moviewyrm/bookwyrm/templates/snippets/block_button.html

{% if not user in request.user.blocks.all %}
<form name="blocks" method="post" action="/block/{{ user.id }}">
    {% csrf_token %}
    <button class="button is-danger is-light is-small {{ class }}" type="submit">Block</button>
</form>
{% else %}
<form name="unblocks" method="post" action="/unblock/{{ user.id }}">
    {% csrf_token %}
    <button class="button is-small {{ class }}" type="submit">Un-block</button>
</form>
{% endif %}