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 detail: https://github.com/ErwinM/acts_as_tenant

Gemfile

@@ -41,6 +41,9 @@ gem 'material_icons'
 gem 'font-awesome-rails', '~> 4.7', '>= 4.7.0.2'
 gem 'rack-cors'
 
+# Multi-tenancy for shops
+gem 'acts_as_tenant'
+
 # image upload
 gem 'carrierwave', '~> 1.0'
 gem 'mini_magick'