validator-rules-custom.xml
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<!DOCTYPE form-validation PUBLIC
"-//Apache Software Foundation//DTD Commons Validator Rules Configuration 1.3.0//EN"
"http://jakarta.apache.org/commons/dtds/validator_1_3_0.dtd">
<form-validation>
<global>
<validator name="twofields"
classname="com.myproject.webapp.util.ValidationUtil"
method="validateTwoFields"
methodParams="java.lang.Object,
org.apache.commons.validator.ValidatorAction,
org.apache.commons.validator.Field,
org.springframework.validation.Errors"
depends="required"
msg="errors.twofields">
<javascript><![CDATA[
function validateTwoFields(form) {
var bValid = true;
var focusField = null;
var i = 0;
var fields = new Array();
oTwoFields = new twofields();
for (x in oTwoFields) {
var field = form[oTwoFields[x][0]];
var secondField = form[oTwoFields[x][2]("secondProperty")];
if (field.type == 'text' ||
field.type == 'textarea' ||
field.type == 'select-one' ||
field.type == 'radio' ||
field.type == 'password') {
var value;
var secondValue;
// get field's value
if (field.type == "select-one") {
var si = field.selectedIndex;
value = field.options[si].value;
secondValue = secondField.options[si].value;
} else {
value = field.value;
secondValue = secondField.value;
}
if (value != secondValue) {
if (i == 0) {
focusField = field;
}
fields[i++] = oTwoFields[x][1];
bValid = false;
}
}
}
if (fields.length > 0) {
focusField.focus();
alert(fields.join('\n'));
}
return bValid;
}]]>
</javascript>
</validator>
</global>
</form-validation>