📅  最后修改于: 2023-12-03 15:03:31.695000             🧑  作者: Mango
Paranoia Gem is a Ruby gem that allows you to easily implement soft deletion in your ActiveRecord models. When you delete a record, it doesn't actually delete the record from the database. It sets a deleted_at
timestamp on the record instead. This way, you can easily retrieve deleted records or restore them at a later time.
To install the Paranoia gem, add it to your Gemfile:
gem 'paranoia'
Then, run bundle install
.
To use the Paranoia gem, simply add acts_as_paranoid
to your ActiveRecord model:
class Post < ActiveRecord::Base
acts_as_paranoid
end
Once you've done this, if you delete a Post
record, it won't actually be deleted from the database. Instead, it will set the deleted_at
timestamp on the record.
To retrieve deleted Post
records, you can use the with_deleted
method:
Post.with_deleted.find(1)
This will return the Post
record with the given id
, including deleted records.
If you want to restore a deleted Post
record, you can use the restore
method:
deleted_post.restore
This will restore the deleted Post
record and set the deleted_at
timestamp to nil
.
The Paranoia gem is a powerful tool for implementing soft deletion in your Rails application. With just a few lines of code, you can easily retrieve deleted records and restore them at a later time. Give it a try in your app today!