Install

Gemfile

gem 'locked', git => '[email protected]:BlueLemon/Lockable.git'

Model

Model < ActiveRecord::Base
  acts_as_locked(:foo, :bar)
end

Migration

class AddLockedToPerson < ActiveRecord::Migration
  def change
    add_column :model, :locked_at, :datetime
  end
end

Example of usage

In the Person model add

class Person < ActiveRecord::Base
  # name:string
  # age:integer
  acts_as_locked(:name)
end

In rails console

p = Person.new
p.name = "Oldani Pablo"
p.lock
p.save # true
p.name = "Eloy Espinaco"
p.save # false

p = Person.new
p.name = "Oldani Pablo"
p.lock
p.save # true
p.age = "30"
p.save # true