Rails 7.1: implementing ActiveRecord callbacks leading to unexpected state changes in associated records
I'm working with an scenario with ActiveRecord callbacks in my Rails 7.1 application, where I have a `User` model associated with a `Profile` model. The question arises when I try to update the user's attributes along with their profile's attributes in one go. I have set up a `before_save` callback in the `User` model to update the `Profile` if the user's name changes. Here is the code for the models: ```ruby class User < ApplicationRecord has_one :profile before_save :update_profile_if_name_changed def update_profile_if_name_changed return unless name_changed? profile.update(name: name) if profile end end class Profile < ApplicationRecord belongs_to :user end ``` In my controller, I have the following code to update both the user and the profile: ```ruby def update @user = User.find(params[:id]) if @user.update(user_params) redirect_to @user, notice: 'User was successfully updated.' else render :edit end end private def user_params params.require(:user).permit(:name, profile_attributes: [:id, :bio]) end ``` When I try to update the user's name and profile bio simultaneously, I see that the profile's name does not update as expected. Instead, I'm getting the following behavior in the logs: ``` ActiveRecord::RecordInvalid (Validation failed: Name need to be blank) ``` This is puzzling because when I inspect the profile after the update, it often appears to have lost its name attribute, which I never intended to change through the parameters. I've also verified that the `Profile` record does exist and is associated correctly with the `User`. I've tried wrapping the `profile.update` call in a transaction, but that didn't resolve the scenario. Is there something I'm overlooking in how ActiveRecord callbacks work in conjunction with nested attributes here? Any help would be greatly appreciated!