class CusipValidator
Public Instance Methods
validate_each(record, attribute, value)
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# File lib/active_validation/validators/cusip_validator.rb, line 5 def validate_each(record, attribute, value) return if valid?(value.to_s) record.errors[attribute] << (options[:message] || I18n.t('active_validation.errors.messages.cusip')) end
Private Instance Methods
valid?(value)
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# File lib/active_validation/validators/cusip_validator.rb, line 34 def valid?(value) valid_length?(value) && valid_format?(value) && valid_checksum?(value) end
valid_checksum?(value)
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rubocop:disable Lint/UselessAssignment
# File lib/active_validation/validators/cusip_validator.rb, line 15 def valid_checksum?(value) digits = value.chars.map { |chr| /[A-Z]/.match?(chr) ? (chr.ord - 55) : chr.to_i } even_values = digits.values_at(* digits.each_index.select(&:even?)) odd_values = digits.values_at(* digits.each_index.select(&:odd?)) values = odd_values.map { |int| int * 2 }.zip(even_values).flatten values = values.inject(0) { |sum, int| sum += (int / 10) + int % 10 } ((10 - values) % 10) % 10 end
valid_format?(value)
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rubocop:enable Lint/UselessAssignment
# File lib/active_validation/validators/cusip_validator.rb, line 26 def valid_format?(value) value =~ /^[0-9A-Z]{9}$/ end
valid_length?(value)
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# File lib/active_validation/validators/cusip_validator.rb, line 30 def valid_length?(value) value.present? end