## SeasonCollection

class SeasonCollection < ActiveRecord::Base
	belongs_to :season
	belongs_to :collection
	validates_uniqueness_of :collection_id, :scope => [:season_id]

end

## Season

class Season < ActiveRecord::Base
	has_many :season_collections
	has_many :collections, :through => :season_collections, :dependent => :destroy

	def self.find_season(query)
		find_by_title(query)
	end

	validates_presence_of :title, :description, :image
	validates_format_of :image,
                            :with => %r{\.(gif|jpg|png)$}i,
                            :message => 'must be a URL for GIF, JPG, or PNG image.'
end

## Collection

class Collection < ActiveRecord::Base
	has_many :products
	has_many :season_collections
	has_many :seasons, :through => :season_collections, :dependent => :destroy

	def self.find_cards
		find(:all)
	end

	validates_presence_of :title, :description, :image
	validates_numericality_of :price
	validate :price_must_be_at_least_a_penny
	validates_format_of :image,
			    :with => %r{\.(gif|jpg|png)$}i,
			    :message => 'must be a URL for GIF, JPG, or PNG image.'

	protected
		def price_must_be_at_least_a_penny
			errors.add(:price, 'should be at least 0.01') if price.nil? || price < 0.01
		end
end