Question

我在CakePHP代码中有这一行：$language = $this->Cookie->read('language');

我收到此错误：

Fatal error: Call to a member function read() on a non-object in
C:\Apache24\htdocs\cake\app\Controller\Component\LanguageComponent.php on line 27

这是我的 LanguageComponent.php 代码

<?php

//App::Import('Component', 'Cookie'); 
class LanguageComponent extends Object {

    public $controller = null;
    public $components = array('Cookie');
    public $languages = array();

    public function initialize($controller) {
        $this->controller = $controller;
        if (empty($languages)) {
            $this->languages = Configure::read('Config.languages');
        }
        $this->set();
    }

    public function set($language = null) {
        $saveCookie = false;
        if (empty($language) && isset($this->controller)) {
            if (!empty($this->controller->params['named']['lang'])) {
                $language = $this->controller->params['named']['lang'];
            } elseif (!empty($this->controller->params['url']['lang'])) {
                $language = $this->controller->params['url']['lang'];
            }
            if (!empty($language)) {
                $saveCookie = true;
            }
        }
        if (empty($language)) {
            $language = $this->Cookie->read('language');
            if (empty($language)) {
                $saveCookie = true;
            }
        }
        if (empty($language) && !array_key_exists($language, $this->languages)) {
            $language = Configure::read('Config.language');
        }
        Configure::write('Config.language', $language);
        if ($saveCookie) {
            $this->Cookie->write('language', $language, false, '1 year');
        }
    }

}

?>

问题出在哪里？

Answer 1

错误的父类

比较问题中的代码：

class LanguageComponent extends Object {

致any core component：

class AuthComponent extends Component {

扩展错误的类意味着没有调用component constructor logic，the way components are loaded on first access将无法使用。

在升级过程中？

这可能是因为语言组件最初是为1.x编写的 - 在2.x发布时组件的父类已更改。如the 2.0 migration guide中所述：

Component现在是所有组件所需的基类。

Answer 2

试试这个

    public $controller = null;
    public $languages = array();
    public $Cookie;

    public function initialize($controller) {
        $this->controller = $controller;
        if (empty($languages)) {
            $this->languages = Configure::read('Config.languages');
        }
        $this->set();
    }

    public function set($language = null) {
        $this->Cookie = new CookieComponent(new ComponentCollection());
        $saveCookie = false;
        if (empty($language) && isset($this->controller)) {
            if (!empty($this->controller->params['named']['lang'])) {
                $language = $this->controller->params['named']['lang'];
            } elseif (!empty($this->controller->params['url']['lang'])) {
                $language = $this->controller->params['url']['lang'];
            }
            if (!empty($language)) {
                $saveCookie = true;
            }
        }
        if (empty($language)) {
            $language = $this->Cookie->read('language');
            if (empty($language)) {
                $saveCookie = true;
            }
        }
        if (empty($language) && !array_key_exists($language, $this->languages)) {
            $language = Configure::read('Config.language');
        }
        Configure::write('Config.language', $language);
        if ($saveCookie) {
            $this->Cookie->write('language', $language, false, '1 year');
        }
    }

}

?>

Answer 3

此修订后的代码无需任何警告

controller = $ controller; if（empty（$ languages））{ $ this-＆gt; languages = Configure :: read（＆＃39; Config.languages＆＃39;）; } $这 - ＆gt;设置（）; } 公共函数集（$ language = null）{ $ this-＆gt; Cookie = new CookieComponent（new ComponentCollection（））; $ saveCookie = false; if（empty（$ language）＆amp;＆amp; isset（$ this-＆gt; controller））{ if（！empty（$ this-＆gt; controller-＆gt; params [＆＃39; named＆＃39;] [＆＃39; lang＆＃39;]））{ $ language = $ this-＆gt; controller-＆gt; params [＆＃39; named＆＃39;] [＆＃39; lang＆＃39;]; } elseif（！empty（$ this-＆gt; controller-＆gt; params [＆＃39; url＆＃39;] [＆＃39; lang＆＃39;]））{ $ language = $ this-＆gt; controller-＆gt; params [＆＃39; url＆＃39;] [＆＃39; lang＆＃39;]; } if（！empty（$ language））{ $ saveCookie = true; } } if（empty（$ language））{ $ language = $ this-＆gt; Cookie-＆gt; read（＆＃39; language＆＃39;）; if（empty（$ language））{ $ saveCookie = true; } } if（空（$ language）＆amp;＆amp;！array_key_exists（$ language，$ this-＆gt; languages））{ $ language = Configure :: read（＆＃39; Config.language＆＃39;）; } 配置:: write（＆＃39; Config.language＆＃39;，$ language）; if（$ saveCookie）{ $ this-＆gt; Cookie-＆gt;写（＆＃39;语言＆＃39;，$ language，false，＆＃39; 1年＆＃39;）; } } } ？＆GT;

致命错误：在LanguageComponent上的非对象上调用成员函数read（）

3 个答案:

错误的父类

在升级过程中？