Re: validwhen calculation is true

[Laurie Harper]

I don't think the validWhen validator supports either type cooercion or 
arithmetic. You'll probably need to handle this validation 
programatically in your validate() method.

L.
Jefferson Wilson wrote:
I have a form where the user will peform a simple calculation in order to 
prevent spam (1 + 10 = 11).  As a result, I would like to use the 'validwhen' 
validation step to handle this.  I am overlooking something I believe.

I have created the following:

1)  Field Definition In validation.xml

<field    
     property="answer"
    depends="validwhen">
      
    <msg name="validwhen" key="errors.easy.math"/>
    <arg position = "0" key="display.answer"/>
      
    <var>
        <var-name>test</var-name>
        <var-value>(*this* = (firstArgument + secondArgument))</var-value>
    </var>
</field>

2)  Configure 'validwhen' validator in validation-rules.xml

<validator name="validwhen"         
                 classname="org.apache.struts.validator.validwhen.ValidWhen"
                 method="validateValidWhen"
                 methodParams="java.lang.Object,
                       org.apache.commons.validator.ValidatorAction,
                       org.apache.commons.validator.Field,
                       org.apache.struts.action.ActionMessages,
                       org.apache.commons.validator.Validator,
                       javax.servlet.http.HttpServletRequest"
          msg="errors.required">
</validator>

3)  Setup DynaValidatorActionForm

<form-bean name="contactInfoForm" 
type="org.apache.struts.validator.DynaValidatorActionForm">
...
...
...
<form-property name="firstArgument" type="java.lang.String"/>
<form-property name="secondArgument" type="java.lang.String"/>
<form-property name="answer" type="java.lang.String"/>
...
...
...
</form>

I am not sure why this is not working.  The DynaValidatorActionForm is setup with all fields as strings - this is a bean so this is fine.  I know that the 'validwhen' validator is setup properly because I am using it to validate two email addresses.  Since I am relatively new to Struts, is there a problem since the types are not Integers?  Where is this conversion taking place?  I am having a hard time with this.  Please advise.  

Thanks,
J.W.



      


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