ruby-on-rails - Rails 3 validate IPv4 and IPv6 format

Question

I know the validation format for IPv4 and IPv6. But not sure how I can combine them so atleast one format should be true. Here is my validation

validates :src_ip_addr, :presence => true, :uniqueness => true,
            :format => { :with => Resolv::IPv4::Regex, :message => "Not an valid IPv4 format"}

  validates :src_ip_addr, :presence => true, :uniqueness => true,
            :format => { :with => Resolv::IPv6::Regex, :message => "Not an valid IPv6 format"}

How I can combine them so if one format is correct then validation should work. Should fail only if ipv4 and ipv6 format is not correct.

Thanks.

Answer 1

You can also combine them with Regexp.union:

:format => { :with => Regexp.union(Resolv::IPv4::Regex, Resolv::IPv6::Regex) ...