Generate Board on Initialize

board.rb

class Board < ActiveRecord::Base
  belongs_to :game

  # After initialize we generate new tiles and store them in the objects tiles accessor 
  # When this model is retrieved through ActiveRecord the tiles are not generated and we get the
  # tile set that was saved in the database.
  after_initialize :place_tiles

  def place_tiles
    # The tiles hash is stored in a text field, Rails handles this
    self.tiles = generate_tiles
  end

  ...

end