class PolishValidators::NipValidator
Public Class Methods
new(nip)
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# File lib/polish_validators/nip_validator.rb, line 3 def initialize(nip) @nip = nip.to_s end
Public Instance Methods
valid?()
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# File lib/polish_validators/nip_validator.rb, line 7 def valid? return unless @nip =~ /\A\d{10}\Z/ weights = [6, 5, 7, 2, 3, 4, 5, 6, 7] nip = @nip.split(//).collect(&:to_i) checksum = weights.reduce(0) { |a, e| a + nip.shift * e } checksum % 11 == nip.shift end