class Exhibit < ActiveRecord::Base

  acts_as_list

  has_many :images, :through => :image_associations
  has_many :image_associations, :as => :associable, :dependent => :destroy
  has_many :calendar_items, :as => :calendarable, :dependent => :destroy
  belongs_to :created_by, :class_name => "User", :foreign_key => "created_by"
  belongs_to :updated_by, :class_name => "User", :foreign_key => "updated_by"

  def begin_date_string
    self.begin_date ? self.begin_date.to_s(:standard) : Time.now.to_s(:standard)
  end

  def begin_date_string=(date)
    self.begin_date = Date.parse(date)
  end

  def end_date_string
    self.end_date ? self.end_date.to_s(:standard) : Time.now.to_s(:standard)
  end

  def end_date_string=(date)
    self.end_date = Date.parse(date)
  end

  def image_attributes=(attributes)
    if image = Image.create(attributes)
      self.image_associations.create(:image => image)
    end
  end

  def calendar_item_attributes=(attributes)
    calendar_item = self.calendar_items.build
    calendar_item.update_attributes(attributes)
  end

end