Rails 7.1: implementing using custom scopes in polymorphic associations for filtering
After trying multiple solutions online, I still can't figure this out... I'm working on a Rails 7.1 application where I'm trying to filter polymorphic associations using custom scopes, but I'm running into unexpected issues. I have a `Comment` model that belongs to multiple models (polymorphic association) and I want to filter the comments based on the associated model type. For instance, when I attempt to retrieve comments only for a specific model type, I get an behavior that seems to indicate that the query is not correctly recognizing the type. Here's the relevant part of my `Comment` model: ```ruby class Comment < ApplicationRecord belongs_to :commentable, polymorphic: true scope :for_model_type, ->(model_type) { where(commentable_type: model_type) } end ``` And in my controller, I'm trying to use this scope like so: ```ruby class CommentsController < ApplicationController def index @comments = Comment.for_model_type('Post') end end ``` However, when I check the resulting SQL, it shows `WHERE comments.commentable_type = 'Post'` but still returns comments associated with other types. It's as if the scope is being ignored. I've also tried debugging using `.to_sql`, and the generated SQL indeed looks correct: ```sql SELECT "comments".* FROM "comments" WHERE "comments"."commentable_type" = 'Post' ``` I’ve verified that there are records in the `comments` table with the `commentable_type` set to 'Post'. Additionally, I've tried using `where` directly in the controller just to see if it makes a difference: ```ruby @comments = Comment.where(commentable_type: 'Post') ``` This still yields the same unexpected results. I'm not seeing any relevant logs that would indicate an scenario in Active Record. Could there be any configuration or caching layer that I’m missing that could affect this behavior? Any insights would be greatly appreciated! I'd really appreciate any guidance on this. This is part of a larger CLI tool I'm building. Thanks in advance!