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@bcardarella
Created December 20, 2010 18:35
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ActiveMerchant's Credit Card model updated to use ActiveModel::Validations
# Heavily borrowed from ActiveMerchant::Biling::CreditCard
# Updated for ActiveModel::Validations
class CreditCard
include ActiveMerchant::Billing::CreditCardMethods
include ActiveModel::Validations
include ActiveModel::Validations::Callbacks
include ActiveModel::Naming
## Attributes
cattr_accessor :require_verification_value
self.require_verification_value = false
# Essential attributes for a valid, non-bogus creditcards
attr_accessor :number, :month, :year, :type
attr_accessor :first_name, :last_name
validates_presence_of :first_name, :last_name
# Required for Switch / Solo cards
attr_accessor :start_month, :start_year, :issue_number
# Optional verification_value (CVV, CVV2 etc). Gateways will try their best to
# run validation on the passed in value if it is supplied
attr_accessor :verification_value
validates_presence_of :verification_value, :if => :requires_verification_value?
def initialize(attributes = {})
attributes.each do |method, value|
self.send("#{method}=", value)
end
end
# Provides proxy access to an expiry date object
def expiry_date
ActiveMerchant::Billing::CreditCard::ExpiryDate.new(@month, @year)
end
def expired?
expiry_date.expired?
end
def name
"#{@first_name} #{@last_name}"
end
# Show the card number, with all but last 4 numbers replace with "X". (XXXX-XXXX-XXXX-4338)
def display_number
self.class.mask(number)
end
def last_digits
self.class.last_digits(number)
end
validate :validate_essential_attributes
validate :validate_card_type
validate :validate_card_number
validate :validate_switch_or_solo_attributes
before_validation :sanitize_attributes
def requires_verification_value?
self.class.require_verification_value
end
private
def sanitize_attributes #:nodoc:
self.month = month.to_i
self.year = year.to_i
self.start_month = start_month.to_i unless start_month.nil?
self.start_year = start_year.to_i unless start_year.nil?
self.number = number.to_s.gsub(/[^\d]/, "")
self.type.downcase! if type.respond_to?(:downcase)
self.type = self.class.type?(number) if type.blank?
end
def validate_card_number #:nodoc:
errors.add :number, "is not a valid credit card number" unless CreditCard.valid_number?(number)
if errors[:number].empty? && errors[:type].empty?
errors.add :type, "is not the correct card type" unless CreditCard.matching_type?(number, type)
end
end
def validate_card_type #:nodoc:
errors.add :type, "is required" if type.blank?
errors.add :type, "is invalid" unless CreditCard.card_companies.keys.include?(type)
end
def validate_essential_attributes #:nodoc:
errors.add :month, "is not a valid month" unless valid_month?(@month)
errors.add :year, "expired" if expired?
errors.add :year, "is not a valid year" unless valid_expiry_year?(@year)
end
def validate_switch_or_solo_attributes #:nodoc:
if %w[switch solo].include?(type)
unless valid_month?(@start_month) && valid_start_year?(@start_year) || valid_issue_number?(@issue_number)
errors.add :start_month, "is invalid" unless valid_month?(@start_month)
errors.add :start_year, "is invalid" unless valid_start_year?(@start_year)
errors.add :issue_number, "cannot be empty" unless valid_issue_number?(@issue_number)
end
end
end
end
@anthonybishopric
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Shouldn't line 8 read 'extend ActiveModel::Naming' ?

@bcardarella
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@anthonybishopric it's possible, this was just a hack. I don't think I ever tested it.

@anthonybishopric
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@bcardarella thanks for posting though - going to see if i can use it myself. In order to make it work with a standard form_for helper, I had to add the following

include ActiveModel::Conversion
extend  ActiveModel::Naming

def persisted?
  false
end

@bcardarella
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I'm glad it's of some use :)

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