How to get a query string from a URL in Rails


Is there is a way to get the query string in a passed URL string in Rails?

I want to pass a URL string:

How can I get id and empid?

If you have a URL in a string then use URI and CGI to pull it apart:

url    = ''
uri    = URI.parse(url)
params = CGI.parse(uri.query)
# params is now {"id"=>["4"], "empid"=>["6"]}

id     = params['id'].first
# id is now "4"

Please use the standard libraries for this stuff, don't try and do it yourself with regular expressions.