Rails - Mar 2008 - allow_blank in older version of Rails

Hi,

Our hosting company is using RoR 1.2.3.  This version does not seem to
support the "allow_blank => true" validation rule.  I have two
questions ...

1. Is it possible to combine other validation rules to simulate
"allow_blank"?

2. If #1 is not possible, is it possible to write a plugin that would
allow me to use the "allow_blank" directive?

Thanks, - Dave
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laredotornado-8iDLEspWrrZBDgjK7y7TUQ@public.gmane.org wrote:
> Our hosting company is using RoR 1.2.3.  This version does not seem to
> support the "allow_blank => true" validation rule.  I have two
> questions ...
> 
> 1. Is it possible to combine other validation rules to simulate
> "allow_blank"?
Add option
             :if => proc { |m| !m.blank? }

-- 
We develop, watch us RoR, in numbers too big to ignore.


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Thanks, but that didn''t seem to work.  When I left my "fax"
field
blank, I got an error message returned from validation "Fax cannot be
blank".  Here''s my validation rule:

  validates_presence_of     :fax, :if => proc { |m| !m.blank? }

What I would like is for the field to be allowed to be empty or nil,
but because of RoR 1.2.3 I can''t use allow_blank. - Dave

On Mar 19, 11:11 am, Mark Reginald James
<m...-bzGI/hKkdgQnC9Muvcwxkw@public.gmane.org>
wrote:
> laredotorn...-8iDLEspWrrZBDgjK7y7TUQ@public.gmane.org wrote:
> > Our hosting company is using RoR 1.2.3.  This version does not seem to
> > support the "allow_blank => true" validation rule.  I
have two
> > questions ...
>
> > 1. Is it possible to combine other validation rules to simulate
> > "allow_blank"?
>
> Add option
>              :if => proc { |m| !m.blank? }
>
> --
> We develop, watch us RoR, in numbers too big to ignore.
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On 19 Mar 2008, at 21:53, laredotornado-8iDLEspWrrZBDgjK7y7TUQ@public.gmane.org
wrote:
>
> Thanks, but that didn''t seem to work.  When I left my
"fax" field
> blank, I got an error message returned from validation "Fax cannot be
> blank".  Here''s my validation rule:
>
>  validates_presence_of     :fax, :if => proc { |m| !m.blank? }
>
> What I would like is for the field to be allowed to be empty or nil,
> but because of RoR 1.2.3 I can''t use allow_blank. - Dave
>
The object that gets passed to the proc is the record itself, so you  
need m.fax.blank?

Fred
> On Mar 19, 11:11 am, Mark Reginald James
<m...-bzGI/hKkdgQnC9Muvcwxkw@public.gmane.org> wrote:
>> laredotorn...-8iDLEspWrrZBDgjK7y7TUQ@public.gmane.org wrote:
>>> Our hosting company is using RoR 1.2.3.  This version does not  
>>> seem to
>>> support the "allow_blank => true" validation rule.  I
have two
>>> questions ...
>>
>>> 1. Is it possible to combine other validation rules to simulate
>>> "allow_blank"?
>>
>> Add option
>>              :if => proc { |m| !m.blank? }
>>
>> --
>> We develop, watch us RoR, in numbers too big to ignore.
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>

Frederick Cheung wrote:
> The object that gets passed to the proc is the record itself, so you 
> need m.fax.blank?
Whoops, thanks Fred. Another 4am blunder.

-- 
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Thanks guys.  Let me go one step further.  I downloaded a
"validates_as_phone" plugin.  So what I want to do is only validate
the fax field is a user has entered a non-empty value.  However, right
now, this rule

  validates_as_phone        :fax, :if => proc { |m| m.blank? }

doesn''t kick in, even if the user has entered a value like
"111".  How
can I adjust the above?

 - Dave

On Mar 19, 7:07 pm, Mark Reginald James
<m...-bzGI/hKkdgQnC9Muvcwxkw@public.gmane.org>
wrote:
> Frederick Cheung wrote:
> > The object that gets passed to the proc is the record itself, so you
> > need m.fax.blank?
>
> Whoops, thanks Fred. Another 4am blunder.
>
> --
> We develop, watch us RoR, in numbers too big to ignore.
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On 20 Mar 2008, at 17:14, laredotornado-8iDLEspWrrZBDgjK7y7TUQ@public.gmane.org
wrote:
>
> Thanks guys.  Let me go one step further.  I downloaded a
> "validates_as_phone" plugin.  So what I want to do is only
validate
> the fax field is a user has entered a non-empty value.  However, right
> now, this rule
>
>  validates_as_phone        :fax, :if => proc { |m| m.blank? }
>
Like i said before, that needs to be m.fax.blank?
> doesn''t kick in, even if the user has entered a value like
"111".  How
> can I adjust the above?
>
> - Dave
>
> On Mar 19, 7:07 pm, Mark Reginald James
<m...-bzGI/hKkdgQnC9Muvcwxkw@public.gmane.org> wrote:
>> Frederick Cheung wrote:
>>> The object that gets passed to the proc is the record itself, so
you
>>> need m.fax.blank?
>>
>> Whoops, thanks Fred. Another 4am blunder.
>>
>> --
>> We develop, watch us RoR, in numbers too big to ignore.
> >

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My bad, and it''s not even 4 in the morning.  Thanks for the follow-up,
Fred.  Works great, - Dave

On Mar 20, 12:25 pm, Frederick Cheung
<frederick.che...-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
wrote:
> On 20 Mar 2008, at 17:14,
laredotorn...-8iDLEspWrrZBDgjK7y7TUQ@public.gmane.org wrote:
>
>
>
> > Thanks guys.  Let me go one step further.  I downloaded a
> > "validates_as_phone" plugin.  So what I want to do is only
validate
> > the fax field is a user has entered a non-empty value.  However, right
> > now, this rule
>
> >  validates_as_phone        :fax, :if => proc { |m| m.blank? }
>
> Like i said before, that needs to be m.fax.blank?
>
>
>
> > doesn''t kick in, even if the user has entered a value like
"111".  How
> > can I adjust the above?
>
> > - Dave
>
> > On Mar 19, 7:07 pm, Mark Reginald James
<m...-bzGI/hKkdgQnC9Muvcwxkw@public.gmane.org> wrote:
> >> Frederick Cheung wrote:
> >>> The object that gets passed to the proc is the record itself,
so you
> >>> need m.fax.blank?
>
> >> Whoops, thanks Fred. Another 4am blunder.
>
> >> --
> >> We develop, watch us RoR, in numbers too big to ignore.- Hide
quoted text -
>
> - Show quoted text -
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Frederick Cheung wrote:
> On 20 Mar 2008, at 17:14,
laredotornado-8iDLEspWrrZBDgjK7y7TUQ@public.gmane.org wrote:
>>  validates_as_phone        :fax, :if => proc { |m| m.blank? }
>>
> Like i said before, that needs to be m.fax.blank?
Or !m.fax.blank?

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

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Have you tried

:allow_nil => true

?  I use that on 1.2.x and 2.0.2.

Peace,
Phillip
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