class="datepicker form-control" name="{{ 'custom_column_' ~ c.id }}" id="{{ 'custom_column_' ~ c.id }}"
                  {% if book['custom_column_' ~ c.id]|length > 0 %}
                    value="{% if book['custom_column_' ~ c.id][0].value  %}{{ book['custom_column_' ~ c.id][0].value|formatdateinput}}{% endif %}"
                  {% endif %}>
                <input type="text" class="fake_custom_column_{{ c.id }} form-control fake-input hidden" id="fake_pubdate_{{ c.id }}"
                  {% if book[