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Posted to users@tapestry.apache.org by Onno Scheffers <on...@AtomicDigitalStudios.com> on 2005/09/04 18:02:17 UTC
ValidationDelegate writeSuffix
In Tapestry 3 I used to write my own ValidationDelegate, implementing
the writeSuffix method to render a '*' behind each required field in a
form or an error-message if that field was in error.
As was discussed before on this list, in Tapestry 4 the writeSuffix
method is now called for all sort of stuff, and it will have a
null-value for the validator parameters when called for TextField,
TextArea, etc. This breaks my previous solution, because I need access
to the validator to see if it is required.
I was wondering if there's an alternative way in Tapestry 4 to have each required field render either a '*' or an error-message behind it without having to subclass the existing components?
Regards,
Onno
>> - When I implement my own ValidationDelegate the writeSuffix method
>> always gets null as a validator parameter. Is that supposed to happen?
>> Or does that have to do with my previous question?
> The writeSuffix method is getting invoked for all sorts of stuff now,
> not just ValidFields. For TextField, TextArea, etc., the validator
> parameter will be null.
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Re: ValidationDelegate writeSuffix
Posted by Howard Lewis Ship <hl...@gmail.com>.
Kent,
Nice to see someone's been paying attention :-)
Howard
On 9/6/05, Kent Tong <ke...@cpttm.org.mo> wrote:
> Onno Scheffers <onno <at> AtomicDigitalStudios.com> writes:
>
> > Hey thanks Kent.... where did that come from? It wasn't in there in T4B3.
>
> Right, it's there since beta 4 if I remember correctly.
>
> > Just bought your e-book btw. Been planning to do so for a while and you
> > just gave me yet another reason to do so :oP
>
> Thanks!
>
> > BTW. I noticed that entering '0' in a required numeric TextField makes
> > the TextField empty. Probably because of the null -> 0 -> null
> > tranformation?
> > All other numeric values are maintained, except for '0'.
>
> Right. Try:
>
> <binding name="translator" value="translator:number,omitZero=false"/>
>
> --
> Author of an e-Book for learning Tapestry (http://www.agileskills2.org/EWDT)
>
>
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> To unsubscribe, e-mail: tapestry-user-unsubscribe@jakarta.apache.org
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>
--
Howard M. Lewis Ship
Independent J2EE / Open-Source Java Consultant
Creator, Jakarta Tapestry
Creator, Jakarta HiveMind
Professional Tapestry training, mentoring, support
and project work. http://howardlewisship.com
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Re: ValidationDelegate writeSuffix
Posted by Kent Tong <ke...@cpttm.org.mo>.
Onno Scheffers <onno <at> AtomicDigitalStudios.com> writes:
> Hey thanks Kent.... where did that come from? It wasn't in there in T4B3.
Right, it's there since beta 4 if I remember correctly.
> Just bought your e-book btw. Been planning to do so for a while and you
> just gave me yet another reason to do so :oP
Thanks!
> BTW. I noticed that entering '0' in a required numeric TextField makes
> the TextField empty. Probably because of the null -> 0 -> null
> tranformation?
> All other numeric values are maintained, except for '0'.
Right. Try:
<binding name="translator" value="translator:number,omitZero=false"/>
--
Author of an e-Book for learning Tapestry (http://www.agileskills2.org/EWDT)
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Re: ValidationDelegate writeSuffix
Posted by Onno Scheffers <on...@AtomicDigitalStudios.com>.
Kent Tong wrote:
>How about:
>
>public void writeSuffix(IMarkupWriter writer,
> IRequestCycle cycle, FormComponent component, IValidator validator) {
> if (component.isRequired()) {
> ...
> }
>}
>
>
Hey thanks Kent.... where did that come from? It wasn't in there in T4B3.
That should teach me to download the latest api-docs as well when I
switch to the latest beta-release.
Just bought your e-book btw. Been planning to do so for a while and you
just gave me yet another reason to do so :oP
BTW. I noticed that entering '0' in a required numeric TextField makes
the TextField empty. Probably because of the null -> 0 -> null
tranformation?
All other numeric values are maintained, except for '0'.
Regards,
Onno
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Re: ValidationDelegate writeSuffix
Posted by Kent Tong <ke...@cpttm.org.mo>.
Onno Scheffers <onno <at> AtomicDigitalStudios.com> writes:
>
> In Tapestry 3 I used to write my own ValidationDelegate, implementing
> the writeSuffix method to render a '*' behind each required field in a
> form or an error-message if that field was in error.
>
> As was discussed before on this list, in Tapestry 4 the writeSuffix
> method is now called for all sort of stuff, and it will have a
> null-value for the validator parameters when called for TextField,
> TextArea, etc. This breaks my previous solution, because I need access
> to the validator to see if it is required.
>
> I was wondering if there's an alternative way in Tapestry 4 to have each
required field render either a '*' or
> an error-message behind it without having to subclass the existing components?
How about:
public void writeSuffix(IMarkupWriter writer,
IRequestCycle cycle, FormComponent component, IValidator validator) {
if (component.isRequired()) {
...
}
}
--
Author of an e-Book for learning Tapestry (http://www.agileskills2.org/EWDT)
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