{% block titleextra %}{{ book.pretty_title }}{% endblock %}
{% block ogimage %}{% if book.cover %}{{ book.cover.url|build_absolute_uri:request }}{% endif %}{% endblock %}
{% block titleextra %}{{ book.pretty_title }}{% endblock %}
{% block ogimage %}{% if book.cover %}{{ book.cover.url|build_absolute_uri:request }}{% endif %}{% endblock %}