def follow_all_url(parser, token):
    """
    Renders the URL to follow an object as both actor and target

    ::

        <a href="{% follow_all_url other_user %}">
            {% if request.user|is_following:other_user %}
                stop following
            {% else %}
                follow
            {% endif %}
        </a>

        <a href="{% follow_all_url other_user 'watching' %}">
            {% is_following user group "watching" as is_watching %}
            {% if is_watching %}
                stop watching
            {% else %}
                watch
            {% endif %}
        </a>
    """
    bits = token.split_contents()
    if len(bits) > 3:
        raise TemplateSyntaxError(
            "Accepted format {% follow_all_url [instance] %} or {% follow_url [instance] [flag] %}"
        )
    elif len(bits) == 2:
        return DisplayActivityFollowUrl(bits[1], actor_only=False)
    else:
        flag = bits[2][1:-1]
        return DisplayActivityFollowUrl(bits[1], actor_only=False, flag=flag)
Renders the URL to follow an object as both actor and target

    ::

        <a href="{% follow_all_url other_user %}">
            {% if request.user|is_following:other_user %}
                stop following
            {% else %}
                follow
            {% endif %}
        </a>

        <a href="{% follow_all_url other_user 'watching' %}">
            {% is_following user group "watching" as is_watching %}
            {% if is_watching %}
                stop watching
            {% else %}
                watch
            {% endif %}
        </a>