Have you tried adding an AjaxFormComponentUpdatingBehavior?
Something like this:
dropdown.add(new AjaxFormComponentUpdatingBehavior("onchange") {
private static final long serialVersionUID = 1L;
@Override
protected void onUpdate(final AjaxRequestTarget target) {
target.addComponent(textfield);
}
});
Linda
Andrea Aime wrote:
Hi,
I'm having quite a headache figuring out a clean way
to make a form that behaves like a desktop app.
Basically I have a dropdown that allows to choose some
template, and ajax link that should populate the
contents of a text area based on what you chose in
the dropdown (content that can be retrieved only
at the server side).
Making it work when there are other components
that need validation in the same form is sort
of a nighmare (or more likely, lack of understanding
of how things work):
- if the link is a plain link, the onClick is
always triggered, but the form components are not
updated (so I don't get to know what's inside
the drop down)
- if I use a AjaxSubmitLink it does work, but only
if the form as a whole is valid. Not what I want
- if I disable the normal form processing in the
ajax submit link the onSubmit is triggered even
if the form is not valid, but then I have to
validated by hand the components in order
to be able and grab what the user selected
(using getConvertedInput)
I've attached a sample application that does
what I want, but it's not exactly elegant...
on the contrary, it seems quite convoluted
and I got there mostly by trial and error...
is there a better way?
Cheers
Andrea
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