simple_versioning for ActiveRecord

Simple versioning is a plain vanilla versioning support. It simply tracks all your attributes in a polymorphically associated model.

Installation

In the Gemfile:

gem 'simple_versioning'

Next, generate a simple migration, call it anything you like, the content needs to be (I'll add a generator in a couple of days):

def self.up
  create_table :versions do |t|
    t.belongs_to :versioned, :polymorphic => true
    t.text    :yaml
    t.integer :number
    t.timestamps
  end

  change_table :versions do |t|
    t.index [:versioned_id, :versioned_type]
    t.index :number
    t.index :created_at
  end
end

def self.down
  drop_table :versions
end

Example

To version an ActiveRecord model, simply add track to your class like so:

class User < ActiveRecord::Base
  track

  validates_presence_of :first_name, :last_name

  def name
    "#{first_name} #{last_name}"
  end
end

Thats it!

>> u = User.create(:first_name => "Yukihiro", :last_name => "Matsumoto")
=> #<User first_name: "Yukihiro", last_name: "Matsumoto">
>> u.version_number
=> 1
>> u.update_attribute(:last_name, "Matz")
=> true
>> u.name
=> "Yukihiro Matz"
>> u.version_number
=> 2
>> u.revert_to(1)
=> 1
>> u.name
=> "Yukihiro Matsumoto"
>> u.version_number
=> 1
>> u.save
=> true
>> u.version_number
=> 3
>> u.update_attribute(:last_name, "Matsumoto II")
=> true
>> u.name
=> "Yukihiro Matsumoto II"
>> u.version_number
=> 4

What is coming in 0.0.2

Save without versioning
Mutator methods

Thanks!

Thanks to laserlemon and his vestal_versions gem!

simple_versioning

Runtime

simple_versioning for ActiveRecord

Installation

Example

What is coming in 0.0.2

Thanks!