Generating GUIDs in Ruby
guid, ruby
Solution
As of Ruby 1.9, uuid generation is built-in. Use the `SecureRandom.uuid` function.
For example:
require 'securerandom'
SecureRandom.uuid # => "96b0a57c-d9ae-453f-b56f-3b154eb10cda"
Problem
I have a problem that is really easily solved with GUIDs. In particular, for a password reset workflow, I would like to send a GUID token to a user's email and have them reset their password using the token. Since GUIDs are unique, this is pretty secure and saves me emailing people passwords, which is risky. I noticed there is one uuid gem @ rubyforge but it looks quite old, and it writes stuff to the file system. Does anyone know of any other gems that can create a globally unique identifier? I know I can just fall back to: ``` (0..16).to_a.map{ |a| rand(16).to_s(16) }.join ``` But it does not really seem like a proper GUID ...