app/controllers/users_controller.rb

     1class UsersController < ApplicationController
     2  # render new.rhtml
     3  def new
     4  end
     5
     6  def create
     7    cookies.delete :auth_token
     8    # protects against session fixation attacks, wreaks havoc with 
     9    # request forgery protection.
    10    # uncomment at your own risk
    11    # reset_session
    12    @user = User.new(params[:user])
    13    @user.save
    14    if @user.errors.empty?
    15      self.current_user = @user
    16      redirect_back_or_default('/')
    17      flash[:notice] = "Thanks for signing up!"
    18    else
    19      render :action => 'new'
    20    end
    21  end
    22
    23end