module LoveMonster
  class Love < ActiveRecord::Base
    default_scope { order('created_at DESC') }

    belongs_to :person_to, :class_name => Person, :foreign_key => "to_user_id"
    belongs_to :person_from, :class_name => Person, :foreign_key => "from_user_id"

    has_many :likes

    validates :from_user_id, :to_user_id, :reason, :presence => true
    validate :ensure_to_and_from_are_distinct

    def ensure_to_and_from_are_distinct
      errors.add(:to_user_id, "You love yourself enough already. Go love someone else!") if from_user_id == to_user_id
    end
  end
end