app/bundles/DashboardBundle/Resources/views/Widget/form.html.twig

{{ form_start(form) }}
    <div class="row form-group">
        <div class="col-xs-6">
            {{ form_label(form.name) }}
            {{ form_widget(form.name) }}
            <div class="has-error">{{ form_errors(form.name) }}</div>
        </div>
        <div class="col-xs-6">
            {{ form_label(form.type) }}
            {{ form_widget(form.type) }}
            <div class="has-error">{{ form_errors(form.type) }}</div>
        </div>
    </div>
    <div class="row form-group">
        <div class="col-xs-6">
            {{ form_label(form.width) }}
            {{ form_widget(form.width) }}
        </div>
        <div class="col-xs-6">
            {{ form_label(form.height) }}
            {{ form_widget(form.height) }}
        </div>
    </div>
    {{ form_row(form.buttons) }}
{{ form_end(form) }}