Method: String.random

Defined in:

lib/core/facets/string/random.rb

.random(len = 32, character_set = ["A".."Z", "a".."z", "0".."9"]) ⇒ Object

Create a random String of given length, using given character set

Character set is an Array which can contain Ranges, Arrays, Characters

Examples

String.random
=> "D9DxFIaqR3dr8Ct1AfmFxHxqGsmA4Oz3"

String.random(10)
=> "t8BIna341S"

String.random(10, ['a'..'z'])
=> "nstpvixfri"

String.random(10, ['0'..'9'] )
=> "0982541042"

String.random(10, ['0'..'9','A'..'F'] )
=> "3EBF48AD3D"

BASE64_CHAR_SET =  ["A".."Z", "a".."z", "0".."9", '_', '-']
String.random(10, BASE64_CHAR_SET)
=> "xM_1t3qcNn"

SPECIAL_CHARS = ["!", "@", "#", "$", "%", "^", "&", "*", "(", ")", "-", "_", "=", "+", "|", "/", "?", ".", ",", ";", ":", "~", "`", "[", "]", "{", "}", "<", ">"]
BASE91_CHAR_SET =  ["A".."Z", "a".."z", "0".."9", SPECIAL_CHARS]
String.random(10, BASE91_CHAR_SET)
 => "S(Z]z,J{v;"

CREDIT: Tilo Sloboda

SEE: gist.github.com/tilo/3ee8d94871d30416feba

TODO: Move to random.rb in standard library?

# File 'lib/core/facets/string/random.rb', line 39

def self.random(len=32, character_set = ["A".."Z", "a".."z", "0".."9"])
  chars = character_set.map{|x| x.is_a?(Range) ? x.to_a : x }.flatten
  Array.new(len){ chars.sample }.join
end