When nested form is submitted, the form components in surrounding
models are given the user input, but they are not processed. So the
input is "persisted" during request, but not validated and processed.
The inner (nested) form, that is submitted is both validated and if
validation succeeds, the models are updated.
-Matej
On 4/9/07, Carlos Pita <[EMAIL PROTECTED]> wrote:
> > there is a FormComponentPanel that can embed other form components, and act
>
> Great! Btw, is there something more like a border or fragment, to
> "inline" the markup?
>
> > as a formcomponent itself. and actually wicket does support embedded forms.
>
> Can you expand on this? Will nested forms be validated and bound
> before their containers?
>
> Cheers,
> Carlos
>
> >
> > -igor
> >
> >
> >
> > On 4/9/07, Carlos Pita <[EMAIL PROTECTED]> wrote:
> > >
> > > Hi all,
> > >
> > > suppose you have to implement some form input component that is
> > > composed from other simple FormComponents. These simple input fields
> > > will be ajax-validated individually, and they will be subject to some
> > > global (inter-field) validation too. An example could be three
> > > drop-downs for a date, with local validation requiring each field and
> > > global validation asking for a valid Gregorian calendar date. AFAIK
> > > there are nothing like nested forms in wicket, you have a form and
> > > then at the next level its FormComponents and that's all. So I tend to
> > > think of a static helper method that instantiates the individual form
> > > fields and registers them with the form. Maybe there must be some
> > > "synthetic" invisible component just to attach feedback from the date
> > > global-validation, which will be implemented as a form validator. For
> > > example:
> > >
> > > class MyForm extends Form {
> > >
> > > public MyForm(String id) {
> > > ....
> > > DateComponent.add(this, "birthDate");
> > > ....
> > > }
> > > }
> > >
> > > <select wicket:id="birthDate.day"/>
> > > <span wicket:id="birthDate.day.feedback"></span>
> > >
> > > <select wicket:id="birthDate.month"/>
> > > <span wicket:id="birthDate.month.feedback"></span>
> > >
> > > <select wicket:id="birthDate.year"/>
> > > <span wicket:id=" birthDate.year.feedback"></span>
> > >
> > > <span wicket:id="birthDate"></span> <!-- dummy component -->
> > > <span wicket:id="birthDate.feedback"></span>
> > >
> > >
> > > There are two things in this approach that I don't particularly like:
> > >
> > > 1) Having a dummy component to attach date global-validation errors
> > > (notice that they are not the same as form errors).
> > >
> > > 2) The procedural nature of the solution, there is no real Date component.
> > >
> > > What do you think? Do you have a better alternative that is not too
> > convolved?
> > >
> > > Best regards,
> > > Carlos
> > >
> > >
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