I've been able to filter custom added column like 'seller name ' its get from seller id of product.

other filters are working.

$this->addColumn('seller_id', array(
        'header' => Mage::helper('marketplace')->__('Seller Names'),            
        'index' => 'seller_id',
        'filter'    => true, 
        'sortable'  => true,            
       // 'renderer'  => 'marketplace/adminhtml_productrequest_renderer_sellername'

when I try to use the column to search I get an error like this.

exception 'Mage_Core_Exception' with message 'Invalid block type: 1' in C:\wamp\www\magento\app\Mage.php:595 Stack trace: C:\wamp\www\magento\app\code\core\Mage\Core\Model\Layout.php(495): Mage::throwException('Invalid block t...') 1 C:\wamp\www\magento\app\code\core\Mage\Core\Model\Layout.php(437): Mage_Core_Model_Layout->_getBlockInstance(true, Array) 2 C:\wamp\www\magento\app\code\core\Mage\Adminhtml\Block\Widget\Grid\Column.php(369): Mage_Core_Model_Layout->createBlock(true) 3 C:\wamp\www\magento\app\code\core\Mage\Adminhtml\Block\Widget\Grid\Column.php(51): Mage_Adminhtml_Block_Widget_Grid_Column->getFilter() 4 C:\wamp\www\magento\app\code\core\Mage\Adminhtml\Block\Widget\Grid.php(314): Mage_Adminhtml_Block_Widget_Grid_Column->setGrid(Object(Mage_Adminhtml_Block_Sales_Order_Create_Search_Grid)) 5 C:\wamp\www\magento\app\code\local\Mage\Adminhtml\Block\Sales\Order\Create\Search\Grid.php(157): Mage_Adminhtml_Block_Widget_Grid->addColumn('seller_id', Array) 6 C:\wamp\www\magento\app\code\core\Mage\Adminhtml\Block\Widget\Grid.php(624):

1 Answer 1


Suppose,your Marketplace module name is Abc_Marketplace.

As per as magento,there should be a class exit in your module

Abc_Marketplace_Block_Adminhtml_Productrequest_Renderer_Sellername Which may be does not exit in your system that reason it show error.

May class name is wrong or may path location is wrong.for those reason you got error.

As per your comment,your block type prefix is mp.

      <mp><!-- this called as block type prefix  for Abc_Markeplace module -->

So render class block type is

'renderer' => 'mp/adminhtml_productrequest_renderer_sellername'

  • Abc_Marketplace_Block_Adminhtml_Productrequest_Renderer_Sellername is there in Adminhtml based on this class only I'm getting seller name. Sep 29, 2015 at 11:35
  • Changed 'renderer' => 'abc_marketplace/adminhtml_productrequest_renderer_sellername' showing fatal error Fatal error: Call to a member function setColumn() on a non-object. ../Adminhtml\Block\Widget\Grid\Column.php but when i've been changed 'filter' => true, to false there is no error. Sep 29, 2015 at 12:10
  • can you please show your marketplace config.xml code
    – Amit Bera
    Sep 29, 2015 at 12:15
  • this not config.xml code.. i asking about your marketplace etc/config.xml fi;r
    – Amit Bera
    Sep 29, 2015 at 12:24
  • its big file which part you need to change Sep 29, 2015 at 12:27

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