How to get part of a string in ruby?

Question

ruby

There is a line
string = 'https://qna.habr.com/question/new'You need to get everything between the slashes with the help of ruby, in this case it should work qna.habr.com
if the site came in this form qna.habr.com/question/newanyway, get it anyway , qna.habr.com
or if qna.habr.comit doesn’t matter. qna.habr.com

Advise how this can be done?

Answer 1

Certainly

require 'uri'

def extract_domain(url)
  url = "http://#{url}" if URI.parse(url).scheme.nil?
  URI.parse(url).host.downcase
end

extract_domain('https://qna.habr.com/question/new') #=> qna.habr.com
extract_domain('qna.habr.com/question/new') #=> qna.habr.com
extract_domain('qna.habr.com') #=> qna.habr.com

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