tbtotalsumcolumn

<?php
/**
 * TbTotalSumColumn widget class
 *
 * @author: antonio ramirez <antonio@clevertech.biz>
 * @copyright Copyright &copy; Clevertech 2012-
 * @license http://www.opensource.org/licenses/bsd-license.php New BSD License
 * @package YiiBooster bootstrap.widgets
 */
Yii::import('bootstrap.widgets.TbDataColumn');

class TbTotalSumColumn extends TbDataColumn
{
    public $totalExpression;

    public $totalValue;

    protected $total;

    public function init()
    {
        parent::init();

        if (!is_null($this->totalExpression))
        {
            $this->total = is_numeric($this->totalExpression) ? $this->totalExpression : $this->evaluateExpression($this->totalExpression);
        }
        $this->footer = true;
    }

    protected function renderDataCellContent($row, $data)
    {
        ob_start();
        parent::renderDataCellContent($row, $data);
        $value = ob_get_clean();

        if(is_numeric($value))
        {
            $this->total += $value;
        }
        echo $value;
    }

    protected function renderFooterCellContent()
    {
        if(is_null($this->total))
            return parent::renderFooterCellContent();

        echo $this->totalValue? $this->evaluateExpression($this->totalValue, array('total'=>$this->total)) : $this->grid->getFormatter()->format($this->total, $this->type);
    }
}