Generate Unique Random String With Letters And Numbers In Lower Case

Question

How can I fix this code so it generates unique random letters and numbers in lower case?

api_string = (0...32).map{65.+(rand(25)).chr}.join    

Answer 1

Newer versions of Ruby support SecureRandom.base58, which will get you much denser tokens than hex, without any special characters.

> SecureRandom.base58(24)
> "Zp9N4aYvQfz3E6CmEzkadoa2"