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Given URLs like:
http://online.wsj.com/
http://online.wsj.com/article/SB10001424052970204409004577158764211274708.html
http://www.techcrunch.com/2012/01/13/techcrunch-coo/
Using Ruby/Rails, how can I return back just the domain?
online.wsj.com
online.wsj.com
techcrunch.com
No protocol, no slashes, just the subdomain if it's not www, and the domain, and ext?
788
Any name registered in the DNS is a domain name. To extract a domain name from a URL, first remove the protocol (http://, https://, ftp://, etc.), then remove any subdomains (www., blog., etc.), then remove the top-level domain (.com, . net, . org, etc.).
The =REGEXREPLACE() function is built-in Google Sheets and it extracts domains from URLs. What's great about is it's only a simple line of code that you can paste into your cell. The function is not super technical and you can change it any way you see fit.
First let's create a string with our URL (Note: If the URL isn't correctly structured you'll get an error). const url = 'https://www.michaelburrows.xyz/blog?search=hello&world'; Next we create a URL object using the new URL() constructor. let domain = (new URL(url));
Use Addressable::URI.parse and the #host instance method:
Addressable::URI.parse("http://techcrunch.com/foo/bar").host #=> "techcrunch.com"
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