Apache Struts 2 Documentation > Home > Guides > Core Developers Guide > Validation > fieldexpression validator |
Validates a field using an OGNL expression.
<!-- Plain Validator Syntax --> <validators> <!-- Plain Validator Syntax --> <validator type="fieldexpression"> <param name="fieldName">myField</param> <param name="expression"><![CDATA[#myCreditLimit > #myGirfriendCreditLimit]]></param> <message>My credit limit should be MORE than my girlfriend</message> <validator> <!-- Field Validator Syntax --> <field name="myField"> <field-validator type="fieldexpression"> <param name="expression"><![CDATA[#myCreditLimit > #myGirfriendCreditLimit]]></param> <message>My credit limit should be MORE than my girlfriend</message> </field-validator> </field> </vaidators>