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