<ul class="plain">
            <% @user.federal_states.each do |p| %>
              <li>
                <%= p.name %>
              </li>
            <% end %>
          </ul>

<%= form_for(@user, :url => {:action => :add_state, :id => @user.id}) do |f| %>
  <%= select_tag('federal_state', options_for_select(@states)) %>
  <div class="from--submit">
  <%= link_to({ :action => 'index'}) do %>
      <i class="fa fa-times" aria-hidden="true"></i>
  <% end %>

    <button type="submit">
      <i class="fa fa-check" aria-hidden="true"></i>
    </button>
  </div>
<% end %>
