Controller

links_controller.rb

class LinksController < ApplicationController

  before_filter :authenticate, :only => [:edit, :update, :destroy]

  def up
    @link = Link.find(params[:id])
	@link.update_attribute :points, @link.points + 1
	redirect_to :action => :index 
  end
  
  def down 
    @link = Link.find(params[:id])
	@link.update_attribute :points, @link.points - 1
	redirect_to :action => :index 
  end 
  
  def index
    @links = Link.all
  end
  
  def show 
    @link = Link.find(params[:id])
	redirect_to @link.url
  end

  def new
	@link = Link.new
  end
  
  def create
    @link = Link.new(params[:link]) 
	if @link.save
	  flash[:notice] = "The link was successfully added"
	  redirect_to :action => :index
	else 
	  redirect_to :action => :new
	end
  end 

  def edit
    @link = Link.find(params[:id])
  end
  
  def update 
    @link = Link.find(params[:id])
	if 
	  @link.update_attributes(params[:link])
	  redirect_to :action => :index
	else 
	  redirect_to :action => :edit
	end
  end
  
  def destroy 
    @link = Link.find(params[:id])
	@link.destroy
	redirect_to :action => :index
  end 
  
  protected 
  def authenticate
    authenticate_or_request_with_http_basic do |user, password|
	  user == "x4556d4s" && password == "fd55sas64x"
	end 
  end 
end