grav-admin-first/user/plugins/admin/themes/grav/templates/partials/tools-logs.html.twig

<div class="logs-content">

    {% macro render_select(name, options, selected, autokey=false) %}
        <div class="forms-select-wrapper">
            <select class="form-select" name="{{ name }}"  data-grav-selectize>
                {% for key,option in options %}
                    {% if autokey %}
                        {% set key = key|of_type('int') ? option|lower : key %}
                    {% endif %}
                    <option value="{{ key }}" {{ key == selected ? ' selected' : '' }}>{{ option|titleize }}</option>
                {% endfor %}
            </select>
        </div>
    {% endmacro %}

    {% import _self as macro %}

        {% set file = grav.uri.query('log') ?: 'grav' %}
        {% set verbose = grav.uri.query('verbose') == 'true' ? true : false %}
        {% set lines = grav.uri.query('lines') ?: 20 %}
        {% set logfile = grav.locator.findResource("log://" ~ file ~ '.log') %}
        {% set logs = logviewer.objectTail(logfile, lines|int, false) %}

        <div class="logs-output">

        <form id="logs-form">
            <div class="block block-select">
                <div class="form-field">
                    <div class="form-data">
                        {% set log_files = config.plugins.admin.log_viewer_files|default(['grav','email']) %}
                        {% set lines_list = {10:'10 entries', 25:'25 entries', 50:'50 entries', 100:'100 entries', 200:'200 entries', 500:'500 entries'} %}

                        {{ macro.render_select('log', log_files, file, true) }}
                        {{ macro.render_select('verbose', {'false':'Essential Output', 'true':'Verbose Output'}, verbose) }}
                        {{ macro.render_select('lines', lines_list, lines) }}
                    </div>
                </div>
            </div>
        </form>

        <h1>{{ file|titleize }} Log File</h1>
        <h3>Display the {{ lines }} most recent entries...</h3>
        <table class="noflex">
            <thead>
                <tr>
                    <th class="date">Date</th>
                    <th class="level">Level</th>
                    <th class="message">Message</th>
                </tr>
            </thead>
            <tbody>
                {% for log in logs %}
                <tr>
                    <td class="date">{{ log.date|date }}</td>
                    <td class="level"><span class="badge {{ log.level|lower }}">{{ log.level }}</span></td>
                    <td class="message">{{ log.message }}</td>
                    {% if verbose %}
                </tr>
                <tr class="trace">
                    <td colspan="2">&nbsp;</td>
                    <td>
                        <div class="overflow">
                            <ol>
                            {% for tracerow in log.trace %}
                                <li><code>{{ tracerow }}</code></li>
                            {% endfor %}
                            </ol>
                        </div>
                    </td>
                    {% endif %}
                </tr>
                {% endfor %}
            </tbody>
        </table>
    </div>


</div>