Question

in struts 2 how can i use the actionName-validation.xml to make a text field required based on another texfield value

i think this is done using custom validator but how?
i don’t want to use javascript to do this.

Answer 1

You need something like this:

<validator type="required" short-circuit="true">
  <param name="fieldName">textfield1</param>
  <message>You must enter a value for textfield1.</message>
</validator>

<validator type="required" short-circuit="true">
  <param name="fieldName">textfield2</param>
  <message>You must enter a value for textfield2.</message>
</validator>

<validator type="expression">
  <param name="expression">textfield1 gt textfield2</param>
  <message>textfield2 must be greater than textfield1.</message>
</validator>

See the “Short-Circuiting Validator” docs.