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ActiveMerchant::Billing::CreditCardFormatting

Public Instance Methods

format(number, option) click to toggle source

This method is used to format numerical information pertaining to credit cards.

format(2005, :two_digits)  # => "05"
format(05,   :four_digits) # => "0005"
# File lib/active_merchant/billing/credit_card_formatting.rb, line 9
def format(number, option)
  return '' if number.blank?
  
  case option
    when :two_digits  ; sprintf("%.2i", number)[-2..-1]
    when :four_digits ; sprintf("%.4i", number)[-4..-1]
    else number
  end
end

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