Struts 1.X validwhen 2007-08-15 - By Laurie Harper
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Viplav Kallepu wrote:
> Hi,
>
> I am using struts 1.3.8 for my application. For validation I am using
> validator framework. In one of my pages my form is submitted either by
> submit button or changing the dropdown list value. "action" is the name of
> the property in the corresponding actionform which stores the submit
> button's value for example if the submit button's value is "Modify" then
> action property value is "Modify" and action property value is "null" if I
> submit the page using change in the dropdown list value. I am using
> validwhen to check if the action property is "Modify" as shown below,
>
>
> <form name="EditUserForm">
>
> <field property="firstName" depends="validwhen">
>
> <var>
>
> <var-name>test</var-name>
>
> <var-value>((action != "Modify") or (*this* !=
> null))</var-value>
>
> </var>
>
> <arg key="ApplicantInfoDisplayActionForm.firstName"/>
>
> </field>
> </form>
> My doubt is can I use two validations using the which will be called only
> when action != "modify". like I want to check whether the email address is
> in right format so I used
> <field property="emailAddress" depends="validwhen,email"> and rest of the
> code as shown above but it is checking for email format even if action is
> not equal to "Modify". By seeing the code it seems that validwhen it is
> taking different and email it is taking different. Then how can I use both.
> Can any one please help me whether I can use validwhen In this situation. If
> not validwhen how can I use the validator framework.
I could be wrong, but I don't think what you want to do is supported. If
I understood you correctly, you want to be able to specify multiple
validations (in this case, 'validwhen' and 'email') and only apply the
second rule if the first one *fails*. The opposite is possible (as soon
as one validation rule fails, stop processing subsequent ones), but not
the behaviour you're looking for.
You will probably need to write a custom validator to accomplish your
goal. It might be possible to extend the validation framework to support
both semantics for 'depends' processing, though, in which case you might
consider contributing a patch for that as this would probably be useful
for others too.
L.
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