GridHandler::_renderCellInternally PHP Méthode

    private function _renderCellInternally($request, $row, $column)
    {
        // If there is no object, then we want to return an empty row.
        // override the assigned GridCellProvider and provide the default.
        $element =& $row->getData();
        if (is_null($element) && $row->getIsModified()) {
            import('lib.pkp.classes.controllers.grid.GridCellProvider');
            $cellProvider = new GridCellProvider();
            return $cellProvider->render($request, $row, $column);
        }
        // Otherwise, get the cell content.
        // If row defines a cell provider, use it.
        $cellProvider = $row->getCellProvider();
        if (!is_a($cellProvider, 'GridCellProvider')) {
            // Remove reference to the row variable.
            unset($cellProvider);
            // Get cell provider from column.
            $cellProvider = $column->getCellProvider();
        }
        return $cellProvider->render($request, $row, $column);
    }