Example usage of new delegated_type facility

membership_product.rb

class MembershipProduct < ApplicationRecord
  include Sellable
  
  # Other stuff...
end

price.rb

class Price < ApplicationRecord
  belongs_to :product
  has_many :subscriptions
end

product.rb

# Schema: id, club_id, product_id, stripe_product_id, name, description, sellable_type, sellable_id
class Product < ApplicationRecord
  delegated_type :sellable, types: %w[membership_product squad_membership_product store_product]
  belongs_to :club
  has_many :prices
  has_many :subscriptions, through: :prices
  
  # Other stuff...
end

sellable.rb

module Sellable
  extend ActiveSupport::Concern
 
  included do
    has_one :product, as: :sellable, touch: true, dependent: :destroy
    accepts_nested_attributes_for :product
    
    has_many :prices, through: :product
  end
end

squad_membership_product.rb

class SquadMembershipProduct < ApplicationRecord
  include Sellable
  belongs_to :squad
  
  # Other stuff...
end

store_product.rb

class StoreProduct < ApplicationRecord
  include Sellable
  
  # Other stuff...
end