class SessionsController < ApplicationController def new end def create user = User.authenticate(params[:login], params[:password]) if user session[:user_id] = user.id redirect_to_target_or_default root_url, :notice => "Logged in successfully." else flash.now[:alert] = "Invalid login or password." render :action => 'new' end end def destroy session[:user_id] = nil redirect_to root_url, :notice => "You have been logged out." end end