Mismatch in ActiveRecord callbacks on nested attributes with dependent: :destroy
I'm dealing with I'm trying to debug Quick question that's been bugging me - I'm dealing with I'm experiencing an scenario in my Rails 7.1 application where nested attributes for a model with `dependent: :destroy` do not trigger the expected callbacks. I have a `Post` model that has_many `Comments`, and I'm trying to delete comments when a post is destroyed. Here’s the relevant part of my models: ```ruby class Post < ApplicationRecord has_many :comments, dependent: :destroy accepts_nested_attributes_for :comments, allow_destroy: true end class Comment < ApplicationRecord belongs_to :post before_destroy :log_deletion private def log_deletion Rails.logger.info "Comment #{id} is being deleted" end end ``` In my controller, I’m using strong parameters to permit nested attributes: ```ruby class PostsController < ApplicationController def create @post = Post.new(post_params) if @post.save redirect_to @post else render :new end end private def post_params params.require(:post).permit(:title, :body, comments_attributes: [:id, :content, :_destroy]) end end ``` When I create a post with a comment and then delete the comment using the nested attributes via a form, the `before_destroy` callback in the `Comment` model does not seem to trigger. I receive the following behavior in my logs: ``` Started POST "/posts" for 127.0.0.1 at 2023-10-01 12:00:00 +0000 Comment nil is being deleted ``` I have confirmed that the comment is being marked for destruction (i.e., the `_destroy` flag is set to `1`). However, the callback is not executing as expected. I've tried moving the `log_deletion` method outside of the private scope, but that did not help. Can anyone explain why the callback is not being executed, or suggest a way to debug this further? What am I missing in the configuration or implementation? The stack includes Ruby and several other technologies. Thanks for any help you can provide! This is happening in both development and production on Windows 11. Is there a better approach? For context: I'm using Ruby on Windows 10. Any suggestions would be helpful.