ActiveRecord transactions causing advanced patterns with nested associations in Rails 7
I recently switched to I'm experiencing issues when trying to create a record with nested associations within an ActiveRecord transaction. I have a `User` model that has many `Posts`, and each `Post` has many `Comments`. I'm using Rails 7 and trying to create a user along with their posts and comments in a single transaction. The question arises when the transaction fails due to validation errors on the `Post` model. Instead of rolling back everything, some of the `Comment` records are being persisted. Here’s the relevant code snippet: ```ruby ActiveRecord::Base.transaction do user = User.create!(name: 'Jane Doe') post = user.posts.create!(title: 'My first post') post.comments.create!(content: 'Great post!') # This should be rolled back too raise ActiveRecord::Rollback if post.errors.any? # I expect this to roll back all changes end ``` However, if I purposely raise an behavior after creating the `Comment`, like this: ```ruby raise 'Force rollback' ``` I see that the `Comment` is not rolled back, while the `User` and `Post` are. I checked my database and noticed that the comment is still there after the transaction block completes, which is not the behavior I expect. I’ve looked into the Rails 7 documentation and could not find a definitive explanation or any notes on this unexpected behavior. Am I missing something in my transaction handling or validations? Are there any best practices for managing nested records within transactions in Rails? I'm working on a CLI tool that needs to handle this. Thanks in advance! The stack includes Ruby and several other technologies. What's the correct way to implement this? This issue appeared after updating to Ruby LTS. Any pointers in the right direction?