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/credit_payments_controller.rb

@@ -9,7 +9,7 @@ class Origami::CreditPaymentsController < BaseOrigamiController
     @creditcount = 0
     others = 0
 
-    @shop        = Shop.first 
+    @shop        = Shop.current_shop 
     if @shop.is_rounding_adj
          new_total    = Sale.get_rounding_adjustment(sale_data.grand_total)
     else
@@ -32,7 +32,7 @@ class Origami::CreditPaymentsController < BaseOrigamiController
     sale_id = params[:sale_id]
     if(Sale.exists?(sale_id))
       saleObj = Sale.find(sale_id)
-      shop_details =  Shop.first 
+      shop_details =  Shop.current_shop 
       
       # rounding adjustment
       # if shop_details.is_rounding_adj