firefly-iii/resources/views/reports/partials/category-period.twig

<table class="table table-hover sortable table-condensed">
    <thead>
    <tr>
        <th data-defaultsign="az" colspan="2">{{ 'category'|_ }}</th>
        {% for period in periods %}
            <th data-defaultsign="_19">{{ period }}</th>
        {% endfor %}
        <th data-defaultsign="_19">{{ 'sum'|_ }}</th>
    </tr>
    </thead>
    <tbody>
    {% for id, info in report %}
        <tr>
            <td>
                <a class="btn btn-default btn-xs" href="{{ route('categories.show', [id]) }}"><i class="fa fa-external-link" aria-hidden="true"></i></a>
            </td>
            <td data-value="{{ info.name }}">
                <a title="{{ info.name }}" href="#" data-category="{{ id }}" class="category-chart-activate">{{ info.name }}</a>
            </td>
            {% for key, period in periods %}
                {# income first #}
                {% if(info.entries[key]) %}
                    <td data-value="{{ info.entries[key] }}">
                        {{ info.entries[key]|formatAmount }}
                    </td>
                {% else %}
                    <td data-value="0">
                        {{ 0|formatAmount }}
                    </td>
                {% endif %}
            {% endfor %}

            {# if sum of income, display: #}
            {% if info.sum %}
                <td data-value="{{ info.sum }}">
                    {{ info.sum|formatAmount }}
                </td>
            {% else %}
                <td data-value="0">
                    {{ 0|formatAmount }}
                </td>
            {% endif %}
        </tr>
    {% endfor %}
    </tbody>
</table>