Rails - Mar 2005 - More Then One Validation Rule For One Instance Variable

I don''t think I am using the right terminology!

I want to use two different validation rules on one instance variable, that
variable being email that comes from a form.  I want to verify the presence_of
and the format_of.  If it is empty then I get both error messages.  One from
each validation.  Is their a rails way to specify to do the first validation
and if it passes go to next.  It bothers me that two messages appear on the
screen i.e. email is required and format of email is invalid.

What do you guys suggest?

On Fri, 11 Mar 2005 15:09:41 -0500, John Baku
<john-CC0oh5EnFfVBDgjK7y7TUQ@public.gmane.org>
wrote:
> I want to use two different validation rules on one instance variable, that
> variable being email that comes from a form.  I want to verify the
presence_of
> and the format_of.  If it is empty then I get both error messages.  One
from
> each validation.  Is their a rails way to specify to do the first
validation
> and if it passes go to next.  It bothers me that two messages appear on the
> screen i.e. email is required and format of email is invalid.
> 
> What do you guys suggest?
I could be wrong on this, but I think having both validations is
redundant. Eg, you can just simply use validates_format_of, and if the
field is blank, it''ll fail that test. validates_presence_of is
completely redundant and won''t catch any errors that
validates_format_of won''t already catch.

-- 
One Guy With A Camera
http://rbpark.ath.cx

I agree with that but in this case it has to do with error messages.  I prefer
giving specific error messages then combining two error messages into one.

Any ideas on how to do what I want to do?
> On Fri, 11 Mar 2005 15:09:41 -0500, John Baku
<john-CC0oh5EnFfVBDgjK7y7TUQ@public.gmane.org> wrote:
> > I want to use two different validation rules on one instance variable,
that
> > variable being email that comes from a form.  I want to verify the
> presence_of
> > and the format_of.  If it is empty then I get both error messages. 
One
> from
> > each validation.  Is their a rails way to specify to do the first
> validation
> > and if it passes go to next.  It bothers me that two messages appear
on the
> > screen i.e. email is required and format of email is invalid.
> >
> > What do you guys suggest?
>
> I could be wrong on this, but I think having both validations is
> redundant. Eg, you can just simply use validates_format_of, and if the
> field is blank, it''ll fail that test. validates_presence_of is
> completely redundant and won''t catch any errors that
> validates_format_of won''t already catch.
>
> --
> One Guy With A Camera
> http://rbpark.ath.cx
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>

* John Baku (john-CC0oh5EnFfVBDgjK7y7TUQ@public.gmane.org) [050311
16:09]:
> I agree with that but in this case it has to do with error messages.  I
prefer
> giving specific error messages then combining two error messages into one.
> 
> Any ideas on how to do what I want to do?
Sure, declare your own validation method which returns different error
messages depending upon the nature of the validation failure.

Rick
-- 
 http://www.rickbradley.com    MUPRN: 27
                       |  am familiar
   random email haiku  |  with the DOS issues they had
                       |  a little while back.