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From mraible <m...@raibledesigns.com>
Subject Re: FieldExpressionValidator: How do I reference field names?
Date Thu, 19 Jul 2007 16:40:44 GMT

If you're right, I'd expect the following expression make friendEmail
required when the "friend" reason is checked (it's a radio button): 

reason == 'friend' and friendEmail != null

However, if I check friend and don't fill out the e-mail address, it still
passes validation. Based on the error message I'm getting in my logs (see
below), I'm guessing that I need to do some sort of "friendEmail != null"
check, but I'm already doing that.

WARN - FieldExpressionValidator.validate(80) | Got result of null when
trying to get Boolean.

Here's my full validation rule:

    <field name="friendEmail">
        <field-validator type="fieldexpression">
            reason == 'friend' and friendEmail != null
            <message>Please provide your friend's email</message>
        </field-validator>
    </field>

Thanks,

Matt


Eric Rank-2 wrote:
> 
> At risk of pointing out the obvious, I notice is that your expression  
> validates when:
> 
> 1. reason is "friend"
> 2. and when friendEmail is null
> 
> I'm guessing that you want it to successfully validate when
> 
> 1. reason equals "friend"
> 2. And when friendEmail IS NOT null
> 
> Could that be the problem?
> 
> I only point it out because the backwards logic involved with  
> validators has bitten me in the past. I always have to remind myself  
> that my validators test for things that I want, not for things that  
> will cause failure.
> 
> Eric Rank
> 
> 
> 
> 
> On Jul 18, 2007, at 3:08 PM, mraible wrote:
> 
>>
>> That didn't work - how about this: http://rafb.net/p/cmnEKB18.html
>>
>>
>> mraible wrote:
>>>
>>> Looks like Nabble was escaping my HTML - let's try again with HTML  
>>> Format
>>> checked:
>>>
>>>     <field name="reason">
>>>         <field-validator type="requiredstring">
>>>             true
>>>             <message>Reason is required.</message>
>>>         </field-validator>
>>>     </field>
>>>
>>>     <!-- Plain validator syntax -->
>>>     <validator type="fieldexpression">
>>>         friendEmail
>>>         reason.equals('friend') and friendEmail == null
>>>         <message>Please provide your friend's email</message>
>>>     </validator>
>>>
>>>     <!-- Field validator syntax -->
>>>     <field name="friendEmail">
>>>         <field-validator type="fieldexpression">
>>>             reason.equals('friend') and friendEmail == null
>>>             <message>Please provide your friend's email</message>
>>>         </field-validator>
>>>     </field>
>>>
>>>
>>> Musachy Barroso wrote:
>>>>
>>>> I've read this like 10 times just to make sure I'm not missing  
>>>> something,
>>>> but:
>>>>
>>>>  <validator type="fieldexpression">
>>>>        friendEmail
>>>>        reason.equals('friend') and friendEmail == null
>>>>        <message>Please provide your friend's email</message>
>>>>    </validator>
>>>>
>>>>
>>>> why is "friendEmail" in the expression?(should be "
>>>> reason.equals('friend')
>>>> and friendEmail == null" right?)
>>>>
>>>> musachy
>>>>
>>>> On 7/18/07, mraible <matt@raibledesigns.com> wrote:
>>>>>
>>>>>
>>>>> I'm trying to use a FieldExpressionValidator (or  
>>>>> ExpressionValidator) to
>>>>> compare fields. Unfortunately, it doesn't seem to be working. I  
>>>>> have a
>>>>> radio
>>>>> button (named "reason") and a text field named "friendEmail". If  
>>>>> the
>>>>> selected radio has a reason of "friend", I want to require the text
>>>>> field.
>>>>> However, the expression "reason.equals('friend') and friendEmail ==
>>>>> null"
>>>>> doesn't seem to work. Is this expression syntax correct, or do I  
>>>>> have to
>>>>> do
>>>>> something additional to get a handle on the "reason" and  
>>>>> "friendEmail"
>>>>> values?
>>>>>
>>>>>     <field name="reason">
>>>>>         <field-validator type="requiredstring">
>>>>>             true
>>>>>             <message">Reason is a required field.</message>
>>>>>         </field-validator>
>>>>>     </field>
>>>>>
>>>>>     <validator type="fieldexpression">
>>>>>         friendEmail
>>>>>         reason.equals('friend') and friendEmail == null
>>>>>         <message>Please provide your friend's email</message>
>>>>>     </validator>
>>>>>
>>>>> I've also tried the following, but no dice:
>>>>>
>>>>>     <field name="friendEmail">
>>>>>         <field-validator type="fieldexpression">
>>>>>             reason.equals('friend')
>>>>>             <message>Please provide your friend's email</message>
>>>>>         </field-validator>
>>>>>     </field>
>>>>>
>>>>> Thanks,
>>>>>
>>>>> Matt
>>>>> --
>>>>> View this message in context:
>>>>> http://www.nabble.com/FieldExpressionValidator%3A-How-do-I- 
>>>>> reference-field-names--tf4104715.html#a11673436
>>>>> Sent from the Struts - User mailing list archive at Nabble.com.
>>>>>
>>>>>
>>>>> ------------------------------------------------------------------- 
>>>>> --
>>>>> To unsubscribe, e-mail: user-unsubscribe@struts.apache.org
>>>>> For additional commands, e-mail: user-help@struts.apache.org
>>>>>
>>>>>
>>>>
>>>>
>>>> -- 
>>>> "Hey you! Would you help me to carry the stone?" Pink Floyd
>>>>
>>>>
>>>
>>>
>>
>> -- 
>> View this message in context: http://www.nabble.com/ 
>> FieldExpressionValidator%3A-How-do-I-reference-field-names-- 
>> tf4104715.html#a11677727
>> Sent from the Struts - User mailing list archive at Nabble.com.
>>
>>
>> ---------------------------------------------------------------------
>> To unsubscribe, e-mail: user-unsubscribe@struts.apache.org
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>>
> 
> 
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> 
> 

-- 
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