class Artist < ApplicationRecord
  has_one :board, as: :boardable, dependent: :destroy

  after_create -> (artist) { BoardGenerator.create(artist) }
  after_update -> (artist) { BoardGenerator.update(artist) }
end

class Album < ApplicationRecord
  has_one :board, as: :boardable, dependent: :destroy

  after_create -> (album) { BoardGenerator.create(album) }
  after_update -> (album) { BoardGenerator.update(album) }
end

class Board < ApplicationRecord
  belongs_to :boardable, polymorphic: true, optional: true
end

class BoardGenerator
  def self.create(boardable)
    boardable.board = Board.create(name: boardable.name)
  end

  def self.update(boardable)
    boardable.board.update_attribute(:name, boardable.name)
  end
end