I have a JSP Page which has two dropdown fields. If the user selects something from first dropdown and doesn�t selects anything from the second dropdown, it displays me an error message saying �This field is required�. But now I have a scenario wherein, on selecting a particular value from first dropdown should not force the user to select something from the second dropdown (i.e he should be able to proceed even if he doesn�t selects anything from the second dropdown). How can I implement this is Struts ?
Conditional cross-field validation like this is possible in Struts since version 1.1 which added the requiredif validator. This validation rule has been deprecated in favour of the new rule validwhen which has been added in version 1.2.0