致命错误:在布尔值上调用成员函数getWelcome() [英] Fatal error: Call to a member function getWelcome() on boolean

问题描述

我知道

php致命错误:在布尔值中调用成员函数getWelcome() /home/cloudpanel/htdocs/domain.com/app/code/core/Mage/Page/Block/Html/Welcome.php 在第43行.

php fatal error: Call to a member function getWelcome() on boolean in /home/cloudpanel/htdocs/domain.com/app/code/core/Mage/Page/Block/Html/Welcome.php on line 43.

如何解决Magento 1.7中的此错误?

How to solve this error in Magento 1.7?

class Mage_Page_Block_Html_Welcome extends Mage_Core_Block_Template
{
    /**
     * Get block messsage
     *
     * @return string
     */
    protected function _toHtml()
    {
                return Mage::app()->getLayout()->getBlock('header')->getWelcome();

    }
}

推荐答案

检查 http://freegento.com/doc/d7/d92/class_mage___core___model___layout.html#4c2f3ed0733b1d16c6b9d1d13898574f

当找不到该块时，getBlock返回false而不是对象，并且当您尝试对此调用getWelcome时抛出错误.

When the block can't be found, the getBlock returns false instead of an object, and the error is thrown when you try to call getWelcome on this.

(在链接无效的情况下定义getBlock):

(definition of getBlock in case the link doesn't work):

{
         if (isset($this->_blocks[$name])) {
             return $this->_blocks[$name];
         } else {
             return false;
         }
     }

添加if语句以在尝试对其进行操作之前检查该块是否存在.

Add an if statement to check if the block exists before trying to operate on it.

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