Re: [Zope] How to check if a string contains some characters??

On Monday 12 March 2001, at 17 h 31, the keyboard of "David Burton" <eloquence@eloquent-designs.f2s.com> wrote:

A better idea would normally to try to handle invalid values before it reaches ZOPE. Something like this is usually best handled by Javascript verification.

Bad idea: what if the browser does not have JavaScript or decided to switch it off (because he dislikes pages which resizes the browser or popup when you leave)? JavaScript is a convenience for users: you are informed that something is wrong before you hit Submit. But the server MUST test anyway. (Think of security issues if all the checking is client-side.)