Component with id [[feedback]] a was not found while trying to perform markup update. Make sure you called component.setOutputMarkupId(true) on the component whose markup you are trying to update.

[novotny]

Hi,

I have a modal dialog (a stateless form) with a feedback panel. The code
looks like:

public final class SignInForm extends StatelessForm {

private FeedbackPanel feedback;

public SignInForm(final String id) {
            // sets a compound model on this form, every component without
an
            // explicit model will use this model too
            super(id, new CompoundPropertyModel(new ValueMap()));

            feedback = new FeedbackPanel("feedback");
            feedback.setOutputMarkupId(true);
            feedback.setMarkupId("feedback");
            add(feedback);

            add(new AjaxButton("submit", this) {

                protected void onSubmit(AjaxRequestTarget target, Form<?>
form) {
                        .....
                        error(getLocalizer().getString("exception.login",
this,
                                "Illegal username password combo"));
                        feedback.setOutputMarkupId(true);
                        feedback.setMarkupId("feedback");
                        target.addComponent(feedback);
                }

                @Override
                protected void onError(AjaxRequestTarget target, Form<?>
form)
                {
                    // repaint the feedback panel so errors are shown
                    super.onError(target, form);
                    feedback.setOutputMarkupId(true);
                    feedback.setMarkupId("feedback");
                    target.addComponent(feedback);
                }
            });

and my HTML looks like:

<form id="signInForm" method="post" wicket:id="signInForm">
        <div id="feedback" wicket:id="feedback" class="error"></div>
        <fieldset>
            <legend>Sign In to Your Account</legend>
            <ol>
                <li>
                    <label>Username</label>
                    <input type="text" id="username" wicket:id="username"/>
                </li>
                <li>
                    <label>Password</label>
                    <input type="password" id="password"
wicket:id="password"/>
                </li>
            </ol>
            <button wicket:id="submit">Sign In</button>
        </fieldset>
    </form>

but it never renders the feedback panel. I get:
 Component with id [[feedback]] a was not found while trying to perform
markup update. Make sure you called component.setOutputMarkupId(true) on the
component whose markup you are trying to update.
in my "Wicket Ajax Debug" window...  what can I be missing?

Thanks, Jason
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