public function generateAjax($id, $strField, $level)
{
if (!\Environment::get('isAjaxRequest')) {
return '';
}
$this->strField = $strField;
$this->loadDataContainer($this->strTable);
// Load current values
switch ($GLOBALS['TL_DCA'][$this->strTable]['config']['dataContainer']) {
case 'File':
if (\Config::get($this->strField) != '') {
$this->varValue = \Config::get($this->strField);
}
break;
case 'Table':
if (!$this->Database->fieldExists($this->strField, $this->strTable)) {
break;
}
$objField = $this->Database->prepare("SELECT " . $this->strField . " FROM " . $this->strTable . " WHERE id=?")->limit(1)->execute($this->strId);
if ($objField->numRows) {
$this->varValue = \StringUtil::deserialize($objField->{$this->strField});
}
break;
}
$this->getPathNodes();
// Load the requested nodes
$tree = '';
$level = $level * 20;
$objPage = $this->Database->prepare("SELECT id FROM tl_page WHERE pid=? ORDER BY sorting")->execute($id);
while ($objPage->next()) {
$tree .= $this->renderPagetree($objPage->id, $level);
}
return $tree;
}