class Column < ApplicationRecord
  include Colored, Positioned

  belongs_to :account, default: -> { board.account }
  belongs_to :board, touch: true
  has_many :cards, dependent: :nullify

  after_save_commit    -> { cards.touch_all }, if: -> { saved_change_to_name? || saved_change_to_color? }
  after_create_commit  -> { sibling_columns.touch_all }
  after_destroy_commit -> { board.cards.touch_all; sibling_columns.touch_all }

  def sibling_columns
    board.columns.where.not(id:).sorted
  end
end