I’ve had some joy with Paper Trail. One thing I wanted in particular was to roll back changes based on time. So for example, a Post has many Comments, I want to rollback the Post to 1 day earlier and both revert any changes to the post and delete any comments that had been done subsequently. You could get the associated child objects and resave them something like

  post = Post.find(@version.item_id)
  reified_post = @version.reify(:has_many => true)
  new_comments = reified_post.comments.to_a
  post.comments = new_comments

I suppose the comments existed in the db, but were not associated to a post.

I know it’s my first submission so please forgive me. It’s a project that crosses many of the tags and categories and I wasn’t sure which tag to apply to it.

It’s a project I’ve been involved with for ten years from walking around with pen, paper and GPS until today when the United Nations and the White House themselves advocate for it - and its been growing and growing.

What most people who know about the project don’t know is that there is no employees of OpenStreetMap. The server team, the dev ops all are volunteers. The servers are all purchased from the community and this is the latest drive to get some new ones.

Cheers!