Create a unique "string hash" based off of a seed string

application_helper.rb

def random_str(length, options = {})
  srand(options[:seed].int_hash)
  (0...length).map{97.+(rand options[:range]).chr}.join
end


# random_str(5, {seed: "edward", range: 5})
# => "adbae"
# random_str(10, {seed: "edward", range: 26})
# => "yhwtfxpjqe"

config-initializers-extend_classes.rb

require 'digest/md5'

class String
  def int_hash
    Digest::MD5.hexdigest(self).to_i(16)
  end
end