module FFaker::SSNSE
The Social Security number is a 12-digit number in the format: “YYYYDDMM-XXXX’
sv.wikipedia.org/wiki/Personnummer_i_Sverige
The 4 last digits (XXXX) are generated based on what region the person are born # in, the gender and the last one is a check digit using the luhn algorithm.
en.wikipedia.org/wiki/Luhn_algorithm
Usage: ssn(from: Time.local(1980, 2, 28),
to: Time.local(2000, 2, 28), gender: :male)
Constants
- GENDERS
Public Instance Methods
Source
# File lib/ffaker/ssn_se.rb, line 28 def ssn(opts = {}) from = opts[:from] || ::Time.local(1940, 1, 1) to = opts[:to] || ::Time.now gender = (opts[:gender] || fetch_sample(GENDERS)).to_s raise_error_on_bad_arguments(from, to, gender) generate_ssn(from, to, gender) end
Private Instance Methods
Source
# File lib/ffaker/ssn_se.rb, line 40 def generate_ssn(from, to, gender) birth_date = random_birth_time_between(from, to) birth_date_str = birth_date.strftime('%Y%m%d') # "19800228" region = random_region_for(gender) # "413" ssn_without_check_digit = birth_date_str + region # "19800228413" check_digit = luhn_check(ssn_without_check_digit) # "9" ssn_without_check_digit + check_digit # "198002284139" end
Source
# File lib/ffaker/ssn_se.rb, line 49 def raise_error_on_bad_arguments(from, to, gender) raise ArgumentError, 'Invalid from argument: from' unless to.is_a? ::Time raise ArgumentError, 'Invalid from argument: from' unless from.is_a? ::Time raise ArgumentError, 'Invalid argument: from > to' if from > to raise ArgumentError, 'Invalid argument: gender' unless GENDERS.include?(gender.to_s) end
Source
# File lib/ffaker/ssn_se.rb, line 56 def random_birth_time_between(from = ::Time.local(1940, 1, 1), to = ::Time.now) ::Time.at(from + (rand * (to.to_f - from.to_f))) end
Source
# File lib/ffaker/ssn_se.rb, line 68 def random_region_even rand(0..498) * 2 end
Source
# File lib/ffaker/ssn_se.rb, line 60 def random_region_for(gender) region_number = case gender when 'female' then random_region_even when 'male' then random_region_odd end three_character_string(region_number) end
Source
# File lib/ffaker/ssn_se.rb, line 72 def random_region_odd (rand(0..498) * 2) + 1 end
Source
# File lib/ffaker/ssn_se.rb, line 76 def three_character_string(number) format('%03d', number) end