module FFaker::BankUS
Constants
- ROUTING_NUMBER_PREFIXES
Public Instance Methods
Source
# File lib/ffaker/bank_us.rb, line 10 def account_number(min_digits: 9, max_digits: 17) FFaker.numerify('#' * rand(min_digits..max_digits)) end
Source
# File lib/ffaker/bank_us.rb, line 14 def routing_number first_two_digits = fetch_sample(ROUTING_NUMBER_PREFIXES) partial_routing_number = FFaker.numerify("#{first_two_digits}######") ninth_digit = generate_ninth_digit(partial_routing_number) "#{partial_routing_number}#{ninth_digit}" end
Private Instance Methods
Source
# File lib/ffaker/bank_us.rb, line 25 def generate_ninth_digit(num_string) # This leverages the `Modules 10, Straight Summation` used for routing_numbers # See http://www.sxlist.com/techref/ecommerce/bank/routingnumber/index.htm # for more details num_array = num_string.chars.map(&:to_i) ( (7 * (num_array[0] + num_array[3] + num_array[6])) + (3 * (num_array[1] + num_array[4] + num_array[7])) + (9 * (num_array[2] + num_array[5])) ) % 10 end