kranga wrote:
I'm interested in the answer to this too - can someone shed light on this?
----- Original Message -----
From: "Scott F. Walter" <[EMAIL PROTECTED]>
To: <[email protected]>
Sent: Friday, July 01, 2005 3:51 PM
Subject: Tapestry 4 Validation Question
So the format for the new validator syntax is :
validator:/name/[,/property/[=/value/]]*
My questions are:
1. If I create my own custom validator what do I specify for "name", is
it the full qualified class path or do I need to some how register "name"
with a full qualified class path?
2. Using the format above, how can I have multiple validators?
thanks, scott.
--
Scott F. Walter Scott F. Walter
Principal Consultant
Vivare, Inc.
E: [EMAIL PROTECTED]
E: [EMAIL PROTECTED]
Visit scottwalter.com <http://scottwalter.com> --Point. Click. Explore!
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I figured it out! To create and user a custom validator, follow these
steps:
1. Create a class that extends
org.apache.tapestry.form.validator.BaseValidator
2. If you want parameters to be passed into your validator, create a
constructor that takes a String
3. Override the validate method()
4. Provide a contribution to tapestry.form.validator.Validators in
hivemodule.xml (stored in your WEB-INF directory)
Below are my custom validator and my hivemodule.xml file
import org.apache.tapestry.form.IFormComponent;
import org.apache.tapestry.form.ValidationMessages;
import org.apache.tapestry.form.validator.BaseValidator;
import org.apache.tapestry.valid.ValidatorException;
/**
*
* @author scott
*/
public class MyNameValidator extends BaseValidator {
/** Creates a new instance of MyNameValidator */
public MyNameValidator() {
}
public void validate(IFormComponent field,
ValidationMessages messages,
java.lang.Object object)
throws ValidatorException {
if(object!=null && !object.toString().equalsIgnoreCase("scott")) {
throw new
ValidatorException(messages.formatValidationMessage(null,
"invalid-format", null));
}
}
}
<?xml version="1.0"?>
<module id="tapestry4sandbox" version="1.0.0"
package="com.scottwalter.sandbox.tapestry4">
<contribution configuration-id="tapestry.form.validator.Validators">
<validator name="myname" configurable="false"
class="com.scottwalter.sandbox.tapestry4.MyNameValidator"/>
</contribution>
</module>
Then inside my specification file, I have a component like the one
below: (Notice "myname" maps into the hivemodule,xml)
<component id="firstNameField" type="TextField">
<binding name="value" value="ognl:person.firstName"/>
<binding name="validators" value="required,minLength=3,myname"/>
<binding name="displayName" value="First Name"/>
</component>
The only problem I am having is to have localized error messages
returned. I have defined a global message space file, and I have a key
in the properties file, but when I try to reference in my custom
validator like this:
formatValidationMessage(null, "namenotscott", null) I get this
exception at runtime:
java.util.MissingResourceException Can't find resource for bundle
java.util.PropertyResourceBundle, key namenotscsott
For the "messageKey" parameter, I can only get values from
ValidationStrings.properties (which is located in the tapestry jar file).
So my question is when formatting validation messages how do I specify
the location of the resource bundle to use????
--
Scott F. Walter Scott F. Walter
Principal Consultant
Vivare, Inc.
E: [EMAIL PROTECTED]
E: [EMAIL PROTECTED]
Visit scottwalter.com <http://scottwalter.com> --Point. Click. Explore!
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