{% load i18n creme_widgets %}
{% with opportunity=summary.opportunity %}
<div class="card-info-field">
    <div class="card-info-field">
        <span class='card-info-key'>{% translate 'Linked Opportunity' %}</span>
        <span class='card-info-value'>
            {% if opportunity %}{% widget_entity_hyperlink opportunity user %}{% else %}—{% endif %}
        </span>
    </div>
</div>
{% endwith %}