Recognizing that something changed on form

[pa...@firstenergycorp.com]

Hello,

I have a system that requires quite a bit of validation when a form is
submitted. What would be nice is for me to be able to tell if something has
actually changed on the form when it's submitted.

Here's what I came up with but I'm wondering if I'm reinventing the wheel.
Does Struts already have something that can do this for me?

I created a class that extends ActionForm and created fields in it that are
common to all my forms. One of the fields I called "formDataChanged". All
the other actionform classes in my system extend this new class.

On all my jsps, I created a hidden field called "formDataChanged". For all
the input fields (text, textInput, checkbox, etc) I set that hidden field's
value to "Y" using the "onChange" property.

Seems to work but not very elegant. Any other suggestions?

Thanks in advance for any input.

David







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