T5: (Noob:) How To Contribute A Custom Validator

[Steven Coco <co...@stevencoco.com>]

I'm REALLY swimming lost here, however I want to use a custom Validator for a 
form Select widget.

I have the server side down OK. I figured I would try to attach the validator 
in the template as well -- 
t:validator="NotEnumElementValidator=UNSELECTED" -- but I don't know how to 
contribute the validator so I can use it here.

I'm trying obvious things like in my ApplicationModule class:

public static Validator<...> build();

and

public static NotEnumElementValidator buildNotEnumElementValidator();

But no luck trying! I can't find the concrete example in the documentation. 
Can anyone tell me how I'm supposed to do this?

--About this validator too: it is supposed to take an Enum element that is an 
invalid selection from a list: I use the old rogue method of having the first 
item in the Select list say something like "[You must select...]" and then 
test if the user has chosen some other item. Is this still a modern method of 
validating a Select element?

This kind of validator seems like it would be a nice fit with the Bean edit 
form, which seems to support enums too.

Anyway, thanks in advance.

Ciao.
Steev Coco.

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Re: T5: (Noob:) How To Contribute A Custom Validator

[Siddhartha Argollo <sl...@tre-ba.gov.br>]

How I did it:

  public static void 
contributeFieldValidatorSource(MappedConfiguration<String, Validator> 
configuration)
  {
    configuration.add("myvalidator", new MyValidator());
  }


Steven Coco wrote:
> I'm REALLY swimming lost here, however I want to use a custom Validator for a 
> form Select widget.
>
> I have the server side down OK. I figured I would try to attach the validator 
> in the template as well -- 
> t:validator="NotEnumElementValidator=UNSELECTED" -- but I don't know how to 
> contribute the validator so I can use it here.
>
> I'm trying obvious things like in my ApplicationModule class:
>
> public static Validator<...> build();
>
> and
>
> public static NotEnumElementValidator buildNotEnumElementValidator();
>
> But no luck trying! I can't find the concrete example in the documentation. 
> Can anyone tell me how I'm supposed to do this?
>
> --About this validator too: it is supposed to take an Enum element that is an 
> invalid selection from a list: I use the old rogue method of having the first 
> item in the Select list say something like "[You must select...]" and then 
> test if the user has chosen some other item. Is this still a modern method of 
> validating a Select element?
>
> This kind of validator seems like it would be a nice fit with the Bean edit 
> form, which seems to support enums too.
>
> Anyway, thanks in advance.
>
> Ciao.
> Steev Coco.
>
> ---------------------------------------------------------------------
> To unsubscribe, e-mail: users-unsubscribe@tapestry.apache.org
> For additional commands, e-mail: users-help@tapestry.apache.org
>
>   

-- 
Siddhartha Argollo
Técnico Judiciário
TRE-BA
slargollo@tre-ba.gov.br


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