agenda-libre-ruby/app/controllers/notes_controller.rb

class NotesController < InheritedResources::Base
  belongs_to :moderation

  def create
    create! do |format|
      format.html {
        @note.author = current_user
        create!(notice: t(:added, scope: [:notes, :actions])) { moderations_url }
      }
    end
  end

  private
    def begin_of_association_chain
      @moderation = Event.unscoped.find params[:moderation_id]
      @event = @moderation
    end

    def permitted_params
      params.permit note: [:contents]
    end
end