### This does not work:
## _from.html.erb
<% form_for @cvcat do |f| %>
  <%= f.error_messages %>
  <p>
    <%= f.label :category %><br />
    <%= f.text_field :category %>
  </p>
  <p>
  <% f.fields_for :vitaes do |entry_form| %>
  <%= render :partial => 'entry_form' %>
  <% end %>
  </p>
  <p><%= f.submit "Submit" %></p>
<% end %>
## _entry_form.html.erb
<div class="entry">
  <p>
  <%= entry_form.label :entry %>
  <%= entry_form.text_field :entry %>
  </p>

</div>

###This works:
## _form.html.erb
<% form_for @cvcat do |f| %>
  <%= f.error_messages %>
  <p>
    <%= f.label :category %><br />
    <%= f.text_field :category %>
  </p>
  <p>
  <% f.fields_for :vitaes do |entry_form| %>
  <div class="entry">
    <p>
    <%= entry_form.label :entry %>
    <%= entry_form.text_field :entry %>
    </p>

  </div>
    <% end %>
  </p>
  <p><%= f.submit "Submit" %></p>
<% end %>