src/Table/RowTableView.php
public function getDataValue($header)
    {
        if (strpos($header, '.') !== false) {
            $fields = explode('.', $header);
            $value = $this->data;

            foreach ($fields as $campo) {
                if (isset($value->{$campo})) {
                    $value = $value->{$campo};
                } else {
                    $value = '';
                }
            }

            return $value;
        }

        return isset($this->data->{$header}) ? $this->data->{$header} : '';
    }
public function getDataValue($header)
    {
        if (strpos($header, '.') !== false) {
            $fields = explode('.', $header);
            $value = $this->data;

            foreach ($fields as $campo) {
                if (isset($value->{$campo})) {
                    $value = $value->{$campo};
                } else {
                    $value = '';
                }
            }

            return $value;
        }

        return isset($this->data->{$header}) ? $this->data->{$header} : '';
    }
@param $header

@return string