Module ActiveMerchant::Billing::CreditCardFormatting
In: lib/active_merchant/billing/credit_card_formatting.rb

Methods

format  

Public Instance methods

format(number, option)

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

  format(2005, :two_digits)  # => "05"
  format(05,   :four_digits) # => "0005"

[Source]

    # File lib/active_merchant/billing/credit_card_formatting.rb, line 9
 9:       def format(number, option)
10:         return '' if number.blank?
11:         
12:         case option
13:           when :two_digits  ; sprintf("%.2i", number)[-2..-1]
14:           when :four_digits ; sprintf("%.4i", number)[-4..-1]
15:           else number
16:         end
17:       end

[Validate]