 }}" id="{{ 'custom_column_' ~ c.id }}"
              {% if book['custom_column_' ~ c.id]|length > 0 %}
                value="{% for column in book['custom_column_' ~ c.id] %} {{ '%s [%s]' % (book['custom_column_' ~ c.id][0].value, book['custom_column_' ~ c.id][0].extra|formatfloat(2)) }}{% if not loop.last %}, {% endif %}{% endfor %}"
              {% endif %}>
            {% endif %}

            {% if c.datatype == 'datetime' %}
              <div class="input-group">
                <input type="text" 