> what is your experience on showing errors to the user ? Create a special
> ErrorApp for this ?
You can use a buit-in support in WebApplication. There are
#error/#error: and #errorReport methods. A simple rule is that if you
set an error with some text, then an errorReport element will return
that text in red.
You can put that errorReport element somewhere on your page (usually
above an entry form) and set error in your action method after
verification of submitted data, then reload that same view. For example: