class Author < ApplicationRecord

  has_many :books, dependent: :destroy, inverse_of: :author

  validates :firstname, presence: true, length: { in: 1..35 }, uniqueness: { scope: :lastname, message: "Should be unique" }
  validates :lastname, presence: true, length: { in: 1..35 }, uniqueness: { scope: :firstname, message: "Should be unique" }

end