title: Rails: No 'field_with_errors' when using 'fields_for'
body: <p>So, I have this nested 'organization' model in my 'user' model.
  The user model is a devise based model and the organization belongs_to user.</p>
  
  <p>I created a form for it, and everything works fine.
  Even the 'devise_error_messages!' output everything correctly.</p>
  
  <p>Only problems are localization and the field_with_errors-div..</p>
  
  <p>I managed to get localization right by doing this in my locale file:</p>
  
  <pre><code>nl:
    activerecord:
      attributes:
        user:
          contact:
            account_number: "bankrekening nummer"
  </code></pre>
  
  <p>Of course I just want it to work without 'contact' being in the 'user' list.</p>
  
  <p>But the serious problem I'm having here is the 'field_with_errors' div witch is normally wrapped around the fields with errors.. I use it to create red colored labels on fields with errors.. They work for the user class, but they won't work for the nested forms..</p>
  
  <p>Google isn't helping anything, like no one is having this issue except for me..</p>
  
  <p>Is this even possible? </p>
  
  <p>If it is, can you point me in the right direction of doing this?</p>
  
  <p>Thanks!</p>