Rails 7.1: implementing STI model and polymorphic associations optimization guide as expected
I tried several approaches but none seem to work. I'm working with a perplexing scenario with Single Table Inheritance (STI) and polymorphic associations in my Rails 7.1 application. I have a `Vehicle` model that inherits from a `Car` and `Truck`, both of which are supposed to have polymorphic associations with a `Service` model. The `Service` model should be able to associate with either type of vehicle. However, when I try to access the services for a specific `Car`, I get an behavior indicating that the polymorphic association is not being recognized. Here's how I have set up my models: ```ruby class Vehicle < ApplicationRecord has_many :services, as: :serviceable end class Car < Vehicle end class Truck < Vehicle end class Service < ApplicationRecord belongs_to :serviceable, polymorphic: true end ``` In my `vehicles` table, I've set the `type` column to handle the STI, and in the `services` table, I have `serviceable_id` and `serviceable_type` columns. When I run the following code to get services related to a specific `Car` instance: ```ruby car = Car.find(1) car.services ``` It throws the behavior: `ActiveRecord::StatementInvalid: PG::UndefinedTable: behavior: relation "services" does not exist`. I've confirmed that the `services` table already exists in the database. I've also double-checked that the associations are set up correctly and that the migrations were run successfully without any errors. To troubleshoot, I've tried using raw SQL queries to manually check if the services linked to the vehicle are correctly stored in the database, and they are. What could be causing this scenario? I've also looked into potential caching issues, but the question continues across server restarts. Any insights or guidance on how to resolve this would be greatly appreciated! I'm working on a service that needs to handle this. Any help would be greatly appreciated!