hi, basically the current implementation of @RequiredIf is designed to be used in combination with two text-input fields. anyway, it's quite easy to solve the requirement with the cross-validation mechanism of myfaces extval. you can also implement a @ValidateMyCustomConstraintIf based on the infrastructure of extval. i'll create a wiki which describes the required steps.
additional information: if the information is already available in a bean, you can use @SkipValidation as well. (however, that's not the case in your use-case.) regards, gerhard http://www.irian.at Your JSF powerhouse - JSF Consulting, Development and Courses in English and German Professional Support for Apache MyFaces 2009/11/17 Mike Kienenberger <[email protected]> > The optional validation framework is ancient at this point. It was a > short-lived, flawed project. I don't recommend using it as is, but > maybe you can use pieces of the source code as examples to accomplish > some of what you need. > > Your best bet is to either reuse validateCompareTo > (CompareToValidator) from Tomahawk or write your own validator using > that Tomahawk component as a model. You could submit it back as a > requiredIf validator to MyFaces. This is the approach I would take. > > Here's a generic thread on conditional required fields -- one of the > few I could find on the subject -- and it also talks about using the > compare-to strategy above. > > > http://forums.sun.com/thread.jspa?trange=15&threadID=500322&forumID=427&tstart=0 > > I see there's also a @RequiredIf annotation mentioned in the ExtVal > docs. I don't know if it's also available as a standard non-annotated > validator, though. > > One other remote possibility is to see if a subForm can be configured > to be able to do what you need. > > On Tue, Nov 17, 2009 at 1:51 PM, laredotornado <[email protected]> > wrote: > > > > So you are the author of the optional validation framework? That is > > excellent. I was reading the page but am still missing the gist of the > > example. How would you say, "If element A contains this value, then > apply > > this validatino rule to element B?" > > > > Thanks, - Dave > > > > > > Mike Kienenberger wrote: > >> > >> required will have to be non-true. I don't know if there's an el > >> expression that will work in your case, so you might just have to > >> leave it false. > >> > >> The following validator works against multiple components. > >> > >> http://myfaces.apache.org/sandbox/validateCompareTo.html > >> > >> You can either use it as a template for creating your own validator, > >> or you might be able to use the comparator attribute on it to > >> accomplish what you need. (Force it to compare against a constant > >> value of true or false instead of the inputText value). Still not > >> sure how that'd interact with <f:validateLongRange> > >> > >> You might also be able to use pieces of the OptionalValidationFramework. > >> > >> http://wiki.apache.org/myfaces/OptionalValidationFramework > >> > >> > >> On Tue, Nov 17, 2009 at 12:57 PM, laredotornado < > [email protected]> > >> wrote: > >>> > >>> Hi, > >>> > >>> I'm using MyFaces 1.2.4, Tomahawk 1.1.9. How do I tell JSF that I only > >>> want > >>> to apply a validator to a text field if a checkbox on the page is > >>> checked? > >>> Right now I have this text field ... > >>> > >>> <h:inputText id="domeTourNumAdults" value="#{domeTour.numAdults}" > >>> required="true" > >>> size="60" > >>> maxlength="60" > >>> styleClass="textFields > >>> numAdultsField"> > >>> <f:validateLongRange minimum="0"/> > >>> </h:inputText> > >>> > >>> but if a certain checkbox is not checked, I don't care if this field is > >>> left > >>> blank. Your thoughts are appreciated, - Dave > >>> -- > >>> View this message in context: > >>> > http://old.nabble.com/Only-want-to-validate-a-text-field-if-checkbox-is-checked-...-how--tp26394554p26394554.html > >>> Sent from the MyFaces - Users mailing list archive at Nabble.com. > >>> > >>> > >> > >> > > > > -- > > View this message in context: > http://old.nabble.com/Only-want-to-validate-a-text-field-if-checkbox-is-checked-...-how--tp26394554p26395396.html > > Sent from the MyFaces - Users mailing list archive at Nabble.com. > > > > >
