Paranoia is a re-implementation of acts_as_paranoid for Rails 3, using much, much, much less code.
You would use either plugin / gem if you wished that when you called
destroy on an Active Record object that it didn't actually destroy it, but just "hid" the record. Paranoia does this by setting a
deleted_at field to the current time when you
destroy a record, and hides it by scoping all queries on your model to only include records which do not have a
Installation & Usage
Put this in your Gemfile:
Updating is as simple as
bundle update paranoia.
In your Gemfile:
In your config/environment.rb:
Run your migrations for the desired models
class AddDeletedAtToClient < ActiveRecord::Migration def self.up add_column :clients, :deleted_at, :datetime end def self.down remove_column :clients, :deleted_at end end
In your model:
class Client < ActiveRecord::Base acts_as_paranoid ... end
Hey presto, it's there!
If you want a method to be called on destroy, simply provide a before_destroy callback:
class Client < ActiveRecord::Base acts_as_paranoid before_destroy :some_method def some_method # do stuff end ... end
You can replace the older acts_as_paranoid methods as follows:
find_with_deleted(:all) # => unscoped find_with_deleted(:first) # => unscoped.first find_with_deleted(id) # => unscoped.find(id) find_only_deleted(:all) # => only_deleted find_only_deleted(:first) # => only_deleted.first find_only_deleted(id) # => only_deleted.find(id)
This gem is released under the MIT license.