Sha256: e50556076b78bf3cb947898b0350c9172559882b51f2b5405d21f506540b19cb
Contents?: true
Size: 872 Bytes
Versions: 11
Compression:
Stored size: 872 Bytes
Contents
class CusipValidator < ActiveModel::EachValidator
def validate_each(record, attribute, value)
unless valid?(value.to_s)
record.errors[attribute] << (options[:message] || I18n.t('flash_validators.errors.messages.cusip'))
end
end
private
def valid_format?(value)
value =~ /^[0-9A-Z]{9}$/
end
def valid_checksum?(value)
digits = value.split('').map { |i| i.match(/[A-Z]/) ? (i.ord - 55) : i.to_i }
even_values = digits.values_at(* digits.each_index.select { |i| i.even? })
odd_values = digits.values_at(* digits.each_index.select { |i| i.odd? })
values = odd_values.map { |i| i * 2 }.zip(even_values).flatten
values = values.inject(0) do |sum, i|
sum += (i / 10) + i % 10
end
((10 - values) % 10) % 10
end
def valid?(value)
valid_format?(value) &&
valid_checksum?(value)
end
end
Version data entries
11 entries across 11 versions & 1 rubygems