acts_as_versioned

Adds simple versioning to an ActiveRecord module. ActiveRecord is required.

Resources

Install

• gem install mo_acts_as_versioned

GitHub

• https://github.com/MushroomObserver/acts_as_versioned

Behaviors worth knowing

• Destroying the host does not cascade to versions. Versions are preserved as an audit trail with their FK still pointing at the deleted parent. To get cascade-delete, pass association_options: { dependent: :delete_all } to acts_as_versioned. To clear the FK on destroy, pass :nullify.
• belongs_to :user is auto-wired on the version class when the versioned table has a user_id column. Calls like version.user just work; no need to hand-define the association on every host model. The wiring is idempotent — if you've already defined belongs_to :user (via :extend or directly), the gem skips. Eager-load with parent.versions.includes(:user) to avoid N+1.
• The versions cache stays in sync after a save. When a new version is created, it's appended to the parent's loaded versions association (only if already loaded — no unwanted lazy loads or strict_loading violations). This prevents the stale-read bug where parent.versions.last would return the old top-of-collection right after a save.

Special thanks to Dreamer on ##rubyonrails for help in early testing. His ServerSideWiki (http://serversidewiki.com) was the first project to use acts_as_versioned in the wild.

Copyright (c) 2005 Rick Olson, 2018 Mushroom Observer, Inc.

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

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