Excuse me, i dont remembered the exact syntax.
I looked my code now, i use that way
:if => proc {|r| !r['email'].blank?}
Thanks Tom.
2011/7/22 Tom Meinlschmidt <[email protected]>
>
> this is wrong
>
> as in
> > validates_uniqueness_of :email, :if => proc {|email| !email.blank? }
>
> the |email| in proc will return object of record (not the attribute), so
> you hav eto use :if => proc {|r| !r.email.blank?}
>
> tom
>
> On Jul 22, 2011, at 17:39 , Fernando Almeida wrote:
>
> > You can use
> > validates_uniqueness_of :email, :if => proc {|email| !email.blank? }
> >
> > Search for conditional validations for more info.
> >
> >
> >
> > 2011/7/22 Piter Fcbk <[email protected]>
> > I have a model with a non obligatory field that must be unique. The code
> looks like this:
> >
> > class Person < ActiveRecord::Base
> > ...
> > validates :email,
> > :uniqueness => { :case_sensitive => false },
> > :length => { :maximum => 128 },
> > :email_format => true,
> > :allow_nil => true
> > ...
> > end
> >
> > When the form is submitted, if the email text field is empty, and empty
> string is set as email to the Person object. The problem comes when trying
> to create next person with no email since its storing "" instead of nil.
> > In order to solve this I want to store nil for the empty string (for this
> field only).
> >
> > Should I do the check and set on the controller or in the model? I would
> go for the model, but I'm open to suggestions.
> > In case its done in the model, should be done by overriding the attribute
> setter or using a call back triggered by .save like before_save?
> >
> > Thanks for the help
> >
> > --
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> >
> >
> > --
> > Fernando Almeida
> > www.fernandoalmeida.net
> >
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> --
>
> ===============================================================================
> Tomas Meinlschmidt, MS {MCT, MCP+I, MCSE, AER}, NetApp Filer/NetCache
>
> www.meinlschmidt.com www.maxwellrender.cz www.lightgems.cz
>
> ===============================================================================
>
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--
Fernando Almeida
www.fernandoalmeida.net
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