{% load wagtailadmin_tags %}
<td {% if column.classname %}class="{{ column.classname }}"{% endif %}>
    {% if value is None %}
        {% icon title=value|stringformat:'s' name="help" classname="default" %}
    {% elif value %}
        {% icon title=value|stringformat:'s' name="check" classname="default w-text-positive-100" %}
    {% else %}
        {% icon title=value|stringformat:'s' name="cross" classname="default w-text-text-error" %}
    {% endif %}
</td>