title: notices and errors on rails3
body: <p>I read somewhere that rails 3 form helper does not have error messages embedded in it anymore. I am wondering how I am supposed to show flash messages when I set them up inside my controller or as an inline notice in redirect_to? How am I supposed to display them on my view? Is there helper for this?</p>
  
  <p>For example if I have</p>
  
  <pre><code>def update
    if @person.save
      flash[:notice] = "Successfully saved!"
    end
  end
  </code></pre>
  
  <p>how do i show the notice on my view?</p>