# frozen_string_literal: true

# == Schema Information
#
# Table name: topic_subscriptions
#
#  topic_id :integer          not null, primary key
#  user_id  :integer          not null
#
# Indexes
#
#  index_topic_subscriptions_on_topic_id_and_user_id  (topic_id,user_id) UNIQUE
#  index_topic_subscriptions_on_user_id               (user_id)
#
# Foreign Keys
#
#  fk_rails_...  (topic_id => topics.id) ON DELETE => cascade ON UPDATE => cascade
#  fk_rails_...  (user_id => users.id) ON DELETE => cascade ON UPDATE => cascade
#
class Topic::Subscription < ApplicationRecord
  self.primary_key = :topic_id

  belongs_to :topic
  belongs_to :user

  validates :user, uniqueness: { scope: [:topic_id] }
end