Rails - Oct 2005 - How to rescue duplicate entry errors when calling update_attributes

I know this is a simple question but I couldn''t find an answer in the
documentation or the rails book.  I''m getting an error in a call to
update_attributes on a model because I am trying to change a field to
a value that already exists and has a unique index.  What''s the right
way to catch a duplicate entry error and report that to the user in a
friendly way?  The only exception I get in this case is
StatementInvalid so I''m not sure if I am safe in assuming that the
error was due to a duplicate entry.

Thanks for your help.

Carl

On 18.10.2005, at 8.03, Carl Youngblood wrote:
> I know this is a simple question but I couldn''t find an answer in
the
> documentation or the rails book.  I''m getting an error in a call
to
> update_attributes on a model because I am trying to change a field to
> a value that already exists and has a unique index.  What''s the
right
> way to catch a duplicate entry error and report that to the user in a
> friendly way?
validates_uniqueness_of :my_field ?

//jarkko

--
Jarkko Laine
http://jlaine.net
http://odesign.fi



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Thanks!  I had forgotten to add the field in question to that validation.

On 10/18/05, Jarkko Laine <jarkko-k1O+Gnc6WpmsTnJN9+BGXg@public.gmane.org>
wrote:
>
> On 18.10.2005, at 8.03, Carl Youngblood wrote:
>
> > I know this is a simple question but I couldn''t find an
answer in the
> > documentation or the rails book.  I''m getting an error in a
call to
> > update_attributes on a model because I am trying to change a field to
> > a value that already exists and has a unique index.  What''s
the right
> > way to catch a duplicate entry error and report that to the user in a
> > friendly way?
>
> validates_uniqueness_of :my_field ?