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https://issues.apache.org/jira/browse/WICKET-838?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Carlos Pita updated WICKET-838:
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Attachment: ChoiceBehaviorPage.java
> AjaxFormChoiceComponentUpdatingBehavior not working
> ---------------------------------------------------
>
> Key: WICKET-838
> URL: https://issues.apache.org/jira/browse/WICKET-838
> Project: Wicket
> Issue Type: Bug
> Components: wicket
> Affects Versions: 1.3.0-beta2
> Reporter: Carlos Pita
> Fix For: 1.3.0-beta3
>
> Attachments: ChoiceBehaviorPage.html, ChoiceBehaviorPage.java
>
>
> I think this is because of its own component field that is hiding that of
> AbstractAjaxBehavior. Try to run the attached example and you will get:
> WicketMessage: Exception in rendering component: [MarkupContainer [Component
> id = _header_, page = com.livra.web.user.RegistrationPage, path =
> 12:_header_.HtmlHeaderContainer, isVisible = true, isVersioned = true]]
> Root cause:
> java.lang.NullPointerException
> at
> org.apache.wicket.ajax.form.AjaxFormChoiceComponentUpdatingBehavior.renderHead(AjaxFormChoiceComponentUpdatingBehavior.java:71)
> at org.apache.wicket.Component.renderHead(Component.java:2266)
> at
> org.apache.wicket.markup.html.internal.HtmlHeaderContainer$1.component(HtmlHeaderContainer.java:209)
> at org.apache.wicket.MarkupContainer.visitChildren(MarkupContainer.java:843)
> at org.apache.wicket.MarkupContainer.visitChildren(MarkupContainer.java:858)
> at org.apache.wicket.MarkupContainer.visitChildren(MarkupContainer.java:883)
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