sti

old

Ride coordination board: Singe Table Inheritance

Database: ads
  :title
  :price
  :content
  :username
  :from
  :to

Model: regular AD
  :title
  :price
  :content
  :username

Model: Ride AD
  :title
  :price
  :content
  :username
  ---
  :from
  :to

###############################################

  class Ad < ActiveRecord::Base
  validates_presence_of :name, :email, :price, :category_id
  validates_presence_of :title, :ad_content, if: is_regular?
  validates_presence_of :from, :to, unless: is_regular?

  def is_regular?
    self.type.nil?
  end

  end

  class RideAd < Ad

  end