class MultiGroupOrder < ApplicationRecord
  belongs_to :multi_order
  has_many :group_orders, dependent: :nullify

  after_destroy :delete_ordergroup_invoices

  def ordergroup_invoice
    #TODO: delete if deleted
    group_orders.joins(:ordergroup_invoice).first&.ordergroup_invoice
  end

  def ordergroup
    ordergroup_invoice&.ordergroup
  end

  private

  def delete_ordergroup_invoices
    ordergroup_invoice&.destroy
  end
end