(fix) api/products/index bug when sorting by amount

CHANGELOG.md

@@ -8,6 +8,7 @@
 - improvement: add including_deleted_users param for open api users
 - decreases sidekiq concurrency from 25 to 5, 25 is too much and consumes memory for nothing
 - do not log Notifications#polling action anymore, by default, can be enable via env variable ENABLE_NOTIFICATIONS_POLLING_LOGGING=true
+- Fix a bug: api/products/index bug when sorting by amount
 
 ## v6.2.0 2023 October 13
 

app/services/product_service.rb

@@ -173,7 +173,7 @@ class ProductService
       order ||= 'desc'
 
       if key == 'amount'
-        products.order("COALESCE(amount, 0) #{order.upcase}")
+        products.order(Arel.sql("COALESCE(amount, 0) #{order.upcase}"))
       else
         products.order(key => order)
       end