Basically, you just use the "validators" binding to specify ids for any
validators you want to apply to the field:
<binding name="validators" value="validators:required,minLength=4"/>
the "validators:" prefix will look up the validator ids in the
"tapestry.form.validator.Validators" configuration point.
Some predefined validators are already available, read here:
http://jakarta.apache.org/tapestry/UsersGuide/validation.html#validation.fields
Or you can make your own custom validator by implementing this interface:
http://jakarta.apache.org/tapestry/tapestry/apidocs/org/apache/tapestry/form/validator/Validator.html
and adding it to that configuration point.
Download the tapestry source and look at these files, should give you an
idea on how to make a custom validator:
\framework\src\descriptor\META-INF\tapestry.form.validator.xml
\framework\src\java\org\apache\tapestry\form\validator\Email.java
On Thu, 26 Jan 2006 19:38:19 +0100, Adrian Davis <[EMAIL PROTECTED]>
wrote:
I'm trying to setup some validators in a small test application I'm
writing.
I have to say that as a newcomer the tapestry documentation leaves a lot
to
be desired. There seems to be a lot of conflicting information as parts
are
updated for 4.0 and other parts aren't. But on to my specific
question...
This is an excerpt from the TextField component reference:
A TextField may be decorated by the Form's validation delegate, but does
not
have a validator, so is limited in editting properties types beyond
string.
In most cases, the ValidField component is preferred.
And this is an excerpt from the ValidField component:
Warning
This component has been deprecated; Tapestry 4.0 adds even better support
for validation to TextField, TextArea and most other form element
component.
And there's even a link to the TextField reference page in the warning.
Is
there some documentation somewhere that describes how to do TextField
validation using the 4.0 "better support for validation". Or am I
looking
at the wrong reference?
Any help would be appreciated.
Thanks,
Adrian
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