Contents

module GS1
  module Validations
    # Ensures correct check digit validation.
    #
    module CheckDigitValidation
      def validate_check_digit
        errors << 'Check digit mismatch' unless valid_check_digit?
      end

      def valid_check_digit?
        return false unless data

        GS1::CheckDigitCalculator.with_sequence(data[0..-2]) == data
      rescue ArgumentError
        false
      end
    end
  end
end

Version data entries

7 entries across 7 versions & 1 rubygems

Version	Path
gs1-1.1.0	lib/gs1/validations/check_digit_validation.rb
gs1-1.0.0	lib/gs1/validations/check_digit_validation.rb
gs1-0.1.8	lib/gs1/validations/check_digit_validation.rb
gs1-0.1.7	lib/gs1/validations/check_digit_validation.rb
gs1-0.1.6	lib/gs1/validations/check_digit_validation.rb
gs1-0.1.5	lib/gs1/validations/check_digit_validation.rb
gs1-0.1.3	lib/gs1/validations/check_digit_validation.rb