Class: PolishValidators::RegonValidator

Inherits:
Object
  • Object
show all
Defined in:
lib/polish_validators/regon_validator.rb

Instance Method Summary collapse

Constructor Details

#initialize(regon) ⇒ RegonValidator

Returns a new instance of RegonValidator.



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# File 'lib/polish_validators/regon_validator.rb', line 3

def initialize(regon)
  @regon = regon.to_s
end

Instance Method Details

#valid? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/polish_validators/regon_validator.rb', line 7

def valid?
  return unless @regon =~ /\A\d{9,14}\Z/

  weights8 = [8, 9, 2, 3, 4, 5, 6, 7]
  weights14 = [2, 4, 8, 5, 0, 9, 7, 3, 6, 1, 2, 4, 8]

  regon = @regon.split(//).collect(&:to_i)
  checksum = (regon.length == 9 ? weights8 : weights14).reduce(0) { |a, e| a + regon.shift * e }

  checksum % 11 == regon.shift
end