Chapter 17. Input validation

17.1 Input validation in application design 378
17.2 Server-side validation and its problems 381
17.3 Client-side validation 384
17.4 Object-oriented server-side validation 393
17.5 Synchronizing server-side and client-side validation 409
17.6 Summary 412

“What could be less exciting than a company that makes retread tires in Muscatine, Iowa?” asks Peter Lynch in his investment book Beating the Street.

I don’t know what’s even less exciting, but I can think of plenty of things that are equally dull. Lots of routine, unexciting activities go on in the so-called real world. Input validation is one of them. It’s not glamorous; there will never be a Hollywood movie about it. It’s not even visible most of the time, so ...

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