delete-----magento后台数据信息删除----------

在grid里面实现这个方法：

 protected function _prepareMassaction()

    {

        $this->setMassactionIdField('post_id');

        $this->getMassactionBlock()->setFormFieldName('blog');

        $this->getMassactionBlock()->addItem('delete', array(

             'label'    => Mage::helper('gao')->__('Delete'),

             'url'      => $this->getUrl('*/*/massDelete'),

             'confirm'  => Mage::helper('gao')->__('Are you sure?')

        ));

        $statuses = Mage::getSingleton('blog/status')->getOptionArray();

        array_unshift($statuses, array('label'=>'', 'value'=>''));

        $this->getMassactionBlock()->addItem('status', array(

             'label'=> Mage::helper('blog')->__('Change status'),

             'url'  => $this->getUrl('*/*/massStatus', array('_current'=>true)),

             'additional' => array(

                    'visibility' => array(

                         'name' => 'status',

                         'type' => 'select',

                         'class' => 'required-entry',

                         'label' => Mage::helper('blog')->__('Status'),

                         'values' => $statuses

                     )

             )

        ));

        return $this;

    }