$ this关键字在CodeIgniter的视图 [英] $this keyword in view in CodeIgniter

问题描述

我想了解CodeIgniter中视图文件中的 $ this-> load-> view（）如何工作 。

核心/ Controller.php正在调用core / Loader.php，然后调用_ci_load（），然后调用 include path / to / view'）;

不应 $ this 那个时候的Loader类呢？如何 $ this 指向控制器？

根据我的理解，你应该调用$ this-> view（）在视图文件中。不是$ this-> load-> view（），因为load（）函数在Loader内部是不可访问的。它是Controller基类的类变量。即 $ this-> load =& load_class（'Loader'）;

请注意：我试图理解CodeIgniter内部。我完全知道如何嵌入视图文件在其他视图文件作为CodeIgniter用户。请不要离开解释如何使用 $ this-> load（）的答案。

解决方案

上次我检查， $ this c $ c> CI_Loader ，请在视图中尝试 var_dump（$ this）;

。

< hr>

查看：

https://github.com/EllisLab/CodeIgniter/blob/develop/system/core/Controller.php

is_loaded（）; 返回一个数组，其中已经加载了来自主容器的类名和别名。

$ this-> load 是控制器内 CI_Loader 的实例。 p>

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检查：

https://github.com/EllisLab/CodeIgniter/blob/develop/system/core/Loader.php

第778行

I'm trying to understand how $this->load->view() works inside of a view file in CodeIgniter.

The core/Controller.php is calling core/Loader.php which then calls _ci_load() which in turn does an include('/path/to/view');

Shouldn't $this refer to the Loader class at that point? How is $this referring to the controller?

By my understanding, you should have to call $this->view() inside of a view file. Not $this->load->view() because the load() function is not accessible inside of the Loader. It's a class variable of the Controller base class. i.e, $this->load =& load_class('Loader');

Please note: I'm trying to understand the CodeIgniter internals. I know perfectly well how to embed view files in other view files as a CodeIgniter user. Please do not leave answers explaining how to use $this->load().

解决方案

Last time I checked, $this was of class CI_Loader, try var_dump($this); inside a view.

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Check out:

https://github.com/EllisLab/CodeIgniter/blob/develop/system/core/Controller.php

is_loaded(); returns an array with the already loaded classnames and their aliases from the main container.

$this->load is then an instance of CI_Loader inside the controller.

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Check:

https://github.com/EllisLab/CodeIgniter/blob/develop/system/core/Loader.php

Line 778

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