_form_errors.html.erb

<% if obj.errors.any? %>
  <div class="row form-errors">
    <div class="col-md-12">
      <section class="panel">
        <div class="panel-body">
          <div class="alert alert-warning alert-block fade in">
            <button data-dismiss="alert" class="close close-sm" type="button">
              <i class="fa fa-times"></i>
            </button>
            <h4>
              <i class="icon-ok-sign"></i>
              <%= t('.form_errors_heading') %>
            </h4>
            <p class="form-errors-subheading"><%= t('.form_errors_subheading') %></p>
            <ul>
              <% obj.errors.full_messages.each do |msg| %>
                <li><%= msg %></li>
              <% end %>
            </ul>
          </div>
        </div>
      </section>
    </div>
  </div>
<% end %>