Zipcode validation

Hi All,

How to validate Zip/Postal code enterd is valid based on country
selected? Is there any plugin for checking zipcode format for different
countries..

Thanks

I dont know on country level, but on US you can check this gem http://rubygems.org/gems/zip-code-info

Depends on what you want the postcode for. If it's for something like
geocoding, you might be better off relying on the geocoder to validate
the input.

There's some stuff about this, but the validation is ultimately
country-specific (and can change - apparently Ireland is debating the
creation of a postcode system):

- https://github.com/globaldev/going_postal - validates postcodes for
UK, US, Canada, Australia, New Zealand, and South Africa
- http://search.cpan.org/~abigail/Regexp-Common-2011121001/lib/Regexp/Common/zip.pm
- not directly applicable, but this is a Perl module with regexes for
more countries. The syntax should translate readily to Ruby

Hope this helps!

--Matt Jones