在Rails 4中，您将如何记录和撤消特定于一个用户的所有数据库更改？

Question

I'm trying to set a specific user account as being "sandboxed", meaning I want to roll back any database changes that user makes when their session is destroyed.

I looked at using the Paper Trail gem, but I'm not sure it can be used to roll back changes specific to one user.

Is this possible?

Answer 1

One way to do it is to have an activities table where you log all activities by user. Then, when a sandboxed user is deleted, you can go through the activities of that user, delete the corresponding entities.

bundle g model Activity user:references thing:references{polymorphic}:index

And when session is destroyed:

current_user_activities = Activity.where(user_id: current_user.id)
current_user_activities.each do |activity|
  activity.thing.destroy!
end

current_user_activities.destroy_all