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/uploaders/commissioner_image_uploader.rb

@@ -20,11 +20,11 @@ class CommissionerImageUploader < CarrierWave::Uploader::Base
   end
 
   def filename
-    if Shop.first.shop_code.nil?
-      "#{original_filename}" if original_filename.present? 
+    if Shop.current_shop.shop_code.nil?
+      "#{original_filename}" if original_filename.present?
     else
-      "#{Shop.first.shop_code}_#{original_filename}" if original_filename.present? 
-    end    
+      "#{Shop.current_shop.shop_code}_#{original_filename}" if original_filename.present?
+    end
   end
 
   # def cache_dir
@@ -62,6 +62,6 @@ class CommissionerImageUploader < CarrierWave::Uploader::Base
   # Avoid using model.id or version_name here, see uploader/store.rb for details.
   # def filename
   #   "something.jpg" if original_filename
-  # end	
+  # end
 
-end
+end

app/uploaders/customer_image_uploader.rb

@@ -20,11 +20,11 @@ class CustomerImageUploader < CarrierWave::Uploader::Base
   end
 
   def filename
-    if Shop.first.shop_code.nil?
-      "#{original_filename}" if original_filename.present? 
+    if Shop.current_shop.shop_code.nil?
+      "#{original_filename}" if original_filename.present?
     else
-      "#{Shop.first.shop_code}_#{original_filename}" if original_filename.present? 
-    end    
+      "#{Shop.current_shop.shop_code}_#{original_filename}" if original_filename.present?
+    end
   end
 
   # def cache_dir
@@ -62,6 +62,6 @@ class CustomerImageUploader < CarrierWave::Uploader::Base
   # Avoid using model.id or version_name here, see uploader/store.rb for details.
   # def filename
   #   "something.jpg" if original_filename
-  # end	
+  # end
 
-end
+end

app/uploaders/employee_image_uploader.rb

@@ -20,11 +20,11 @@ class EmployeeImageUploader < CarrierWave::Uploader::Base
   end
 
   def filename
-    if Shop.first.shop_code.nil?
-      "#{original_filename}" if original_filename.present? 
+    if Shop.current_shop.shop_code.nil?
+      "#{original_filename}" if original_filename.present?
     else
-      "#{Shop.first.shop_code}_#{original_filename}" if original_filename.present? 
-    end    
+      "#{Shop.current_shop.shop_code}_#{original_filename}" if original_filename.present?
+    end
   end
 
   # def cache_dir
@@ -62,6 +62,6 @@ class EmployeeImageUploader < CarrierWave::Uploader::Base
   # Avoid using model.id or version_name here, see uploader/store.rb for details.
   # def filename
   #   "something.jpg" if original_filename
-  # end	
+  # end
 
-end
+end

app/uploaders/menu_item_image_uploader.rb

@@ -15,16 +15,16 @@ class MenuItemImageUploader < CarrierWave::Uploader::Base
   # Override the directory where uploaded files will be stored.
   # This is a sensible default for uploaders that are meant to be mounted:
   def store_dir
-    "image/menu_images/#{Shop.first.shop_code}"
+    "image/menu_images/#{Shop.current_shop.shop_code}"
     # "uploads/#{model.class.to_s.underscore}/#{mounted_as}/#{model.id}"
   end
 
   def filename
-    if Shop.first.shop_code.nil?
-      "#{original_filename}" if original_filename.present? 
+    if Shop.current_shop.shop_code.nil?
+      "#{original_filename}" if original_filename.present?
     else
-      "#{Shop.first.shop_code}_#{original_filename}" if original_filename.present? 
-    end    
+      "#{Shop.current_shop.shop_code}_#{original_filename}" if original_filename.present?
+    end
   end
 
   # def cache_dir
@@ -42,7 +42,7 @@ class MenuItemImageUploader < CarrierWave::Uploader::Base
   # Process files as they are uploaded:
   # process scale: [200, 300]
   process :resize_to_fit => [400, 250]#[200, 150]
-  
+
   #
   # def scale(width, height)
   #   # do something

app/uploaders/product_image_uploader.rb

@@ -20,11 +20,11 @@ class ProductImageUploader < CarrierWave::Uploader::Base
   end
 
   def filename
-    if Shop.first.shop_code.nil?
-      "#{original_filename}" if original_filename.present? 
+    if Shop.current_shop.shop_code.nil?
+      "#{original_filename}" if original_filename.present?
     else
-      "#{Shop.first.shop_code}_#{original_filename}" if original_filename.present? 
-    end    
+      "#{Shop.current_shop.shop_code}_#{original_filename}" if original_filename.present?
+    end
   end
 
   # def cache_dir

app/uploaders/shop_image_uploader.rb

@@ -20,11 +20,11 @@ class ShopImageUploader < CarrierWave::Uploader::Base
   end
 
   def filename
-    if Shop.first.shop_code.nil?
-      "#{original_filename}" if original_filename.present? 
+    if Shop.current_shop.shop_code.nil?
+      "#{original_filename}" if original_filename.present?
     else
-      "#{Shop.first.shop_code}_#{original_filename}" if original_filename.present? 
-    end    
+      "#{Shop.current_shop.shop_code}_#{original_filename}" if original_filename.present?
+    end
   end
 
   # def cache_dir
@@ -62,6 +62,6 @@ class ShopImageUploader < CarrierWave::Uploader::Base
   # Avoid using model.id or version_name here, see uploader/store.rb for details.
   # def filename
   #   "something.jpg" if original_filename
-  # end	
+  # end
 
-end
+end