title: Devise Sign-up Errors
body: <p>I have my sign-up form on the home page of my Rails webapp and I was wondering how I could have the sign-up errors show up on that page instead of on the <code>/users/sign_up</code> page.  I tried moving the <code>devise_error_message!</code> block into my home page, but nothing shows up when the user is redirected to the home page after a failed sign-up.</p>
  
  <p>Since <code>devise_error_messages</code> renders the errors on the <code>/users/sign_up</code> page -- why do they not show up on the homepage when I call it there?</p>