CancanNamespace

Namespace for cancan gem.

Install

gem 'cancan_namespace'

Usage

class Ability
include CanCanNamespace::Ability

def initialize(user, context = nil)
  @context = context
  
  ...
  
  if user.admin?
    can :manage, :all
    can :manage, :all, :context => :manage
  end
end
end

Controller

Manage::BaseController < ApplicationController
protected

  def current_ability
    @current_ability ||= ::Ability.new(current_user, :manage)
  end
end

In this case context extracted from controller name (:manage):

class Manage::PostsController < Manage::BaseController
before_filter :find_post, :only => [:edit, :update, :destroy]
authorize_resource
...
end

Set context for controller directly:

class People::RelationshipsController < Account::BaseController
before_filter :find_followed
before_filter :build_relation, :only => [:create]
before_filter :find_relationship, :only => [:destroy]

authorize_resource :relationship, :context => :account

...

end

View

<% if can? :edit, post %>
<%= link_to 'Edit', edit_post_path(post) %>
<% end %>

<% if can? :edit, post, :context => :manage %>
<%= link_to 'Edit (admin)', edit_manage_post_path(post) %>
<% end %>