perform action via AJAX

[benitojuarez]

Hello,

how can I perform an action component via AJAX request?

thx
BJ

[mkiel]

What exactly do you mean? Perhaps you're looking for this:

<a4j:commandLink action="#{myActionBean.doSomething()}">Do something</a4j:commandLink>

doSomething() is asynchronously called when the user clicks on the link. Check the RichFaces docs details.

[benitojuarez]

Hello,

is get an error using this code:

Warnung: Leerer String an getElementById() übergeben.
Fehler: this.form is null
Quelldatei: http://localhost:8080/TestServer/a4j314.GAorg.ajax4jsf.javascript.AjaxScript
Zeile: 95

must a4j:commandLink be inside of a form?

[amitev]

Yes the command components should be nested inside a form.

[benitojuarez]

thx, it works

but now i got another problem: the asynchronous called action can last 5 minutes and more. So i tried to create a progressbar according to the seam progressbar example.
It doesn't work correctly, the bar stays at 0 percent even if the process in background reaches 100 percent. If i call the same action (without @Asynchronous) via h:commandButton, it works well.

BJ