👀 Views: 0 💬 Answers: 1 📅 Created: 2025-06-16

ruby rails activerecord eagerloading Ruby

I'm working on a project and hit a roadblock. I'm relatively new to this, so bear with me. I've tried everything I can think of but I've been struggling with this for a few days now and could really use some help. I'm facing an issue while trying to eager load associated records using `includes` in Rails 6.1. I have a `Post` model that has many `Comments`, and I want to load both posts and their comments to avoid N+1 queries. However, I'm getting unexpected results when trying to filter the posts based on a condition on comments. Here's the relevant code snippet: ```ruby class Post < ApplicationRecord has_many :comments end class Comment < ApplicationRecord belongs_to :post end # Attempting to load posts with comments where comments are not flagged as spam posts = Post.includes(:comments).where(comments: { spam: false }) ``` The intention is to get all posts along with their non-spam comments. However, when I run this query, I notice that it returns posts even when they have spam comments, and those spam comments seem to be included in the results as well. I expected only posts with non-spam comments to be returned. I've tried various combinations using `joins` and `includes`, but the behavior remains the same. It seems like the `where` condition is not effectively filtering the posts according to the comments. Is there a specific way to structure my query or an alternative approach I should consider? Additionally, when I check the SQL generated by ActiveRecord, it looks like this: ```sql SELECT "posts".* FROM "posts" LEFT OUTER JOIN "comments" ON "comments".post_id = "posts".id WHERE "comments".spam = false ``` This query seems to be fetching all posts, even those with spam comments. Any insights into why this is happening and how I can achieve the desired filtering would be greatly appreciated! For context: I'm using Ruby on macOS. Is there a better approach? What's the best practice here? I'm working with Ruby in a Docker container on Windows 11. I'd love to hear your thoughts on this. This is for a application running on CentOS. What are your experiences with this?