class Faker::NationalHealthService
Public Class Methods
british_number()
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# File lib/faker/default/nhs.rb, line 6 def british_number base_number = rand(400_000_001...499_999_999) # If the check digit is equivalent to 10, the number is invalid. # See https://en.wikipedia.org/wiki/NHS_number base_number -= 1 if check_digit(number: base_number) == 10 "#{base_number}#{check_digit(number: base_number)}".to_s .chars .insert(3, ' ') .insert(7, ' ') .join('') end
check_digit(legacy_number = NOT_GIVEN, number: 0)
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# File lib/faker/default/nhs.rb, line 18 def check_digit(legacy_number = NOT_GIVEN, number: 0) warn_for_deprecated_arguments do |keywords| keywords << :number if legacy_number != NOT_GIVEN end sum = 0 number.to_s.chars.each_with_index do |digit, idx| position = idx + 1 sum += (digit.to_i * (11 - position)) end result = 11 - (sum % 11) # A value of 11 is considered the same as 0 # See https://en.wikipedia.org/wiki/NHS_number return 0 if result == 11 result end