# frozen_string_literal: true

# == Schema Information
#
# Table name: post_taggings
#
#  post_id :bigint           not null, primary key
#  tag_id  :bigint           not null, primary key
#
# Indexes
#
#  index_post_taggings_on_post_id_and_tag_id  (post_id,tag_id) UNIQUE
#  index_post_taggings_on_tag_id              (tag_id)
#
# Foreign Keys
#
#  fk_rails_...  (post_id => posts.id)
#  fk_rails_...  (tag_id => tags.id) ON DELETE => cascade ON UPDATE => cascade
#
class Post::Tagging < ApplicationRecord
  self.primary_keys = :post_id, :tag_id

  belongs_to :post
  belongs_to :tag

  validates :tag, uniqueness: { scope: [:post_id] }
end