public function get_view()
{
$dbc = CalendarPluginDB::get();
$calendars = new CalendarsModel($dbc);
$ret = '<form method="get" action="' . $_SERVER['PHP_SELF'] . '">
<input type="hidden" name="_method" value="delete" />
<div class="form-group">
<label>Delete Calendar</label>
<select name="id" class="form-control">
<option value="0">Choose one...</option>';
$ret .= $calendars->toOptions();
$ret .= '</select>
</div>
<div class="form-group">
<button type="submit" class="btn btn-danger">Delete</button>
</div>
</form>';
return $ret;
}