Consul 0.10.0 allows multiple power mappings for nested resources

Consul Show archive.org snapshot 0.10.0 now allows multiple power mappings for nested resources.

---

When using nested resources Show archive.org snapshot you probably want two power
checks and method mappings: One for the parent resource, another for the child resource.

Say you have the following routes:

resources :clients do
  resources :notes
end

And the following power definitions:

class Power
  ...

  power :clients do
    Client.active if signed_in?
  end

  power :client_notes do |client|
    client.notes.where(:state => 'published')
  end

end

You can now check and map both powers in the nested NotesController:

class NotesController < ApplicationController

  power :clients, :as => :client_scope
  power :client_notes, :context => :load_client, :as => :note_scope

  def show
    load_note
  end

  private

  def load_client
    @client ||= client_scope.find(params[:client_id])
  end

  def load_note
    @note ||= note_scope.find(params[:id])
  end

end

Note how we provide the Client parameter for the :client_notes power by using the :context => :load_client
option in the power directive.