TexField.setConvertEmptyInputStringToNull( true ) worked fine for me
in a quickstart...
-igor
On Fri, Mar 28, 2008 at 8:25 AM, Eric Rotick <[EMAIL PROTECTED]> wrote:
> I've just been reading the section on Forms and validation in Wicket in
> Action and have tried
>
> AbstractValidator av = new AbstractValidator( ) {
> protected void onValidate( IValidatable validatable ) {
> // No nothing
> }
> public boolean validateOnNullValue( ) {
> return true;
> }
> };
>
> adding one of these to the TextField but still an empty string gets
> returned.
>
> All I want to do is get a null string rather than an empty string from a
> TextField. Has nobody had this use case?
>
>
>
>
> On Thu, Mar 27, 2008 at 5:02 PM, Eric Rotick <[EMAIL PROTECTED]> wrote:
>
> > I've just realised that the database is getting filled with columns of
> > empty strings which then don't cause the 'not null' test to trip.
> >
> > The culprit is the TextField returning an empty string rather than a null.
> > I can see there are some special considerations for returning a null and I
> > want to understand how they will effect me. However, I've tried
> >
> > TexField.setConvertEmptyInputStringToNull( true )
> >
> > with no effect and using
> >
> > new TextField( id ) {
> > public boolean isInputNullable() {
> > regturn true;
> > }
> > };
> >
> > also with no effect.
> >
> > I'm assuming I'm not the first person to see this effect and I guess it's
> > lack of understanding rather than some implicit behaviour but I can't find
> > anything guiding on the subject.
> >
> > In this case, the string has no special formatting, it just needs to be
> > stored verbatim in the database but the application logic in the backend
> > uses an empty string in a different way than a null string and, yes, maybe
> > the database should also have a column check but it doesn't at present.
> >
> > Any pointers?
> >
> >
>
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