gistfile1.rb

class NotesController < ApplicationController
  def index 
    load_notes
  end
  
  def show 
    load_note
  end
  
  def new 
    build_note
  end
  
  def create
    build_note
    save_note or render 'new'
  end
  
  def edit 
    load_note 
    build_note
  end
  
  def update
    load_note
    build_note
    save_note or render 'edit'
  end
  
  def destroy
    load_note 
    @note.destroy 
    redirect_to notes_path
  end

  private
  
  def load_notes
    @notes ||= note_scope.to_a
  end
  
  def load_note
    @note ||= note_scope.find(params[:id])
  end
  
  def build_note
    @note ||= note_scope.build @note.attributes = note_params
  end
  
  def save_note 
    if @note.save
      redirect_to @note 
    end
  end
  
  def note_params
    note_params = params[:note]
    note_params ? note_params.permit(:title, :text, :published) : {}
  end
  
  def note_scope 
    Note.scoped
  end 
end