engelsystem/templates/user_shifts.html

<form action="" type="get">
<fieldset id="filter"><legend>Filter</legend>
<input type="hidden" name="p" value="user_shifts">
%room_select%
%type_select%
%day_select%
%filled_select%
<input type="submit" style="width: 100%;" value="Filtern">
</fieldset>
</form>

<table>
    <thead>
        <tr>
            <th>
                Zeit
            </th>
            <th>
                Einträge
            </th>
        </tr>
    </thead>
    <tbody>
        %shifts_table%
    </tbody>
</table>