| class Comment < ActiveRecord::Base | |
| validates :author_id, :post_id, :body, presence: true | |
| belongs_to :author, | |
| class_name: :User, | |
| primary_key: :id, | |
| foreign_key: :author_id | |
| belongs_to :post, | |
| class_name: :Post, | |
| primary_key: :id, | |
| foreign_key: :post_id | |
| end | |