class Faker::Company

def swedish_organisation_number

Get a random Swedish organization number. See more here https://sv.wikipedia.org/wiki/Organisationsnummer 
def swedish_organisation_number
  # Valid leading digit: 1, 2, 3, 5, 6, 7, 8, 9
  # Valid third digit: >= 2
  # Last digit is a control digit
  base = [sample([1, 2, 3, 5, 6, 7, 8, 9]), sample((0..9).to_a), sample((2..9).to_a), format('%06d', rand(10**6))].join
  base + luhn_algorithm(base).to_s
end