bought_detail.rb

class BoughtDetail < ActiveRecord::Base
    belongs_to :entry_type
    belongs_to :person
    before_save :set_bought_data, :set_end_on, :set_start_on

    attr_accessor :credit_card, :card_code, :days

    def set_bought_data
        self.bought_data = Date.today
    end

    def set_start_on
      self.start_on = bought_data if start_on.nil?
    end

    def set_end_on
        days = "7" if days.nil?
        self.end_on = Date.today + days.to_i
    end
end