app/models/video_policy.rb

   1 class VideoPolicy < ActiveRecord::Base
   2   validates_presence_of :day
   3   validates_presence_of :fee
   4   validates_presence_of :period
   5   validates_presence_of :description
   6
   7   validates_numericality_of :day
   8   validates_numericality_of :fee
   9   validates_numericality_of :period
  10
  11   # Find the base fee for today
  12   def todays_fee
  13     # Gets the current day of the week in 0-6 == Sun-Sat form
  14     day_of_week = Time.now.to_date.wday
  15     return VideoPolicy.find_by_day(day_of_week).fee
  16   end
  17
  18   # Find the base rental period for today
  19   def todays_period
  20     # Gets the current day of the week in 0-6 == Sun-Sat form
  21     day_of_week = Time.now.to_date.wday
  22     return VideoPolicy.find_by_day(day_of_week).period
  23   end
  24
  25   # Find the fee for overdue videos (per day)
  26   def overdue_fee
  27     overdue_day = 7
  28     return VideoPolicy.find_by_day(overdue_day).fee
  29   end
  30
  31   protected
  32   def validate
  33     errors.add(:fee, "must be greater than $0.01") if fee < 0.01
  34   end
  35 end