Voltex

This engine aims to provide an easy way to work with dynamic permissions.

Installation

1. Add Voltex to your Gemfile.

gem 'voltex'

2. Generate voltex initializer.

rails g voltex:install

3. Update initializer according your needs.

Voltex.setup do |config|
  # Voltex classes configuration.
  # config.user_class = 'User'
  # config.role_class = 'Role'
  # config.permission_class = 'Permission'
  ...
end

4. Generate voltex resources.

rails g voltex:resources

5. Migrate your database.

rails db:migrate

6. Create default permissions.

rake voltex

7. Load current user permissions in your application controller.

class ApplicationController < ActionController::Base
  ...
  before_action :set_current_permissions
end

By default this callback preloads permissions for current_user if this is defined. If you need that this callback preloads permission for another user just overwrite voltex_user method.

Example:

class ApplicationController < ActionController::Base
  ...
  def voltex_user
    # Default is current_user.
    another_awesome_user
  end
end

Using Voltex with Pundit

Include voltex in your application policy.

require 'voltex/pundit'

class ApplicationPolicy
  include Voltex::Pundit
end

Now a new helper is available in your policies.

class PostPolicy
  def index?
    permission?(Post, :index)
  end
end

Using Voltex with CanCan

Include voltex in your ability class.

require 'voltex/cancan'

class Ability
  include CanCan::Ability
  include Voltex::CanCan

  def initialize(user)
    define_voltex_abilities(user)
  end
end

Including and Excluding permissions

Update your voltex initializer:

Voltex.setup do |config|
  # Voltex classes configuration.
  # config.user_class = 'User'
  # config.role_class = 'Role'
  # config.permission_class = 'Permission'
  #
  # Excluding default permissions.
  config.exclude = [
    { resource: 'Payment', action: 'destroy' },
    { resource: 'Post', action: 'update' },
  ]
  #
  # Including other permissions.
  config.include = [
    { resource: 'User', action: 'enable' },
    { resource: 'User', action: 'disable' },
  ]
end

And run voltex rake task again:

rake voltex

Defining role permissions

Mount voltex engine in your application:

Rails.application.routes.draw do
  mount Voltex::Engine => '/voltex'
end

Run voltex views generator:

rails g voltex:views

This will define a route /voltex/roles/:id/edit where permissions can be defined for each role.