validates_format_of :email throws error

[jude]

Validates_format_of :email example available on api.rubyonrails.org is throwing errors.

class Person < ActiveRecord::Base validates_format_of :email, :with => %r\A([^@\s]+)@((?:[-a-z0-9]+.)+[a-z]{2,})\Z/, :on => :create end

validates :email, :format => { :with => %r\A([^@\s]+)@((?:[-a-z0-9]+.)+[a-z]{2,})\Z/, :on => :create }

Currently i am using rails 3.2.8 versions.

On loading getting the error as "syntax error, unexpected ']', expecting keyword_end"

[Jordon Bedwell]

On Wed, Oct 10, 2012 at 8:59 AM, jude <jude...@gmail.com> wrote:
> class Person < ActiveRecord::Base validates_format_of :email, :with =>
> %r\A([^@\s]+)@((?:[-a-z0-9]+.)+[a-z]{2,})\Z/, :on => :create end

> validates :email, :format => { :with =>
> %r\A([^@\s]+)@((?:[-a-z0-9]+.)+[a-z]{2,})\Z/, :on => :create }

%r\A([^@\s]+)@((?:[-a-z0-9]+.)+[a-z]{2,})\Z/

%r\A\Z/
%r/

Maybe use %r!! instead of %r/?