php - Magento 2.2 观察者不工作

Question

这是我的代码。当我试图保存产品newfile123456789.txt文件时没有更新。

events.xml 的代码

<?xml version="1.0"?>
<config xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="urn:magento:framework:Event/etc/events.xsd">
    <event name="controller_action_catalog_product_save_entity_after">
        <observer name="Company_Module_Product_Save_After" instance="Company\Module\Observer\productSaveAfter" />
    </event>
</config>

ProductSaveAfter.php 的代码

namespace Company\Module\Observer;

use Magento\Framework\Event\ObserverInterface;

class productSaveAfter implements ObserverInterface
{
    /**
     * @var ObjectManagerInterface
     */
    protected $_objectManager;

    /**
     * @param \Magento\Framework\ObjectManagerInterface $objectManager
     */
    public function __construct(
        \Magento\Framework\ObjectManagerInterface $objectManager
    ) {
        $this->_objectManager = $objectManager;
    }

    /**
     * customer register event handler
     *
     * @param \Magento\Framework\Event\Observer $observer
     * @return void
     */
    public function execute(\Magento\Framework\Event\Observer $observer)
    {
        //$_product = $observer->getProduct(); // you will get product object
        //$_sku     = $_product->getSku(); // for sku

        $myfile = fopen("newfile123456789.txt", "w") or die("Unable to open file!");
        $txt = "John Doe\n";
        fwrite($myfile, $txt);
        fclose($myfile);

        die('Observer Is called!');
    }
}

Answer 1

请定义产品保存事件，如下所示：-

<event name="catalog_product_save_after">
    <observer name="Company_Module_Product_Save_After" instance="YCompany\Module\Observer\productSaveAfter" />
</event>

另外请确保您的观察者正在工作并且创建文件的文件夹具有写入权限。