[flexcoders] Flex 2.0 : How to validate form fields ?

[Michel Bertrand]

Title: Flex 2.0 : How to validate form fields ?








Hi !


I've tried to find an approuch to validate fields of a data form. Actually, my form looks like:


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

<mx:Canvas .... creationComplete="onComplete()" >


<mx:Metadata>

[Event("validate")]

</mx:Metadata>


<mx:Script>

public function validate(event:Object) : Void {

validator.validate();

}


public function onComplete() : Void {

this.addEventListener("validate",this.validate);

this.dispatchEvent(new Event("validate"));

}

</mx:Script>


<mx:StringValidator id="validator" 

source="{name}" 

property="text" 

required="true"

requiredFieldError="Field is empty."/>


<mx:Form label="test">

<mx:FormItem label="Name" fontWeight="bold">

<mx:TextInput id="name" editable="true" maxChars="30" width="300"/> 

</mx:FormItem>


.....


Running this code I have ever had a Flash Player error:

"Error: The source attribute must be specified when the property attribute is specified.".


I'm using Flash Player 8.5.


Any ideas ?


Thanks in advance !

Michel. 









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