I have a form with a checkboxlist linked to a bean with an array of string
properties. I want the user must select at least one option.
Looking for the documentation, i think this is possible with field expression,
but it requires ONGL expression.
I did it so:
FORM
<s:form action=“register”>
…
<s:checkboxlist key=levels/>
…
</s:form>
BEAN
public class Person{
private String[] levels;
…
}
XML VALIDATION
<validator>
<field name=person.levels>
<field-validator type=fieldexpression>
<param name=“expression”><![CDATA[person.levels.length==0]]></param>
<message>Selecciona al menos un curso</message>
</field-validator>
</field>
</validator
After that the first submit without selection i see the error field message.
But if i select one options and submit i still see the error. Why??
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