代码Igniter自定义库 [英] Code Igniter custom library

问题描述

我正在尝试建立一个自定义库，它将包含通过整个网站提供的功能。内部 / application / libraries 我创建了一个新文件 CustomFuncts ：

 <？php if（！defined（'BASEPATH'））exit（'不允许直接脚本访问）; 
 / ** 
 * @brief CommonFuncts 
 *此类用于向整个应用程序提供常见的用户函数。 
 * 
 * @version 1.0 
 * @date 2012年5月
 * 
 * 
 * / 
类CommonFuncts扩展CI_Controller {
 
 protected $ ci; 
 
 / ** 
 *函数构造函数
 * / 
函数__construct（）
 {
 $ this-> ci =& get_instance（）; 
} 
 / ** 
 * @brief checkCookie 
 * 
 *检查先前的cookie，如果存在：
 * @li加载用户详细信息到CI Session对象。 
 * @li重定向到相应的页面。 
 * 
 * / 
 public function verificaCookie（）{
 $ this-> ci-> load-> view（'index'）; 
} 
} 
 / *文件结束CommonFuncts.php * / 
 / *位置：./application/libraries/CommonFuncts.php * / 
  

并在控制器 welcome.php ：

 <？php if（！defined（'BASEPATH'））exit（'不允许直接脚本访问）; 
 
 class Welcome extends CI_Controller {
 
 / ** 
 *此控制器的索引页。 
 * 
 *映射到以下URL 
 * http://example.com/index.php/welcome 
 *  - 或 -  
 * http：// example.com/index.php/welcome/index 
 *  - 或 -  
 *由于此控制器在
 * config / routes.php中设置为默认控制器，它显示在http： //example.com/ 
 * 
 *所以任何其他没有以下划线为前缀的公共方法将
 *映射到/index.php/welcome/<method_name> 
 * @see http://codeigniter.com/user_guide/general/urls.html 
 * / 
 public function index（）
 {
 $ this-> ; load-> library（'commonFuncts'）; 
 $ this-> commonFuncts-> verificaCookie（）; 
} 
} 
 
 / *文件结束welcome.php * / 
 / *位置：./application/controllers/welcome.php * / 
  

我收到以下错误讯息：

 遇到PHP错误
 
严重性：注意
 
消息：未定义属性：Welcome :: $ commonFuncts 
 
文件名：controllers / welcome.php 
 
行号：23 
 
致命错误：调用成员函数verificaCookie（）对非对象在
 / var / www / vhosts / unikodf.com / httpdocs / application / controllers / welcome.php on line 23 
  

我试过很多事情，包括在库中扩展 CI_Controller 并使用 $ this-> load-> view' / code> $ this-> ci-> load-> view`但仍然得到相同的消息。 如果您的库扩展 CI_Controller c>。这意味着你实际上扩展了控制器的功能。而是像下面这样声明你的库：

  class CommonFuncts {} 
  

您不需要继承 CI_Controller ，因为您正在写一个库而不是控制器，不是MVC模型的一部分。它是扩展框架特性的单一类，修复了一个常见的问题或者有许多控制器使用的功能。

：

  $ this-> load-> library（'CommonFuncts'）; 
 $ this-> commonfuncts-> verificaCookie（）; 
  

如果要简化调用库的名称，请使用：

  //第二个参数是传递给库的可选配置
 //第三个参数是名称你想要访问它
 $ this-> load-> library（'CommonFuncts'，''，'common'）; 
 $ this-> common-> verificaCookie（）; // / \ = configuration 
 // / \ / \ / \ = name 
  

I'm trying to build a custom library which will contain functions that would be available through the whole site. Inside /application/libraries I've made a new file CustomFuncts:

<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed');
/**
 * @brief CommonFuncts      
 * This class is used to provide common user functions to the whole application.
 *
 * @version 1.0
 * @date May 2012
 *
 * 
 */
class CommonFuncts extends CI_Controller {

 protected $ci;

/**
 * function constructor
 */
function __construct()
{
    $this->ci =& get_instance();
}
 /**
* @brief checkCookie
* 
* Checks for a previous cookie, and if exists:
* @li Loads user details to CI Session object.
* @li Redirects to the corresponding page.
* 
*/
public function verificaCookie(){
    $this->ci->load->view('index');
}
 }
/* End of file CommonFuncts.php */
/* Location: ./application/libraries/CommonFuncts.php */

And in controller welcome.php:

<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed');

class Welcome extends CI_Controller {

/**
 * Index Page for this controller.
 *
 * Maps to the following URL
 *      http://example.com/index.php/welcome
 *  - or -  
 *      http://example.com/index.php/welcome/index
 *  - or -
 * Since this controller is set as the default controller in 
 * config/routes.php, it's displayed at http://example.com/
 *
 * So any other public methods not prefixed with an underscore will
 * map to /index.php/welcome/<method_name>
 * @see http://codeigniter.com/user_guide/general/urls.html
 */
public function index()
{
    $this->load->library('commonFuncts');
    $this->commonFuncts->verificaCookie();  
}
}

/* End of file welcome.php */
/* Location: ./application/controllers/welcome.php */

I'm getting the following error message:

A PHP Error was encountered

Severity: Notice

Message: Undefined property: Welcome::$commonFuncts

Filename: controllers/welcome.php

Line Number: 23

Fatal error: Call to a member function verificaCookie() on a non-object in
/var/www/vhosts/unikodf.com/httpdocs/application/controllers/welcome.php on line 23

I've tried many things, including extending in the library the CI_Controllerand using $this->load->view' instead of$this->ci->load->view` but still I'm getting the same message. Any help is appreciated.

解决方案

If your library extends CI_Controller. That means that you are actually extending the functionality of the controllers. Instead declare your library like this:

class CommonFuncts { }

You don't need to inherit from CI_Controller, since you are writing a library not a controller and a library is not part of the MVC model. It's single class which extends the features of the framework, fixes a common issue or has a functionality used by many controllers.

To access it's methods use:

$this->load->library('CommonFuncts');
$this->commonfuncts->verificaCookie();

If you want to simplify the name with which you call the library use:

// The second argument is the optional configuration passed to the library
// The third argument is the name with which you would like to access it
$this->load->library('CommonFuncts', '', 'common');
$this->common->verificaCookie(); //  /\ = configuration
//     /\/\/\ = name

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