如何使用 Magento 中的观察者从产品网格中删除 MassAction？

Question

我想从产品网格中删除 "Delete" 批量操作。我正试图从我的观察者那里做到这一点。这是我的观察员class

class NameSpace_Module_Model_Observer {

public function isAddProductDeletePermitted($observer) {
    $block = $observer->getBlock();
    if( $block !== null ) {
        if( $block instanceof Mage_Adminhtml_Block_Cms_Block_Grid) {
            $block->getMassactionBlock()->removeItem('delete');
            // echo "DELETE";
        }
    }
    return $this;
}

这是我的 config.xml

<?xml version="1.0"?>
<config>

    . . .

    <global>

        . . .

        <events>
            <adminhtml_block_html_before>
                <observers>
                    <is_add_product_form_permitted>
                        <class>Dotlocal_AdvProductGrid_Model_Observer</class>
                        <method>isAddProductDeletePermitted</method>
                    </is_add_product_form_permitted>
                </observers>
            </adminhtml_block_html_before>
        </events>
    </global>
</config>

我似乎无法让它工作。我很确定这不起作用，因为我试图在添加之前将其删除。那我应该观察什么事件呢？

Answer 1

如我评论所述，您检查的类型有误。

两种可能的解决方案。

您获得了正确的网格，即 Mage_Adminhtml_Block_Catalog_Product_Grid 并且您的代码变为

class Some_Module_Model_Observer
{
    public function isAddProductDeletePermitted ( $observer )
    {
        $block = $observer->getBlock ();
        if ( $block !== null ) {
            if ( $block instanceof Mage_Adminhtml_Block_Catalog_Product_Grid ) {
                $block->getMassactionBlock()->removeItem('delete');
                // echo "DELETE";
            }
        }
        return $this;
    }

}

或者您也可以在每个管理网格上执行此操作（使用通用块 Mage_Adminhtml_Block_Widget_Grid），然后使用页面句柄验证您是否在产品列表页面上。

像这样：

class Some_Module_Model_Observer
{
    public function isAddProductDeletePermitted ( $observer )
    {
        $block = $observer->getBlock ();
        $layout_handle = Mage::app()->getLayout()->getUpdate()->getHandles();
        if ( $block !== null && $layout_handle[3] == 'adminhtml_catalog_product_index') {
            if ( $block instanceof Mage_Adminhtml_Block_Widget_Grid ) {
                $block->getMassactionBlock()->removeItem('delete');
                // echo "DELETE";
            }
        }
        return $this;
    }

}

Answer 2

因为 _prepareMassaction() 方法调度事件 adminhtml_catalog_product_grid_prepare_massaction 你应该可以做到

<events>
    <adminhtml_catalog_product_grid_prepare_massaction>
        <observers>
            <is_add_product_form_permitted>
                <class>Dotlocal_AdvProductGrid_Model_Observer</class>
                <method>isAddProductDeletePermitted</method>
            </is_add_product_form_permitted>
        </observers>
    </adminhtml_catalog_product_grid_prepare_massaction>
</events>

然后在你的观察者中

class Some_Module_Model_Observer
{
    public function isAddProductDeletePermitted ( $observer )
    {
        $block = $observer->getBlock ();

        if ($block) {
             $block->getMassactionBlock()->removeItem('delete');  
        }
        return $this;
    }

}

参见 app/code/core/Mage/Adminhtml/Block/Catalog/Product/Grid。php

Answer 3

class Adminhtml_Block_Sales_Order_Grid extends Mage_Adminhtml_Block_Sales_Order_Grid {

    /**
     * @return Mage_Adminhtml_Block_Sales_Order_Grid|Mage_Adminhtml_Block_Widget_Grid|void
     */
    public function _prepareMassaction()
    {
        parent::_prepareMassaction();

        $this->getMassactionBlock()->removeItem('cancel_order');
    }
}

如何使用 Magento 中的观察者从产品网格中删除 MassAction？

How do I remove a MassAction from the Product Grid using Observers in Magento?

php

events

magento