I am using MyFaces 1.0.8 at home. I have a page I've
been building that has a custom converter on a field.
The field doesn't have the required attribute set, and
the converter does get called when the field is empty.
Here is the snippet from my code. When I click on the
command button the following method does get fired and
the "ID is required" message does get displayed on the
page.
I don't know if something changed in 1.0.9, but this
works in 1.0.8.
<h:inputText value="#{reoccursTypeBean.id}" size="2"
maxlength="2">
<f:converter converterId="converter.Required"/>
</h:inputText>
public Object getAsObject(FacesContext context,
UIComponent component,
String newValue)
throws ConverterException {
if (StringUtils.isNullOrEmpty(newValue)) {
FacesMessage message = new FacesMessage("Id is
required");
message.setSeverity(FacesMessage.SEVERITY_ERROR);
throw new ConverterException(message);
} else if (!ApplicationUtils.isInteger(newValue)) {
FacesMessage message = new FacesMessage("Id must
be numeric");
message.setSeverity(FacesMessage.SEVERITY_ERROR);
throw new ConverterException(message);
} else {
return newValue;
}
}
--- Heath Borders <[EMAIL PROTECTED]> wrote:
> No, if the field is empty, it will not call your
> validator. Your only option
> is the required attribute.
>
> On Apr 8, 2005 10:18 PM, Ray Clark
> <[EMAIL PROTECTED]> wrote:
> >
> > If you want to see if your field is empty and you
> > don't want to use the required attribute, could
> you
> > make your own converter? I'm thinking that you
> could
> > catch in their that the field was empty and throw
> a
> > message there. I don't know, but maybe that would
> > work for you.
> >
> > --- Heath Borders <[EMAIL PROTECTED]> wrote:
> > > No, the submittedValue is null, no validators
> will
> > > ever be fired.
> > >
> > > On Apr 8, 2005 10:13 AM, Borja Mart�n
> > > <[EMAIL PROTECTED]> wrote:
> > > >
> > > > Heath Borders wrote:
> > > >
> > > > > This is a known issue with the JSF spec. The
> > > spec says that for any
> > > > > UIInput if the submittedValue is null,
> > > validation should not be
> > > > > called. There's nothing that we can do about
> it
> > > if we want to remain
> > > > > standards compliant.
> > > > >
> > > > then suppose I have a value that I should
> handle
> > > throughtout the whole
> > > > application but cannot use sessions for this
> (for
> > > example a selected id
> > > > of a newsitem in a editor)
> > > > then if use the 'required' attribute I cannot
> > > retrieve it as the model
> > > > updating phase comes after the validating one.
> > > > But if I use my own validator I can get this
> > > variable and validate the
> > > > field value as I want(including if was empty
> or
> > > not)
> > > >
> > > > >
> > > > > On Apr 8, 2005 9:59 AM, *Borja Mart�n*
> > > <[EMAIL PROTECTED]
> > > > > <mailto:[EMAIL PROTECTED]>> wrote:
> > > > >
> > > > > hi,
> > > > > I have seen that my own validator method
> isnt
> > > called when the field
> > > > > value is empty(I'm making this to be able to
> get
> > > some sent form values
> > > > > during the validation). I have this:
> > > > >
> > > > > ...
> > > > > <h:inputText id="title"
> value="#{news.title}"
> > > > > validator="#{news.validateTitle}" />
> > > > > <h:message for="title" />
> > > > > ...
> > > > >
> > > > > and in the NewsForm class:
> > > > > ...
> > > > > public void validateTitle(FacesContext
> context,
> > > UIComponent comp,
> > > > > Object
> > > > > obj)
> > > > > {
> > > > > throw new ValidatorException(
> > > > > new FacesMessage("just testing the method is
> > > called"));
> > > > > }
> > > > >
> > > > > as you can see the method should send the a
> > > validatorexception
> > > > > whenever
> > > > > the form is sent(just for testing purposes).
> > > well, if the field is
> > > > > totally blank it isnt called, but when it
> > > contains at least one
> > > > > character it is.
> > > > >
> > > > > Maybe that has something to do with what we
> > > talked before about that
> > > > > previously blank fields where handled as
> empty
> > > strings and now as null
> > > > > values...
> > > > >
> > > > > thanks in advance
> > > > >
> > > > >
> > > > >
> > > > >
> > > > > --
> > > > > -Heath Borders-Wing
> > > > > [EMAIL PROTECTED]
> > > <mailto:[EMAIL PROTECTED]>
> > > >
> > > >
> > >
> > >
> > > --
> > > -Heath Borders-Wing
> > > [EMAIL PROTECTED]
> > >
> >
> > __________________________________
> > Do you Yahoo!?
> > Read only the mail you want - Yahoo! Mail
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> >
>
>
>
> --
> -Heath Borders-Wing
> [EMAIL PROTECTED]
>
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