Mass action in Sales order grid

Question

How to add the new mass action in magento sales order grid to update my custom status.

Answer 1

your config.xml for event calling

<events>
            <core_block_abstract_prepare_layout_before>
                <observers>
                    <modulename>
                        <class>modulename/observer</class>
                        <method>addActions</method>
                    </modulename>
                </observers>
            </core_block_abstract_prepare_layout_before>
        </events>

your observer function

class Spacename_Moudlename_Model_Observer
{
    public function addActions($observer)
        {



         $block = $observer->getEvent()->getBlock();
                if(get_class($block) =='Mage_Adminhtml_Block_Widget_Grid_Massaction'
                    && $block->getRequest()->getControllerName() == 'sales_order')
                {


                    $block->addItem('--Your Label--', array(
                        'label' => '--Your Label--' ,
                        'url' => '',
                        'target'    => '_blank'
                    ));

              }

    }}