Magento Articles and Tips for Developers

 
<?php
...
 
        $this->addColumn('action',
            array(
                'header' => Mage::helper('promolink')->__('Action'),
                'width' => '50px',
                'type' => 'action',
                'getter' => 'getId',
                'actions' => array(
                    array(
                        'caption' => Mage::helper('promolink')->__('Delete'),
                        'url' => array('base' => '*/*/delete'),
                        'field' => 'id'
                    )
                ),
                'filter' => false,
                'renderer'  => 'Vendorname_Modulename_Block_Adminhtml_Template_Grid_Renderer_Youraction',
                'sortable' => false,
                'index' => 'id',
                'is_system' => true,
        ));
..

 
<?php
 
class Vendorname_Modulename_Block_Adminhtml_Template_Grid_Renderer_Youraction extends Mage_Adminhtml_Block_Widget_Grid_Column_Renderer_Action
{
    public function render(Varien_Object $row)
    {
	$value = $row->getData('id');
        if($value == $row->getData('id')) {
            return '<a href="'.$this->getUrl('adminhtml/promolink_index/delete',array('id'=>$row->getData('id'))).'">Delete</a>';
            }
        else {
            return false;
        }
    }