private function _render()
{
if (!empty($this->_tree)) {
return true;
}
$filter = $this->master->getProperty('data')->order($this->date_field);
if (is_null($view =& $this->master->startDataView($filter))) {
return false;
}
$rows =& $view->getProperty('rows');
if (empty($rows)) {
$this->_tree = array();
$this->master->endView();
return true;
}
$tree =& $this->_tree;
foreach ($rows as $id => &$row) {
$action = str_replace('-id-', $id, $this->action);
$row['url'] = TIP::buildActionUriFromTag($action, (string) $this->master);
$row['title'] = $this->_renderField($this->title_field, $row);
// Suppose the date is in SQL format
$date = $row[$this->date_field];
list($y, $m, $day) = sscanf($date, "%d-%d-%d");
// Compute the year
$year = sprintf('%04d', $y);
if (!array_key_exists($year, $tree)) {
$tree[$year] = array('title' => $year, 'url' => TIP::modifyActionUri(null, null, null, array($this->id => $year)), 'sub' => array(), 'ITEMS' => 0);
isset($this->count_field) && ($tree[$year]['COUNT'] = 0);
}
++$tree[$year]['ITEMS'];
isset($this->count_field) && ($tree[$year]['COUNT'] += $row[$this->count_field]);
// Compute the month
$months =& $tree[$year]['sub'];
$month = strftime('%B', mktime(0, 0, 0, $m, $day, $year));
$month_id = $year . sprintf('%02d', $m);
if (!array_key_exists($month_id, $months)) {
$months[$month_id] = array('title' => $month, 'url' => TIP::modifyActionUri(null, null, null, array($this->id => $month_id)), 'sub' => array(), 'ITEMS' => 0);
isset($this->count_field) && ($months[$month_id]['COUNT'] = 0);
}
++$months[$month_id]['ITEMS'];
isset($this->count_field) && ($months[$month_id]['COUNT'] += $row[$this->count_field]);
$months[$month_id]['sub'][$id] =& $row;
isset($this->count_field) && ($row['COUNT'] = $row[$this->count_field]);
}
return true;
}
