app/views/admin/notas/_form.html.erb
<%= semantic_form_for nota, :url => url || admin_notas_path do |f| %>
<%= f.inputs 'Detalles generales' do %>
<%= f.input :numero %>
<%= f.input :autor %>
<% if f.object.new_record? %>
<%= f.semantic_fields_for :pases do |pase| %>
<%= render partial: 'admin/pases/form_inputs', locals: { pase: pase }%>
<% end %>
<% end %>
<%= f.input :tags_tokens,
:input_html => {
"data-pre" => f.object.tags.to_json(:methods => :name), :only => [:id, :name] } %>
<% end %>
<%= f.actions %>
<% end %>