Validation Philosophy

[David Graham]

I just presented Struts to my team as a strategic solution and it went very well. I got beat up on the validation though and didn't have a good answer. I explained how the validator works with action forms and how all your input is validated before it gets to the business layer but that wasn't sufficient.

A few people argued that they want the validation in the model objects so every app that uses the model must follow those rules. They said that having the validation before the model didn't make sense.

I'd really appreciate any arguments against this approach (or maybe they're right).

Thanks,
David





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