RE: [flexcoders] Validatior's binding problem?

Peter Watson Wed, 22 Feb 2006 04:56:24 -0800

Hi Kazuya,

As Matt said – in Flex 1.5, validators don’t support binding.

Below is a workaround for your issue.

I got most of the code from here:

http://blog.daemon.com.au/archives/000317.html

Main.mxml

*************

<?xml version="1.0" encoding="utf-8"?>

<mx:Application xmlns:mx="http://www.macromedia.com/2003/mxml" xmlns:local="*">

<mx:Script>

<![CDATA[

function testField( validator, value ){

validator.numLength = name1.maxChars;

//debug

//mx.core.Application.alert(validator.numLength);

validator.doValidation(value);

}

]]>

</mx:Script>

<mx:Model id="test">

</mx:Model>

<local:RequiredFieldValidator xmlns="*" field="test.secondField" validate="testField(event.validator, event.value)"/>

<mx:Form>

<mx:FormItem>

<mx:TextInput id="name1" maxChars="5"/>

</mx:FormItem>

<mx:FormItem>

<mx:TextInput id="name2"/>

</mx:FormItem>

</mx:Form>

</mx:Application>

RequiredFieldValidator.as

********************************

class RequiredFieldValidator extends mx.validators.Validator {

public var numLength:Number;

public function RequiredFieldValidator(){

}

public function doValidation(fieldString) : Void{

RequiredFieldValidator.validateValue(this, fieldString, null, numLength);

}

public static function validateValue(validator:mx.validators.Validator, fieldString:String, subField, numLength) : Boolean{

var tempValue = new String(fieldString);

if(tempValue.length > numLength){

validator.validationError("TooLong", "You entered " + tempValue.length + " characters. The limit is " + numLength, subField);

return false;

}

return true;

}

regards,

peter

From: [email protected] [mailto:[EMAIL PROTECTED] On Behalf Of KOMON Kazuya
Sent: Wednesday, February 22, 2006 1:40 AM
To: [email protected]
Subject: Re: [flexcoders] Validatior's binding problem?

Hi, Matt

Thank you for your reply.

I watched the source which generated, it became "undefined" in case of binding.
That was a reason.

Thank you,
KAZUYA KOMON

-----Original Message-----
Sorry, Validators in 1.5 can't accept binding, they're special
components. We changed that in 2.0.

Matt

-----Original Message-----
From: [email protected] [mailto:[EMAIL PROTECTED] On
Behalf Of KAZUYA KOMON
Sent: Monday, February 20, 2006 12:05 AM
To: [email protected]
Subject: [flexcoders] Validatior's binding problem?

Hi, all

I'm trying to bind attribute from MXML file to custom validator.
(using 1.5)

// Code(MXML) :
<RequiredFieldValidator xmlns="*" field="formData.text"
    numLength="{name.maxChars}"/>
    ^^^^^^^^^
<mx:TextInput id="name" width="200" maxChars="5" />

// Code(ActionScript - RequiredFieldValidator.as) :
class RequiredFieldValidator extends mx.validators.Validator {
    var numLength:Number;
        ^^^^^^^^^
    ...
}

If I set number directory (ex. numLength="5") , I can.
But if I use binding, I can't.
Is there something a good idea?

Any help is greatly appreciate.

Thanks,
KAZUYA KOMON

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RE: [flexcoders] Validatior's binding problem?

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