Re: Data validation, mapping, and error handling

[Thorbjørn Ravn Andersen <thunderaxiom@xxxxxxxxx>]

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.