example project

WorldPay

• cart_id, merchants reference to the transaction
• amount
• currency, defaults to USD
• description, description about the selling item, defaults to empty string

For recurring billing

• is_recurring (Bool: True/False, defauts to False)
• billing_interval_unit, Units for billing interval, day/week/month/year, defaults to month
• billing_interval_multiplier, The billing interval unit multiplier, default to 1
  The actual interval between payments is billing_interval_unit multiplied by billing_interval_multiplier.
  EX: For billing interval of 15 days,

  billing_interval_unit = day

  billing_interval_multiplier = 15

  Note: Minumum interval time is 2 weeks (14 days)
• number_of_payments, Integer, number of times the customer has to be charged(including first month), default to 12