How to check if a URL is valid
ruby
Solution
Notice:
As pointed by @CGuess, there's a bug with this issue and it's been documented for over 9 years now that validation is not the purpose of this regular expression (see https://bugs.ruby-lang.org/issues/6520).
Use the `URI` module distributed with Ruby:
require 'uri'
if url =~ URI::regexp
# Correct URL
end
Like Alexander Günther said in the comments, it checks if a string contains a URL.
To check if the string is a URL, use:
url =~ /\A#{URI::regexp}\z/
If you only want to check for web URLs (`http` or `https`), use this:
url =~ /\A#{URI::regexp(['http', 'https'])}\z/
Problem
How can I check if a string is a valid URL? For example: ``` http://hello.it => yes http:||bra.ziz, => no ``` If this is a valid URL how can I check if this is relative to a image file?