takahe/templates/activities/_like.html

{% if post.pk in interactions.like %}
    <a title="Unlike" class="active" hx-post="{{ post.urls.action_unlike }}" hx-swap="outerHTML">
        <i class="fa-solid fa-star"></i>
    </a>
{% else %}
    <a title="Like" hx-post="{{ post.urls.action_like }}" hx-swap="outerHTML">
        <i class="fa-solid fa-star"></i>
    </a>
{% endif %}