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/movetable_controller.rb

@@ -105,7 +105,7 @@ class Origami::MovetableController < BaseOrigamiController
     #   @type          = (DiningFacility.find(change_to)).type
     #   @moved_by      = @current_user.name
     #   @date          = DateTime.now
-    #   @shop          = Shop.first
+    #   @shop          = Shop.current_shop
     #   unique_code    = "MoveTablePdf" 
     #   pdf_no        = PrintSetting.where(:unique_code => unique_code).count
     #   #print_settings = PrintSetting.find_by_unique_code(unique_code)