Rails - Jul 2006 - getting the last four digits of a string or number

I want to trim down a phone number to the last four digits before saving 
it to the db.  How would I do this?  For example, 800-555-1212 which 
could also be 8005551212, i want to save just 1212 (last four digits) 
only.

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phone_number = "number here"
last_four_digits = phone_number[phone_number.length - 4 ,4]

-=-

On 7/31/06, Greg N. <greg@busyashell.com> wrote:
>
> I want to trim down a phone number to the last four digits before saving
> it to the db.  How would I do this?  For example, 800-555-1212 which
> could also be 8005551212, i want to save just 1212 (last four digits)
> only.
>
> --
> Posted via http://www.ruby-forum.com/.
> _______________________________________________
> Rails mailing list
> Rails@lists.rubyonrails.org
> http://lists.rubyonrails.org/mailman/listinfo/rails
>
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Neeraj Kumar wrote:
> phone_number = "number here"
> last_four_digits = phone_number[phone_number.length - 4 ,4]
> 
> -=-
Thanks Neeraj!

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num_str = ''1234567890''
last_four = num_str[-4..-1]

Should also work


Ciao!

Gustav Paul
gustav@rails.co.za

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