understanding the support-tag

[mmehrwald]

hello,

can anyone help me understanding the a4j:support tag?
i wrote my own component which includes some select one menus. now i want to use the support tag to update the component if one of the select one menus changes its value but i got stucked with that. this is because i do not know how the component adds the support to underlaying components like my menus.

thanks in advance,
markus

[sergeysmirnov]

See:
http://livedemo.exadel.com/richfaces-demo/richfaces/support.jsf?c=support
http://livedemo.exadel.com/richfaces-demo/richfaces/ajaxAttributes.jsf?c=ajaxattributes
and read "RichFaces. Developers Guide"

[mmehrwald]

Thank you Sergey for you answer.
I am afraid that was not what I want to know.
I wrote my own component I now I need to use the support tag to catch all onchange events from my 8 select one menus but I do not know how those attributes get the ajax request call written.
So how can I attach the tag written in JSF to my components created in my own tag?

Markus

[sergeysmirnov]

a4j:support attaches to the event defined with attribute. So, if you have the onchange attribute, you can say a4j:support event="onchange" and that is all you need.

For example, if this code works:

<mylib:mytag onchange="alert('I am working')" />

this will work as well:

<mylib:mytag>
 <a4j:support event="onchange" ...... />
</mylib:mytag>

[mmehrwald]

thank you very much. that was what I wanted to know and my component is working now.

[sergeysmirnov]

Good to know that your component is working now :-)