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Posted to users@myfaces.apache.org by Maxence Dewil <m....@t4hr.com> on 2005/10/19 10:22:56 UTC
Validation of inter-dependent fields
Hello,
My application has to validate a form where a date depends on another
date (the first one must be < the next one), but the JSF validation is
component-oriented. How can I handle that in an elegant way?
A solution is described here but I don't understand how to achieve it :
http://weblogs.java.net/blog/johnreynolds/archive/2004/07/improve_jsf_by
_1.html (#Validation of Inter-Dependent Fields).
Regards,
Maxence Dewil
Re: Validation of inter-dependent fields
Posted by Mike Kienenberger <mk...@gmail.com>.
Mathias,
This request has come up on the mailing list quite often.
Any chance of a validateLessThan and validateGreaterThan addition to
tomahawk to complement validateEquals? Maybe using a Comparable
interface if it's defined?
-Mike
On 10/19/05, Mathias Brökelmann <mb...@googlemail.com> wrote:
> define a custom validator for the second date field (must be the second).
>
> <h:inputDate id="lowerDate" value="#{yourBackinBean.lowerDate}"/>
> <h:inputDate value="#{yourBackinBean.upperDate}"
> validator="#{yourBackingBean.validateDates}"/>
>
> public class YourBackingBean
> {
> public void validateDates(FacesContext context, UIComponent
> component, Object value) throws ValidatorException
> {
> UIInput lowerComponent = (UIInput)component.findComponent("lowerDate");
> if(lowerComponent.isValid())
> {
> Date lowerDate = lowerComponent.getValue();
> Date upperDate = (Date)value;
> // compare the two dates and throw a ValidatorException with
> message if they are not valid
> }
> }
> }
>
>
> 2005/10/19, Maxence Dewil <m....@t4hr.com>:
> >
> >
> >
> > Hello,
> >
> >
> >
> > My application has to validate a form where a date depends on another date
> > (the first one must be < the next one), but the JSF validation is
> > component-oriented. How can I handle that in an elegant way?
> >
> >
> >
> > A solution is described here but I don't understand how to achieve it :
> > http://weblogs.java.net/blog/johnreynolds/archive/2004/07/improve_jsf_by_1.html
> > (#Validation of Inter-Dependent Fields).
> >
> >
> >
> > Regards,
> >
> >
> >
> > Maxence Dewil
>
>
> --
> Mathias
>
Re: Validation of inter-dependent fields
Posted by Mathias Brökelmann <mb...@googlemail.com>.
define a custom validator for the second date field (must be the second).
<h:inputDate id="lowerDate" value="#{yourBackinBean.lowerDate}"/>
<h:inputDate value="#{yourBackinBean.upperDate}"
validator="#{yourBackingBean.validateDates}"/>
public class YourBackingBean
{
public void validateDates(FacesContext context, UIComponent
component, Object value) throws ValidatorException
{
UIInput lowerComponent = (UIInput)component.findComponent("lowerDate");
if(lowerComponent.isValid())
{
Date lowerDate = lowerComponent.getValue();
Date upperDate = (Date)value;
// compare the two dates and throw a ValidatorException with
message if they are not valid
}
}
}
2005/10/19, Maxence Dewil <m....@t4hr.com>:
>
>
>
> Hello,
>
>
>
> My application has to validate a form where a date depends on another date
> (the first one must be < the next one), but the JSF validation is
> component-oriented. How can I handle that in an elegant way?
>
>
>
> A solution is described here but I don't understand how to achieve it :
> http://weblogs.java.net/blog/johnreynolds/archive/2004/07/improve_jsf_by_1.html
> (#Validation of Inter-Dependent Fields).
>
>
>
> Regards,
>
>
>
> Maxence Dewil
--
Mathias