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Unexpected 'ActiveRecord::RecordNotFound' When Using Find with Nested Attributes in Rails 7

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ruby rails activerecord Ruby

I'm converting an old project and I'm running into an scenario where I'm getting an `ActiveRecord::RecordNotFound` behavior when attempting to find records that use nested attributes in my Rails 7 application. I have a `Project` model that accepts nested attributes for `Task` models. Here's how my models are set up: ```ruby class Project < ApplicationRecord has_many :tasks accepts_nested_attributes_for :tasks end class Task < ApplicationRecord belongs_to :project end ``` In my controller, I’m trying to find a project by its ID and then access its tasks like this: ```ruby def show @project = Project.find(params[:id]) @tasks = @project.tasks end ``` When I access `/projects/1`, I sometimes get the following behavior: ``` ActiveRecord::RecordNotFound in ProjectsController#show Couldn't find Project with 'id'=1 ``` I've double-checked that there is indeed a project with that ID in the database. My routes are set up correctly, and the view seems to be rendering the right URLs. Additionally, I have a before_action filter to set the project, but I tried moving it around and that didn't help. Here’s the before_action I’m using: ```ruby before_action :set_project, only: [:show] private def set_project @project = Project.find(params[:id]) end ``` The strange part is that this behavior only occurs intermittently. Sometimes it works perfectly, and other times it doesn't. I’ve also enabled logging and noticed that the SQL query is indeed hitting the right tables, but the behavior indicates that the record couldn't be found, which is confusing. Could this scenario be related to race conditions or perhaps caching? I've tried using `find_by(id: params[:id])` as well, but it results in `nil` when the behavior occurs. Any insights on what might be causing this behavior would be greatly appreciated! For context: I'm using Ruby on macOS. How would you solve this?