Object
The Check object is a plain old Ruby object, similar to CreditCard. It supports validation of necessary attributes such as checkholder’s name, routing and account numbers, but it is not backed by any database.
You may use Check in place of CreditCard with any gateway that supports it. Currently, only BraintreeGateway supports the Check object.
# File lib/active_merchant/billing/check.rb, line 17 def name @name ||= "#{@first_name} #{@last_name}".strip end
# File lib/active_merchant/billing/check.rb, line 21 def name=(value) return if value.blank? @name = value segments = value.split(' ') @last_name = segments.pop @first_name = segments.join(' ') end
# File lib/active_merchant/billing/check.rb, line 44 def type 'check' end
Routing numbers may be validated by calculating a checksum and dividing it by 10. The formula is:
(3(d1 + d4 + d7) + 7(d2 + d5 + d8) + 1(d3 + d6 + d9))mod 10 = 0
See en.wikipedia.org/wiki/Routing_transit_number#Internal_checksums
# File lib/active_merchant/billing/check.rb, line 52 def valid_routing_number? d = routing_number.to_s.split('').map(&:to_i).select { |d| (0..9).include?(d) } case d.size when 9 then checksum = ((3 * (d[0] + d[3] + d[6])) + (7 * (d[1] + d[4] + d[7])) + (d[2] + d[5] + d[8])) % 10 case checksum when 0 then true else false end else false end end
# File lib/active_merchant/billing/check.rb, line 30 def validate [:name, :routing_number, :account_number].each do |attr| errors.add(attr, "cannot be empty") if self.send(attr).blank? end errors.add(:routing_number, "is invalid") unless valid_routing_number? errors.add(:account_holder_type, "must be personal or business") if !account_holder_type.blank? && !]business personal].include?(account_holder_type.to_s) errors.add(:account_type, "must be checking or savings") if !account_type.blank? && !]checking savings].include?(account_type.to_s) end
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