Thanks Christophe. Its working :)
One more doubt, When I don't want to add validation, I am returning null, in
this case page is not getting rendered.
Should I need to create a new validator "Optional", make this as default
validator;
Regards,
Jagadesh
On Thu, Mar 18, 2010 at 1:01 PM, Christophe Cordenier <
christophe.corden...@gmail.com> wrote:
> @Inject
> private FieldValidatorSource source;
>
> @InjectComponent
> private Field yourField;
>
> public FieldValidator getDynamicConstraints() {
> return source.createValidators(yourField, "required", null);
> }
>
> Note that this is how we generally use Tapestry Services by injecting them.
> Have a look at the API, it is pretty detailed on how to use methods on
> services. Also, keep in mind that there are two types of services : public
> (for tapestry users) and internal (for tapestry developers) So if you're
> looking at something, have a first look into the
> 'org.apache.tapestry5.services' package, you should find what you need ;)
>
> Regards,
> Christophe Cordenier.
>
> 2010/3/18 Jagadesh Paladugula <jagadeshpaladug...@gmail.com>
>
> > Hi Christophe,
> >
> > Could you please give me a sample implementation.
> >
> > Regards,
> > Jagadesh
> >
> > On Thu, Mar 18, 2010 at 12:39 PM, Christophe Cordenier <
> > christophe.corden...@gmail.com> wrote:
> >
> > > Hi
> > >
> > > Try with fielvalidtorsource service to build your conditional
> > constraints.
> > >
> > > Regards
> > > Christophe cordenier
> > >
> > > Le 18 mars 2010 à 06:59, Jagadesh Paladugula <
> > jagadeshpaladug...@gmail.com>
> > > a écrit :
> > >
> > >
> > > Hi Everyone,
> > >>
> > >> I have a form which is getting generated dynamically based on some
> > values
> > >> in
> > >> database. I want to add validation for a text box based on some
> > condition.
> > >>
> > >> I tried doing some thing like this
> > >>
> > >> <t:textfield t:validate="*${validator}*"></t:textfield>
> > >>
> > >> and added the below method in respective java file
> > >>
> > >> public String getValidator(){
> > >> if(test for validation condition){
> > >> return "required";
> > >> }else{
> > >> return "";
> > >> }
> > >> }
> > >>
> > >> I am getting some exception saying *"Could not find a coercion from
> type
> > >> java.lang.String to type org.apache.tapestry5.FieldValidator."*
> > >>
> > >> From the exception, I understood that it is expecting FieldValidator,
> > but
> > >> I
> > >> am not getting how to initalize a *"required" FieldValidator* and
> return
> > >> it.
> > >>
> > >> I have one more fix (which I didn't like)
> > >> <t:if test="test for validation">
> > >> <t:textfield t:validate="*${validator}*"></t:textfield>
> > >> <t:parameter name="else">
> > >> <t:textfield></t:textfield>
> > >> </t:parameter>
> > >> </t:if>
> > >>
> > >>
> > >> Please Let me know, if there is a way to initalize a FieldValidator.
> > >>
> > >> --
> > >> Thanks & Regards
> > >> Jagadesh
> > >>
> > >
> > > ---------------------------------------------------------------------
> > > To unsubscribe, e-mail: users-unsubscr...@tapestry.apache.org
> > > For additional commands, e-mail: users-h...@tapestry.apache.org
> > >
> > >
> >
> >
> > --
> > Regards
> > Jagadesh
> >
>
>
>
> --
> Regards,
> Christophe Cordenier.
>
> Developer of wooki @wookicentral.com
>
--
Regards
Jagadesh
