class Conference < ActiveRecord::Base
	mount_uploader :cover, CoverUploader
	mount_uploader :poster, PosterUploader

	belongs_to :conference_type

	has_many :conference_host_organizations, :dependent => :destroy
	has_many :organizations, :through => :conference_host_organizations
	
	has_many :conference_registration_form_fields, :order => 'position ASC', :dependent => :destroy#, :class_name => '::ConferenceRegistrationFormField'
	has_many :registration_form_fields, :through => :conference_registration_form_fields

	accepts_nested_attributes_for :conference_host_organizations, :reject_if => proc {|u| u[:organization_id].blank?}, :allow_destroy => true

	def to_param
		slug
	end

end