gistfile1.rb

class UsersController < ApplicationController
before_filter :current_user
  before_filter :find_user, :only => [:edit, :update, :destroy, :show]
  def show
  end

  def new
  	@user = User.new
  end

  def create
  	@user = User.new(params[:user])

  	if @user.save
  		redirect_to users_path, :notice => 'Your preferences has been saved'
  	else
  		redirect_to users_path, :error => 'An error has occurred'
  	end
  end

  def edit

  end

  def update

  	if @user.update_attributes(params[:user])
  		redirect_to users_path, :notice => 'The users preferences has been updated'
  	else
  		redirect_to users_path, :notice => 'Sorry, the update was unsuccesful'
  	end
  end

  def destroy


  	if @user.destroy
  		redirect_to users_path, :notice => 'The requested account has been removed'
  	end
  end
private
   def find_user
     @user = User.find(params[:id])
    end
    def current_user
       @current_user = User.find(session[:user_id])
end
end

What an amazing gist.