Rails - Jul 2006 - Using :if with validates_xxx_of

I''m trying to make my validation conditional using the :if construct.

If I want to just test for the existence of the field EMAIL, it seems 
like I could just do:

:if => ''! EMAIL.nil?''

or do I have to use a proc?

And if I use a proc - what gets passed into the block - I assume the 
currently validating field - is that right?

Thanks,
Wes

-- 
Posted via http://www.ruby-forum.com/.

On 7/19/06, Wes Gamble <weyus@att.net> wrote:
>
> I''m trying to make my validation conditional using the :if
construct.
>
> If I want to just test for the existence of the field EMAIL, it seems
> like I could just do:
>
> :if => ''! EMAIL.nil?''
>
> or do I have to use a proc?
>
> And if I use a proc - what gets passed into the block - I assume the
> currently validating field - is that right?
>
> Thanks,
> Wes
>
> --
> Posted via http://www.ruby-forum.com/.
> _______________________________________________
> Rails mailing list
> Rails@lists.rubyonrails.org
> http://lists.rubyonrails.org/mailman/listinfo/rails

Hi Wes

YOu need to use either a proc or a method in the :if

I believe the obejct passed to the proc is the instance of the model itself.
Something like

:if => Proc.new { |model| model.EMAIL.nil? }
-------------- next part --------------
An HTML attachment was scrubbed...
URL:
http://wrath.rubyonrails.org/pipermail/rails/attachments/20060718/671bf899/attachment.html

Wes Gamble wrote:
> I''m trying to make my validation conditional using the :if
construct.
> 
> If I want to just test for the existence of the field EMAIL, it seems 
> like I could just do:
> 
> :if => ''! EMAIL.nil?''
> 
> or do I have to use a proc?
> 
> And if I use a proc - what gets passed into the block - I assume the 
> currently validating field - is that right?
> 
> Thanks,
> Wes
Got it working using :if => Proc.new { |job| (job.EMAIL !=
'''') } to only
validate when this field was submitted.

Of course, another trip to the source code.  It was unclear from the 
example whether the field itself or the AR object was passed into the 
Proc block.

Also, I couldn''t get the string form to work - I believe because I
don''t
understand how to pass a binding in.

Wes

-- 
Posted via http://www.ruby-forum.com/.