
> Object onMyValueChanged() {
> String value = request.getParameter("value");
> // do whatever you want with value
> String newValue = ...;
> JSONObject object = new JSONObject();
> object.put("newValue", newValue);
> return object;
> }
>
> In a .js file included in the page and using Prototype.js, but it can be
> easily switched to jQuery if you're already using it:
>
> var myValueChangedUrl = null;
>
> function setMyValueChangedUrl(url) {
> myValueChangedUrl = url;
> }
>
> $('yourSelectId').observe('change', function(event) {
>
> // adding the value as a query parameter
> var url = myValueChangedUrl + '?value=' +
> encodeUri($('yourSelectId').getValue());
>
> // do AJAX request
> new Ajax.Request(url, {
>
> // process response
> onSuccess: function(transport) {
>
> // transport.responseJSON is the JSONObject
> returned in your event handler method
> value response = transport.headerJSON;
>
> // do something with the response
> window.alert(response.newValue);
> }
> });
> });
>
>
> --
> Thiago H. de Paula Figueiredo
> Tapestry, Java and Hibernate consultant and developer
> http://machina.com.br
>
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