{{ form_start(search_form, {'attr': {'class': 'ui small form'}}) }}
<div class="ui action input">
	{{ form_widget(search_form.search, {'attr': {'placeholder': 'Suche...'}}) }}
	{{ form_widget(search_form.submit, {'attr': {'class': 'ui updoon submit button'}}) }}
</div>
{{ form_end(search_form) }}