扩展CI_Controller /间接修改重载属性 [英] Extending CI_Controller / Indirect modification of overloaded property

问题描述

CI社区似乎没有回答这个问题（或者它是如此明显，它看起来像一个noob问题？），所以我问这里。

我已经看到这种错误很长时间了（错误消息跟着），但我一直使用这个脏解决方法。现在我不想再编辑核心的CI代码，我知道必须有一个优雅的解决方案。

这里是设置。

在我的应用程序/ config / routes我有这个

  $ route ['default_controller' ] =dispatcher; 
  

application / controllers /中的Dispatcher类定义如下：

  class Dispatcher extends MY_Controller {
 
 function __construct（）{
 parent :: __ construct 
 $ this-> load-> helper（array（'form'，'https'））; 
} 
 
 
 function index（）{
 
＃load models 
 $ this-> load-> model /地图'）; 
 $ this-> load-> model（'site / langs'）; 
 $ this-> load-> model（'site / pages'）; 
 if（$ mapped = $ this-> map-> get_map（））{//这是第21行
 $ this-> langs-> set_user_lang（$ this-> GLO ['show_lang_in_url']，$ this-> GLO ['show_lang_at_home']）; 
 $ red = base_url（）。$ this-> GLO ['user_lang_label']。/。$ mapped; 
 redirect（$ red，refresh）; 
} 
 
 ... 
  

/ core定义如下：

  class MY_Controller extends CI_Controller {
 
 public function __construct {
 parent :: __ construct（）; 
 $ this-> GLO = array（）; 
 
＃
＃set defaults：
＃
 $ this-> GLO ['deb'] =''; 
 $ this-> GLO ['baseurl'] = base_url（）; 
 ...（更多GLO [key] = value）
} 
 
 public function __set（$ key，$ value）{
 $ this-> GLO [$ key] = $ value;我使用的每个模型都是这样开始的（相应命名）：
每个模型都是这样开始的（相应命名）：
} 
  

$ b <

  class Map extends CI_Model {
 
 function __construct（）{
 parent :: __ construct 
} 
 
 function get_map（）{
 ..... 
 return true; 
} 
  

现在使用CI 2.1.2，PHP 5.3.3，Apache 2当尝试加载页面时，收到此错误：

遇到PHP错误严重性：通知消息：间接
修改重载属性Langs :: $ GLO没有效果
文件名：site / langs.php行号：82

遇到PHP错误严重性：通知消息：未定义
属性：Dispatcher :: $ map文件名：controllers / dispatcher.php行
编号：21

致命错误：成员函数get_map（）on
/home/webdev/MC/_WWW/application/controllers/dispatcher.php on line 21

第21行是地图模型中上面标记的那一行

  if（$ mapped = $ this - > map-> get_map（））{
  

this：

  $ this-> GLO ['langs'] [] = $ temp; 
 

在整个代码中，这个GLO数组被引用为$ this-GLO [ key ]。它必须不时地被读和写。如果我删除MY_Controller中的__set函数，我会得到更多的警告。

问题在哪里？

解决方案

我不确定第一个错误 - 但这两个：

遇到PHP错误严重性：注意消息：未定义
属性：Dispatcher :: $ map文件名：controllers / dispatcher.php Line
Number：21

致命错误：调用
/ home / webdev / MC / _WWW中非对象上的成员函数get_map应用程序/ controllers / dispatcher.php第21行

...看起来你没有正确加载你的模型？

更改

  if（$ mapped = $ this-> map-> get_map （））{
  

到

  $ this-> load-> model（'map'）; 
 if（$ mapped = $ this-> map-> get_map（））{
  

the CI community seems to have no answer to this (or maybe it is so obvious, that it looks like a noob question?), so I ask here.

I've been seeing this kind of error for a long time now (error messages follow), however I have always used this "dirty" workaround. Now I do not want to edit the core CI code anymore, and I know there must be a graceful solution to this.

Here is the setup.

In my application/config/routes I have this

$route['default_controller'] = "dispatcher";

The Dispatcher class in application/controllers/ is defined as this:

class Dispatcher extends MY_Controller {

 function __construct() {
  parent::__construct();
  $this->load->helper(array('form','https'));
 }


 function index() {

  # load models
  $this->load->model('site/map');
  $this->load->model('site/langs');
  $this->load->model('site/pages');
  if ( $mapped = $this->map->get_map() ){ // this is the line 21
   $this->langs->set_user_lang( $this->GLO['show_lang_in_url'], $this->GLO['show_lang_at_home'] );
   $red = base_url().$this->GLO['user_lang_label']."/".$mapped;
   redirect($red, "refresh");
   } 

  ...

now MY_Controller resides in application/core and is defined as follows:

class MY_Controller extends CI_Controller {

 public function __construct() {
        parent::__construct();
  $this->GLO = array();   

  #
  # set defaults:
  #
  $this->GLO['deb'] = '';
  $this->GLO['baseurl'] = base_url();
  ... (more GLO[key] = value ) 
}

 public function __set ($key, $value ) {
  $this->GLO[$key] = $value;
 }

Every model I use starts like this (named accordingly):

class Map extends CI_Model {

 function __construct(){
  parent::__construct(); 
 }

 function get_map(){
        .....
        return true;
        }

Now with CI 2.1.2, PHP 5.3.3, Apache 2 on Debian when trying to load a page, I am getting this error:

A PHP Error was encountered Severity: Notice Message: Indirect modification of overloaded property Langs::$GLO has no effect Filename: site/langs.php Line Number: 82

A PHP Error was encountered Severity: Notice Message: Undefined property: Dispatcher::$map Filename: controllers/dispatcher.php Line Number: 21

Fatal error: Call to a member function get_map() on a non-object in /home/webdev/MC/_WWW/application/controllers/dispatcher.php on line 21

The line 21 is the one marked above in the Map model

if ( $mapped = $this->map->get_map() ){

the line 82 in the other model looks like this:

$this->GLO['langs'][] = $temp;

Throughout the code, this GLO array is referenced as $this-GLO[key]. It must be read and written from time to time. If I delete the __set function in MY_Controller, I get more of those warnings.

Where is the problem?

Thanks a lot in advance!

解决方案

I'm not sure about the first error - but these two:

A PHP Error was encountered Severity: Notice Message: Undefined property: Dispatcher::$map Filename: controllers/dispatcher.php Line Number: 21

Fatal error: Call to a member function get_map() on a non-object in /home/webdev/MC/_WWW/application/controllers/dispatcher.php on line 21

...look like you havent loaded your model correctly?

change

if ( $mapped = $this->map->get_map() ){

to

$this->load->model('map');
if ( $mapped = $this->map->get_map() ){

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