TbJsonDataColumn.php

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<?php
Yii::import('booster.widgets.TbJsonGridColumn');

class TbJsonDataColumn extends TbJsonGridColumn
{
        public function renderDataCell($row)
        {
                if ($this->grid->json) {
                        $data = $this->grid->dataProvider->data[$row];
                        $options = $this->htmlOptions;
                        if ($this->cssClassExpression !== null) {
                                $class = $this->evaluateExpression($this->cssClassExpression, array('row' => $row, 'data' => $data));
                                if (isset($options['class'])) {
                                        $options['class'] .= ' ' . $class;
                                } else {
                                        $options['class'] = $class;
                                }
                        }
                        $col = array();
                        $col['attrs'] = CHtml::renderAttributes($options);
                        $col['content'] = $this->renderDataCellContent($row, $data);
                        return $col;
                }
                parent::renderDataCell($row);
        }

        public function renderDataCellContent($row, $data)
        {
                if ($this->grid->json) {
                        if ($this->value !== null) {
                                $value = $this->evaluateExpression($this->value, array('data' => $data, 'row' => $row));
                        } elseif ($this->name !== null) {
                                $value = CHtml::value($data, $this->name);
                        }
                        $value = !isset($value)
                                ? $this->grid->nullDisplay
                                : $this->grid->getFormatter()->format(
                                        $value,
                                        $this->type
                                );

                        return $value;
                }
                parent::renderDataCellContent($row, $data);
        }
}