class ProviderPerformance
  include Mongoid::Document
  include Mongoid::Attributes::Dynamic
  
  field :start_date, type: Integer
  field :end_date, type: Integer
  
  belongs_to :provider
  embedded_in :record
  

  def shift_dates(date_diff)
    self.start_date = self.start_date.nil? ? nil : self.start_date + date_diff
    self.end_date = self.end_date.nil? ? nil : self.end_date + date_diff
  end
end