Crazy Pills

group_order_member.rb

# == Schema Information
#
# Table name: group_order_members
#
#  id                          :integer          not null, primary key
#  name                        :string
#  email                       :string

class GroupOrderMember < ApplicationRecord
  include Accounting::Interfaces::Invoiceable
end

invoice.rb

# == Schema Information
#
# Table name: accounting_ledger_items
#
#  id               :integer          not null, primary key
#  sender_type      :string
#  sender_id        :integer
#  recipient_type   :string
#  recipient_id     :integer
#  type             :string
#  issue_date       :datetime
#  currency         :string(3)        not null
#  total_amount     :decimal(20, 4)
#  tax_amount       :decimal(20, 4)
#  status           :string(20)       not null
#  identifier       :string(50)
#  description      :string
#  period_start     :datetime
#  period_end       :datetime
#  uuid             :uuid
#  due_date         :datetime
#  created_at       :datetime         not null
#  updated_at       :datetime         not null
#  invoiceable_type :string
#  invoiceable_id   :integer
#  xero_id          :uuid
#

class Accounting::Invoice < Accounting::LedgerItem

  belongs_to :invoiceable, polymorphic: true

end

invoiceable.rb

module Accounting
  module Interfaces
    module Invoiceable
      extend ActiveSupport::Concern
      
       included do 
         has_one :invoice, class_name: 'Accounting::Invoice', as: :invoiceable
       end
      
    end
  end
end

test.rb

[3] pry(main)> GroupOrderMember.last.invoice
  GroupOrderMember Load (0.7ms)  SELECT  "group_order_members".* FROM "group_order_members" WHERE "group_order_members"."deleted_at" IS NULL ORDER BY "group_order_members"."id" DESC LIMIT 1
  Accounting::Invoice Load (0.6ms)  SELECT  "accounting_ledger_items".* FROM "accounting_ledger_items" WHERE "accounting_ledger_items"."type" IN ('Accounting::Invoice') AND 1=0 AND 1=0 LIMIT 1
=> nil
[4] pry(main)> Accounting::Invoice.last.invoiceable
  Accounting::Invoice Load (0.6ms)  SELECT  "accounting_ledger_items".* FROM "accounting_ledger_items" WHERE "accounting_ledger_items"."type" IN ('Accounting::Invoice') ORDER BY "accounting_ledger_items"."id" DESC LIMIT 1
  Accounting::LineItem Load (0.5ms)  SELECT "accounting_line_items".* FROM "accounting_line_items" WHERE "accounting_line_items"."ledger_item_id" = 10
  GroupOrderMember Load (0.6ms)  SELECT  "group_order_members".* FROM "group_order_members" WHERE "group_order_members"."deleted_at" IS NULL AND "group_order_members"."id" = 6 LIMIT 1
=> #<GroupOrderMember:0x00007ffaa6468dd8
 id: 6,
 name: "asdf asdf",
 user_id: nil,
 order_id: 219,
 created_at: Sat, 14 Dec 2019 17:53:14 UTC +00:00,
 updated_at: Sat, 14 Dec 2019 17:53:21 UTC +00:00,
 email: "asf@asdf.com",
 legacy_phone_number: nil,
 deleted_at: nil,
 department: "test",
 stripe_charge_token: nil,
 stripe_charge_id: nil,
 terms_accepted_at: nil,
 notify_by_email_on_delivery: false,
 notify_by_sms_on_delivery: false,
 notification_preferences: {"sms_reminder"=>nil, "email_reminder"=>nil, "sms_on_delivery"=>nil, "email_on_delivery"=>nil, "sms_reminder_one_hour"=>nil, "email_reminder_one_hour"=>nil},
 phone_number: nil,
 number_of_people: nil,
 custom_fields: {}>
[5] pry(main)>