{% with _is_blank_row = (is_blank_row or order_items is not defined or order_items is none or is_blank_row is not defined) %}
    {% if not _is_blank_row %}
        {% set str_items = order_items.to_preview_str() %}
        <div 
            class="{{ model.FLAG_ITEMS }}" 
            {{ model.ATTR_VALUE_CURRENT }}="{{ json_str_items }}" 
            {{ model.ATTR_VALUE_PREVIOUS }}="{{ json_str_items }}"
        >{{ str_items }}</div>
    {% else %}
        <div class="{{ model.FLAG_ITEMS }}" {{ model.ATTR_VALUE_CURRENT }} {{ model.ATTR_VALUE_PREVIOUS }}></div>
    {% endif %}
{% endwith %}