Given the string:
"Hello there world"
how can I create a URL-encoded string like this:
"Hello%20there%20world"
I would also like to know what to do if the string has other symbols too, like:
"hello there: world, how are you"
What would is the easiest way to do so? I was going to parse and then build some code for that.
In 2019, URI.encode is obsolete and should not be used.
require 'uri'
URI.encode("Hello there world")
#=> "Hello%20there%20world"
URI.encode("hello there: world, how are you")
#=> "hello%20there:%20world,%20how%20are%20you"
URI.decode("Hello%20there%20world")
#=> "Hello there world"
URI.encode('api.example.com', /\W/)
URI.encode("http://google.com") => "http://google.com". Better use CGI.escape ("https%3A%2F%2Fgoogle.com")
While the current answer says to utilize URI.encode that has been deprecated and obsolete since Ruby 1.9.2. It is better to utilize CGI.escape or ERB::Util.url_encode.
Ruby's URI is useful for this. You can build the entire URL programmatically and add the query parameters using that class, and it'll handle the encoding for you:
require 'uri'
uri = URI.parse('http://foo.com')
uri.query = URI.encode_www_form(
's' => "Hello there world"
)
uri.to_s # => "http://foo.com?s=Hello+there+world"
The examples are useful:
URI.encode_www_form([["q", "ruby"], ["lang", "en"]])
#=> "q=ruby&lang=en"
URI.encode_www_form("q" => "ruby", "lang" => "en")
#=> "q=ruby&lang=en"
URI.encode_www_form("q" => ["ruby", "perl"], "lang" => "en")
#=> "q=ruby&q=perl&lang=en"
URI.encode_www_form([["q", "ruby"], ["q", "perl"], ["lang", "en"]])
#=> "q=ruby&q=perl&lang=en"
These links might also be useful:
