class Track < ActiveRecord::Base include PropositionAccepting belongs_to :conference has_many :events validates :name, presence: true validates :color, presence: true, format: {with: /\A#?[a-f0-9]{6}\z/i} validates :description, presence: true translates :name, :description def color=(hex_triplet) write_attribute :color, hex_triplet.gsub(/\A#/,'') if hex_triplet end def color "##{read_attribute :color}" end end