Question

Here is a snippet from a Sinatra app where users will be submitting urls. I must ensure that http:// is prepended to the url in order to route outside my application. How can I state site once and access it’s attributes? (Line 3)

  p.params= "www.ruby-lang.org/en/"
  site = URI(p.params[:url])
  site = "http://" + site.host + site.path + site.query 

Answer 1

If you need to ensure the url begins with http://, why not use a regex?

p.params = "www.ruby-lang.org/en/"
site = p.params.gsub(/^(­?!http:\/\­/)/, "http­://")
# site = http://www.ruby-lang.org/en/

^(­?!http:\/\­/) matches only when the beginning of the string is not followed by http://