Single database for multiple shops

Use ActsAsTenant as Multi-tenancy for shops

See below files:
- app/controllers/concern/multi_tenancy.rb
- app/models/application_record.rb
- app/models/shop.rb

An initializer can be created to control option in ActsAsTenant.
config/initializers/acts_as_tenant.rb
require 'acts_as_tenant/sidekiq'
ActsAsTenant.configure do |config|
  config.require_tenant = false # true
end

more details: https://github.com/ErwinM/acts_as_tenant

app/controllers/origami/table_invoices_controller.rb

@@ -1,7 +1,7 @@
 class Origami::TableInvoicesController < BaseOrigamiController
  	def index
     @table = DiningFacility.find(params[:table_id])
-    shop        =  Shop.first  
+    shop        =  Shop.current_shop  
     puts "table bookig lenght"
     @sale_array = Array.new
     @table.bookings.each do |booking|
@@ -34,7 +34,7 @@ class Origami::TableInvoicesController < BaseOrigamiController
     @table = DiningFacility.find(params[:table_id])
     @membership = MembershipSetting::MembershipSetting
     @payment_methods = PaymentMethodSetting.all
-    shop        =  Shop.first  
+    shop        =  Shop.current_shop  
     @sale_array = Array.new
     @table.bookings.each do |booking|
          if booking.sale_id.nil?