ActsAsCheckpoint
================
 
This plugin provides a very simple syntax for setting up complex permissions.
 
Example for Controllers
=======================
 
Role-oriented approach:
 
  class YourController < ApplicationController
  	acts_as_checkpoint :get_user_method => :current_user
  	controller_allows :administrator, :to => [ :index, :show, :destroy ]
  	controller_allows :registered_user, :to => [ :index, :show, :new, :edit, :create, :update ]
  	controller_allows :anonymous_user, :to => [ :index, :show ]
  end
 
Action-oriented approach:
 
  class YourController < ApplicationController
  	acts_as_checkpoint :get_user_method => :current_user
  	controller_allows :index  , :by => [ :administrator, :registered_user, :anonymous_user ]
  	controller_allows :show   , :by => [ :administrator, :registered_user ]
  	controller_allows :new    , :by => :registered_user
  	controller_allows :edit   , :by => :registered_user
  	controller_allows :create , :by => :registered_user
  	controller_allows :update , :by => :registered_user
  	controller_allows :destroy, :by => :administrator
  end
 
The two approaches may be interspersed at will... just try not to get confused.
 
Example for Models
==================
 
  class Dog < ActiveRecord::Base
  	belongs_to :owner
 
  	acts_as_checkpoint
  	model_may :eat, :drink, :lick
  	model_allows :lick, :by => :self
  	model_allows :pet, :by => :owner
  end
 
  class Human < ActiveRecord::Base
  	has_many :dogs
 
  	acts_as_checkpoint
  	model_may :pet
  	model_allows :lick, :by => :dogs
  end
 
  human = Human.new
  dog = Dog.new( :owner => human )
 
  human.can_pet?( dog )
  # => true
  dog.can_eat?( human )
  # => false
  dog.can_lick?( human )
  # => true
 
Copyright (c) 2008 Brian Langenfeld, released under the MIT license