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

问题描述：

I am having this line in my CakePHP code: $language = $this->Cookie->read('language');

and I'm getting this error:

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

Here is my LanguageComponent.php code

<?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');
        }
    }

}

?>

Where could the problem be?

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

我收到此错误： p>


 致命错误：致电 第27行
  code>  pre> 
 
 这是我的 LanguageComponent.php  strong>代码 p> 
 
 
 ＆lt;？php 
 
 // App :: Import（'Component'，'Cookie  “）;  
class LanguageComponent扩展Object {
 
 public $ controller = null; 
 public $ components = array（'Cookie'）; 
 public $ languages = array（）; 
 
 public function initialize（$ controller）  {
 $ this-＆gt; controller = $ controller; 
 if（empty（$ languages））{
 $ this-＆gt; languages = Configure :: read（'Config.languages'）; 
} 
  $ this-＆gt; set（）; 
} 
 
公共函数集（$ language = null）{
 $ saveCookie = false; 
 if（empty（$ language）＆amp;＆amp; isset（$ this  - ＆gt;控制器））{
 if（！empty（$ this-＆gt; controller-＆gt; params ['named'] ['lang']））{
 $ language = $ this-＆gt; controller-＆gt  ; params ['named'] ['lang']; 
} elseif（！empty（$ this-＆gt; controller-＆gt; params ['url'] ['lang']））{
 $ language = $  this-＆gt; controller-＆gt; params ['url'] ['lang']; 
} 
 if（！empty（$ language））{
 $ saveCookie = true; 
} 
} 
  if（空（$ lan  guage））{
 $ language = $ this-＆gt; Cookie-＆gt; read（'language'）; 
 if（empty（$ language））{
 $ saveCookie = true; 
} 
} \  n if（empty（$ language）＆amp;＆amp;  ！array_key_exists（$ language，$ this-＆gt; languages））{
 $ language = Configure :: read（'Config.language'）; 
} 
配置:: write（'Config.language'，$ language  ）; 
 if（$ saveCookie）{
 $ this-＆gt; Cookie-＆gt; write（'language'，$ language，false，'1 year'）; 
} 
} 
 
} \  n 
？＆gt; 
  code>  pre> 
 
 问题出在哪里？ p> 
  div>

答

Wrong parent class

Compare the code in the question:

class LanguageComponent extends Object {

To any core component:

class AuthComponent extends Component {

Extending the wrong class means that none of the component constructor logic is invoked, and the way components are loaded on first access will not be available.

In the process of upgrading?

This is possibly because the language component was originally written for 1.x - the parent class for components changed when 2.x was released. As mentioned in the 2.0 migration guide:

Component is now the required base class for all components.

答

Try this

    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');
        }
    }

}

?>

答

This revised code works without any warning

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'); } } } ?>

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

Wrong parent class

In the process of upgrading?

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