Class: VESR::ValidationDigitCalculator

Inherits:
Object
  • Object
show all
Defined in:
lib/vesr/validation_digit_calculator.rb

Constant Summary collapse

ESR9_TABLE =

Defined at www.pruefziffernberechnung.de/E/Einzahlungsschein-CH.shtml

[0, 9, 4, 6, 8, 2, 7, 1, 3, 5]

Class Method Summary collapse

Class Method Details

.call(value) ⇒ Object 



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# File 'lib/vesr/validation_digit_calculator.rb', line 7

def self.call(value)
  value = value.to_s

  digit = 0
  value.split('').each do |char|
    current_digit = digit + char.to_i
    digit = ESR9_TABLE[current_digit % 10]
  end
  digit = (10 - digit) % 10

  "#{value}#{digit}"
end