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https://issues.apache.org/jira/browse/WICKET-1090?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12536555
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Eelco Hillenius commented on WICKET-1090:
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Well, I think it only makes sense because you know the internals. But imagine
you are not aware of these internals: you just update that model and expect it
to reflect the current value, right? It is actually what I expected when I
coded this case, and only when I saw it didn't work like I expected did I
realize this was because input gets cached (only) when there were validation
errors. I think it just feels very inconsistent, even if there is a workaround,
and the fact that it only fails when a form doesn't validate makes it a
hard-to-spot potential bug for people as well.
Maybe a FAQ is good yes.
> clean up raw_input after rendering of form components
> -----------------------------------------------------
>
> Key: WICKET-1090
> URL: https://issues.apache.org/jira/browse/WICKET-1090
> Project: Wicket
> Issue Type: Bug
> Affects Versions: 1.3.0-beta1, 1.3.0-beta2, 1.3.0-beta3, 1.3.0-beta4
> Reporter: Eelco Hillenius
> Assignee: Eelco Hillenius
> Fix For: 1.3.0-beta5
>
>
> This code doesn't work like it should:
> super("createUserForm", new CompoundPropertyModel(bean));
> final TextField passwordField = new TextField("password");
> passwordField.setOutputMarkupId(true);
> passwordField.setLabel(new ResourceModel("label.createuser.password"));
> add(passwordField);
> add(new AjaxLink("generatePasswordLink") {
> @Override
> public void onClick(AjaxRequestTarget target) {
> bean.setPassword(PasswordGenerator.generate().toString());
> target.addComponent(passwordField);
> }
> });
> It should update the label with the new password, but it doesn't when done
> after a form submit since it still has the raw_input value it got from that
> last form submit. There is no reason (as far as I know) to hold on to that
> value after rendering, so the fix is to clean the raw_input at the end of
> requests (i.e. onAfterRender).
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