class FulfillmentHistory include Mongoid::Document include Mongoid::Attributes::Dynamic field :prescriptionNumber, as: :prescription_number, type: String field :dispenseDate, as: :dispense_date, type: Integer field :quantityDispensed, as: :quantity_dispensed, type: Hash field :fillNumber, as: :fill_number, type: Integer field :fillStatus, as: :fill_status, type: String belongs_to :provider, class_name: "Provider" def shift_dates(date_diff) self.dispenseDate = (self.dispenseDate.nil?) ? nil : self.dispenseDate + date_diff end end