Contao\Controller::getParentEntries PHP Method

    protected function getParentEntries($strTable, $intId)
    {
        // No parent table
        if (!isset($GLOBALS['TL_DCA'][$strTable]['config']['ptable'])) {
            return '';
        }
        $arrParent = array();
        do {
            // Get the pid
            $objParent = $this->Database->prepare("SELECT pid FROM " . $strTable . " WHERE id=?")->limit(1)->execute($intId);
            if ($objParent->numRows < 1) {
                break;
            }
            // Store the parent table information
            $strTable = $GLOBALS['TL_DCA'][$strTable]['config']['ptable'];
            $intId = $objParent->pid;
            // Add the log entry
            $arrParent[] = $strTable . '.id=' . $intId;
            // Load the data container of the parent table
            $this->loadDataContainer($strTable);
        } while ($intId && isset($GLOBALS['TL_DCA'][$strTable]['config']['ptable']));
        if (empty($arrParent)) {
            return '';
        }
        return ' (parent records: ' . implode(', ', $arrParent) . ')';
    }