How to add pop up window on Grid.php action link?

Question

I want to add popup link on Grid.php , i tried

      $this->addColumn('action', array(
            'header'    =>  Mage::helper('mymodule')->__('Action'),
            'width'     => '80',
            'type'      => 'action',
            'getter'    => 'getId',
            'actions'   => array(
                array(
                    'caption'   => Mage::helper('feedback')->__('Reply'),
                    'url'       => array('base'=> '*/*/edit'),
                    'field'     => 'id',
                    'onclick' =>"return popitup('".$this->getUrl('*/*/edit', array('id' => $this->getId()))."')"
                )
            ),
            'filter'    => false,
            'sortable'  => false,
            'index'     => 'stores',
            'is_system' => true,
    ));

I want both below link same

<a href="http://localhost/magento/index.php/feedback/adminhtml_mymodule/edit/id/4/key/220a1ff8d9526bd40f43e79502897d3f/" onclick="return popitup('http://localhost/magento/index.php/feedback/adminhtml_mymodule/edit/id/mymoduleGrid/key/220a1ff8d9526bd40f43e79502897d3f/')">Reply</a>

Answer 1

Try replacing:

'onclick' =>"return popitup('".$this->getUrl('*/*/edit', array('id' => $this->getId()))."')"

with

'target'    => '_blank'

Answer 2

Magento has an attribute for this already -> 'popup'.

Replace:

'onclick' =>"return popitup('".$this->getUrl('*/*/edit', array('id' => $this->getId()))."')"

With:

'popup' => true

For more information on this check out:

Mage_Adminhtml_Block_Widget_Grid_Column_Renderer_Action

In the method _transformActionData() it says:

case 'popup':
     $action['onclick'] =
          'popWin(this.href,\'_blank\',\'width=800,height=700,resizable=1,scrollbars=1\');return false;';
                break;