hokui/hokui.net

# == Schema Information
#
# Table name: subjects
#
#  id         :integer          not null, primary key
#  title_ja   :string           not null
#  title_en   :string           not null
#  created_at :datetime
#  updated_at :datetime
#

class Subject < ActiveRecord::Base
  has_and_belongs_to_many :semesters
  has_many :documents

  validates(:title_ja) { presence; uniqueness }
  validates(:title_en) { presence; uniqueness; format(with: /\A[0-9a-z_]+\Z/) }
end