I have a DynaValidatorForm that holds many items, including an ArrayList of DynaValidatorForms. Calling validate() on the main form works just fine, but how do I get the nested forms to validate?
If I iterate through the ArrayList, and cast them back to a DynaValidatorForm and then simply call validate on them, I get:
java.lang.NullPointerException at org.apache.struts.validator.DynaValidatorForm.validate(DynaValidatorForm.java:144)
Any ideas?
Ok couple of things...
1) I would NOT nest forms. I think that's just asking for trouble. I would simply use ONE form and have your collection a s property in that form. (The of course your collection can hold objects which have collections..etc etc). But just nest a collection of beans, or even one bean with the collections inside.
2) I'm not sure how declarative validation works over nested objects (using validation rules). I know when I have a lot of nested objects (which I do quite often), I find it easiest to just create my own validation (Recurse over the nested objects and perform the checks).
-- Rick
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