<%= form_for(@unit, remote: true, html: { class: "form-horizontal" }) do |f| %>

<%= f.label :unit, { class: "col-md-2 control-label" } do %> Nombre * <% end %>

<%= f.text_field :unit, { class: "form-control" } %>

<%= f.submit 'Guardar', { class: "btn green" } %>

<% end %>