Re: [T5] Basic Ajax

[Nick Westgate]

You want to use an action link, not a page link.

See the example in this post:
http://article.gmane.org/gmane.comp.java.tapestry.user/49791/

You'll probably want to alter it to do something like:
    return TextStreamResponse("text/html", ...)

Cheers,
Nick.


Borut Bolčina wrote:

I am making some progress. I my AjaxBasic.tml file I have a <script> section
which has

var url = "ajaxbasic/" + encodeURIComponent(idField.value);

This idField gets from
<input type="text" id="userid" name="id" onkeyup="validate();"/>

In my AjaxBasic.java I have
public class AjaxBasic {

    private HttpServletRequest request;
    private HttpServletResponse response;

    @Inject
    private RequestGlobals _requestGlobals;

    private HashMap<String, String> users = new HashMap<String, String>();

    void pageLoaded() {
        System.out.println("AjaxBasic PageLoaded");
        users.put("greg", "account data");
        users.put("duke", "account data");
    }

    void onActivate(String id) throws IOException {
        request = _requestGlobals.getHTTPServletRequest();
        response = _requestGlobals.getHTTPServletResponse();
        System.out.println("AjaxBasic onActivate");
        System.out.println("id: " + id);
        if ((id != null) && users.containsKey(id.trim())) {
            response.setContentType("text/xml");
            response.setHeader("Cache-Control", "no-cache");
            response.getWriter().write("<message>valid</message>");
        } else {
            response.setContentType("text/xml");
            response.setHeader("Cache-Control", "no-cache");
            response.getWriter().write("<message>invalid</message>");
        }
    }
}

The problem is, that the response is not only the <message>valid</message>
or <message>invalid</message>

but the whole page's html is appended. How to prevent that?

Thanks,
Borut



2007/10/3, Thiago H. de Paula Figueiredo <[EMAIL PROTECTED]>:

Em Wed, 03 Oct 2007 15:59:57 -0300, Borut Bolčina
<[EMAIL PROTECTED]> escreveu:

Hello,
How should a url look like to be T5-ish in this javascript function:

What about . . .

function validate() {
   var idField = document.getElementById("userid");
   var url = "validate/111=" + encodeURIComponent(idField.value);

                         ^^^^

This way, we could use the activation context and make it very T5-ish. :)

Thiago

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