--- Francisco Exposito Aguilera wrote:
> I am doing just now a part for an administrator user

> and I want to show the error most clear as possible.


Oh, if it's for an admin that would understand and be
able to do something, then sure, be as detailed as you
want :)

> a) I must do an extra request to the database in
> order to know if the user exists to show the user
the
> ActionMessages.

Well... you can rely on getting a database constraint
violation if you want; I don't know as it *really*
matters. I guess I've just always done a lookup first,
as (in my mind, anyway) it's not really "exceptional"
that someone might choose the same username as
somebody else.

I tend to view database exceptions as something that
shouldn't happen unless something is really *wrong*
wrong.

There may not be a better reason than preference on
this issue :)

Seriously, I'm not sure there's any one right way to
do this; the declarative exception handling lets the
developer decide what exceptions to handle in the
framework, or they can be caught earlier and
ActionMessages can be used.

d.



 
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