与AjaxFallBackButton一起使用时,Wicket FeedbackPanel具有空消息

时间:2017-01-04 12:23:20

标签: ajax wicket feedbackpanel

我正在使用BeanValidation for Form输入和AjaxFallbackButton来提交表单。和FeedbackPanel显示错误。当我提供无效输入时,表单不会提交但反馈面板没有显示。

onError,form.getFeedbackMessages()返回空数组。

Wicket版本6.18.0。

以下是代码:

    Form<Address> form = getForm();
    add(form);

    FeedbackPanel feedbackPanel = new FeedbackPanel("feedbackMessage");
    feedbackPanel.setOutputMarkupId(true);
    add(feedbackPanel);     


public Form<Address> getForm() {

    CompoundPropertyModel<Address> model = new CompoundPropertyModel<Address>(address);
    final Form<Address> form = new Form<Address>("addressForm", model);

    form.add(new Label("fNameLabel", new ResourceModel("fNameLabel")));
    form.add(new Label("lNameLabel", new ResourceModel("lNameLabel")));
    form.add(new Label("workLabel", new ResourceModel("workLabel")));
    form.add(new Label("homeLabel", new ResourceModel("homeLabel")));

    form.add(new TextField<String>("firstName").add(new PropertyValidator<String>()));
    form.add(new TextField<String>("lastName").add(new PropertyValidator<String>()));
    form.add(new TextField<String>("homeLocation").add(new PropertyValidator<String>()));
    form.add(new TextField<String>("workLocation").add(new PropertyValidator<String>()));
    form.add(new AjaxFallbackButton("submit", form) {

        /**
         * 
         */
        private static final long serialVersionUID = 6672729206839722437L;

        @Override
        protected void onError(final AjaxRequestTarget target, final Form form) {   
            Page page = target.getPage();
            for (Component component : page.visitChildren()) {
                String markupId = component.getMarkupId();
                if (markupId.contains("feedbackMessage")) {
                    if (form.hasFeedbackMessage()) {

                        System.out.println(form.getFeedbackMessages());
                    }
                }
            }

        }

        @Override
        protected void onSubmit(AjaxRequestTarget target, Form form) {

            if (address.getFirstName() != null) {
                AddressGenerator.getInstance().add(address);
                modalWindow.closeCurrent(target);
            }
        }
    });

    return form;
}

表格在ModalWindow中。

1 个答案:

答案 0 :(得分:0)

Component#getFeedbackMessages()会返回此组件实例的消息。它没有访问孩子们!

使用以下命令更新onError()方法

    @Override
    protected void onError(final AjaxRequestTarget target, final Form form) {   
        target.add(feedbackPanel);
    }

您可以使用if (form.hasError()),但由于您在AjaxFallbackButton#onError(),这意味着存在错误。