Because my grid has a problem when join table, so I used renderer to show data like this

'brand' => array(
            'header' => Mage::helper('advr')->__('Brand'),
            'column_css_class' => 'nobr',
            'renderer' => 'Mirasvit_Advr_Block_Adminhtml_Renderer_Brand',


class Vendor_Module_Block_Adminhtml_Renderer_Brand extends 
public function render(Varien_Object $row)

    $order = Mage::getModel('sales/order')->loadByIncrementId($row->getIncrementId());
    $items = $order->getAllVisibleItems();
    $brand = array();
    foreach ($items as $i){
        $productId = $i->getProductId();
        $product = Mage::getModel('catalog/product')->load($productId);
        $brand[] = $product->getAttributeText('brand');
    return implode(',', $brand);

public function renderExport(Varien_Object $row) {
    return $this->render($row);

but it can not get this column in csv file. Anyone know how to fix it? Help me please, thanks

  • add index to brand column – Rahul Singh Jan 21 at 9:26
  • I tried, but not work. – Thanh TN Jan 21 at 10:14
  • can you add code of _prepareCollection() – Rahul Singh Jan 21 at 10:44
  • thank you. I found a solution to fix it in export function, now it can get data of this column in csv file – Thanh TN Jan 21 at 10:51
  • that's great... – Rahul Singh Jan 21 at 10:52

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