Hi.

Loving Wicket so far! I had a search and had trouble finding the answer to
this one, if anyone can help:

1) I have a simple form with username/password and a submit button.

2) User enters username/password and hits submit.

3) onSubmit authenticates against the database through a load on a
LoadableDetachableModel, and returns the result as the model's object.

Let's say there is an error on authenticating against the database - what is
the easiest way of giving the user feedback that his username/password was
wrong? I naively thought I might be able to do some sort of conditional
insert of a component into the page or form (similar to Tapestry).

My solution was then to add a panel (regular not feedback) to the page which
consists of an error icon and a custom message. I would like to update this
component on the re-render so it doesn't display if there isn't a problem,
but it does if there is a problem (couldn't get isVisible working this way). 

What's the Wicket way?

Many thanks, Graeme.
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