Aaron Bartell skrev den 09-06-2008 22:13:

I think it depends on how you look at it. For instance, you are trying to
use the JSF required="true" parameter to ease your development, but after
learning how that approach works I prefer to simply add an IF statement in
my handler code to test for the same thing so I can have uniform validation
(i.e. not have some of it in the UI layer and some in the controller layer).
You can always let the UI validate stuff like "this should be a valid number" and "must not be empty", and leave the context dependent validation to the action called like "This customer do not accept these kind of deliveries" etc.

I found the JSF validating framework to be quite complex, but apparently others can make it work well.


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