What regex can I use to get the domain name from a url in Ruby?

Question

I am trying to construct a regex to extract a domain given a url.

for:

http://www.abc.google.com/
http://abc.google.com/
https://www.abc.google.com/
         


        

Answer 1

you may be able to use the domain_name gem for this kind of work. From the README:

require "domain_name"
host = DomainName("a.b.example.co.uk")
host.domain         #=> "example.co.uk"