php CodeIgniter 2：如何多次扩展 CI_Controller？

Question

提问by Camsoft

I have successfully extended the CI_Controller class by creating a MY_Controller.php which I have placed in the application/core directory.

我已经通过创建一个 MY_Controller.php 成功地扩展了 CI_Controller 类，并将其放置在 application/core 目录中。

core/My_Controller.php looks something like this:

core/My_Controller.php 看起来像这样：

class MY_Controller extends CI_Controller {

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

Then when I create normal controllers they look something like this:

然后当我创建普通控制器时，它们看起来像这样：

class Home extends MY_Controller {

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

    function index()
    {
        $this->load->view('home');
    }
}

I'm creating a admin back end and I want to have a different base class for controllers to extend instead of My_Controller. This is so I can have common methods for the admin controllers (i.e. authentication_check etc.)

我正在创建一个管理后端，我希望有一个不同的基类来扩展控制器而不是 My_Controller。这样我就可以拥有管理控制器的通用方法（即 authentication_check 等）

What I can't work out is how I create another controller that extends CI_Controller.

我无法解决的是如何创建另一个扩展 CI_Controller 的控制器。

The goal is for admin controllers to extend a different base class than the front-end controllers.

目标是让管理控制器扩展与前端控制器不同的基类。

The admin base controller would look like this:

管理基本控制器如下所示：

class MY_Admin_Controller extends CI_Controller {

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

An normal controller for admin pages:

管理页面的普通控制器：

class Admin_home extends MY_Admin_Controller {

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

    function index()
    {
        $this->load->view('admin_home');
    }
}

The problem is that to extend the CI_Controller class you must name your controller file PREFIX_Controller.php and place it in the core/ directory. But I want two controller classes and they can't have the same filename.

问题是要扩展 CI_Controller 类，您必须将控制器文件命名为 PREFIX_Controller.php 并将其放在 core/ 目录中。但是我想要两个控制器类并且它们不能具有相同的文件名。

Answer 1

回答by Cubed Eye

You just put both in the same file, I have a project that is exactly the same as this.

您只需将两者放在同一个文件中，我有一个与此完全相同的项目。

We just have both the admin and normal extended controller in the MY_Controller.phpfile, works fine.

我们在MY_Controller.php文件中只有管理员和普通扩展控制器，工作正常。

The main reason for the MY_Controlleror other extended files is so that CodeIgniter auto initiates them when you load the base file (whether library, helper, etc.), you can have many classes in these files.

MY_Controller或其他扩展文件的主要原因是当您加载基本文件（无论是库、帮助程序等）时，CodeIgniter 会自动启动它们，您可以在这些文件中有许多类。

Edit:

编辑：

You don't even need to call them MY_Admin_Controlleror MY_Controller, we have Admin_Controllerand User_Controllerand Ajax_Controllerin the MY_ControllerFile

你甚至不需要调用它们MY_Admin_Controlleror MY_Controller，我们在文件中有Admin_ControllerandUser_Controller和 andAjax_ControllerMY_Controller

Answer 2

回答by swatkins

What you're doing is correct. You just need all of these files in the application/coredirectory. Here's a post by Phil Sturgeon regarding just this:

你在做什么是正确的。您只需要目录中的所有这些文件application/core。下面是 Phil Sturgeon 的一篇关于这个的帖子：

~~http://philsturgeon.co.uk/blog/2010/02/CodeIgniter-Base-Classes-Keeping-it-DRY~~
http://philsturgeon.uk/blog/2010/02/CodeIgniter-Base-Classes-Keeping-it-DRY/

The trick is to use the __autoload()function - which Phil describes in his post.

诀窍是使用__autoload()函数——Phil 在他的帖子中描述了这一点。

Answer 3

回答by CodeGodie

This is pretty easy. Do the following:

这很容易。请执行下列操作：

Go to the following directory: your_ci_app/application/core/and create a php file called MY_Controller.php(this file will be where your top parent classes will reside)

Open this the file you just created and add your multiple classes, like so:

class Admin_Parent extends CI_Controller {
    public function __construct() {
        parent::__construct();
    }

    public function test() {
        var_dump("from Admin_Parent");
    }
}

class User_Parent extends CI_Controller {

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

    public function test(){
        var_dump("from User_Parent");
    }

}

Create your children controllers under this directory your_ci_app/application/controllers/. I will call it adminchild.php

Open adminchild.phpand create your controller code, make sure to extend the name of the parent class, like so:

class Adminchild extends Admin_Parent {

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

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

}

转到以下目录：your_ci_app/application/core/并创建一个名为的 php 文件MY_Controller.php（此文件将是您的顶级父类所在的位置）

打开您刚刚创建的文件并添加多个类，如下所示：

class Admin_Parent extends CI_Controller {
    public function __construct() {
        parent::__construct();
    }

    public function test() {
        var_dump("from Admin_Parent");
    }
}

class User_Parent extends CI_Controller {

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

    public function test(){
        var_dump("from User_Parent");
    }

}

在此目录下创建您的子控制器your_ci_app/application/controllers/。我会叫它adminchild.php

打开adminchild.php并创建您的控制器代码，确保扩展父类的名称，如下所示：

class Adminchild extends Admin_Parent {

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

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

}

Answer 4

回答by Saman Salehi

if you want to extend another class instead of CI_controller you must include the target class. for example

如果要扩展另一个类而不是 CI_controller，则必须包含目标类。例如

include 'auth.php';

class test extends Auth

Answer 5

回答by antelove

All files in the folder application/core

文件夹application/core中的所有文件

MY 是 CI 的子类

MY 有 2 个子类 Public 和 Dashboard

class MY_Controller extends CI_Controller
{
    public function __construct()
    {
        parent::__construct();

        echo "This is " . __CLASS__ . "<br />";
    }
}

Public

民众

class Public_Controller extends My_Controller
{
    public function __construct()
    {
        parent::__construct();

        echo "This is " . __CLASS__ . "<br />";
    }
}

Dashboard have 2 subclasses, Admin and User

Dashboard 有 2 个子类，Admin 和 User

class Dashboard_Controller extends My_Controller
{
    public function __construct()
    {
        parent::__construct();

        echo "This is " . __CLASS__ . "<br />";
    }
}

Admin

行政

class Admin_Controller extends Dashboard_Controller
{
    public function __construct()
    {
        parent::__construct();

        echo "This is " . __CLASS__ . "<br />";
    }
}

User

用户

class User_Controller extends Dashboard_Controller
{
    public function __construct()
    {
        parent::__construct();

        echo "This is " . __CLASS__ . "<br />";
    }
}

in config/config.php

在config/config.php

/* load class in core folder */
function my_load($class) {        
    if (strpos($class, 'CI_') !== 0) {            
        if (is_readable(APPPATH . 'core' . DIRECTORY_SEPARATOR . $class . '.php' )) {                
            require_once (APPPATH . 'core' . DIRECTORY_SEPARATOR . $class . '.php');                
        }
    }        
}

spl_autoload_register('my_load');

in controller/Home.php

在控制器/Home.php

//class Home extends MY_Controller {
//class Home extends Dashboard_Controller {
class Home extends Admin_Controller {

    public function index()
    {
        echo "This is " . __CLASS__ . "<br />";
        //$this->load->view('home');
    }
}

php CodeIgniter 2：如何多次扩展 CI_Controller？

提问by Camsoft

回答by Cubed Eye

回答by swatkins

回答by CodeGodie

回答by Saman Salehi

回答by antelove

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php CodeIgniter 2：如何多次扩展 CI_Controller？

提问by Camsoft

回答by Cubed Eye

回答by swatkins

回答by CodeGodie

回答by Saman Salehi

回答by antelove

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