Module: MerbMerchant::Billing::CreditCardFormatting

Included in:
Gateway
Defined in:
lib/merb_merchant/billing/credit_card_formatting.rb

Instance Method Summary collapse

Instance Method Details

#format(number, option) ⇒ Object

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

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



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# File 'lib/merb_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