如何在codeIgniter中定义一个全局变量（值） [英] How to define a global variable(value) in codeIgniter

问题描述

我只是不意味着如何在CodeIgniter中定义一个全局变量/常量。
让我解释一下：
我做了一个主题引擎，可以从当前登录的用户控制面板中选择。这个引擎不是很复杂，而是一个简单的文件夹。反正，我在应用程序，我做的是，我写一行代码来获取用户选择的当前主题。我使用一行代码获取名称，然后将其存储在一个变量中：

I simply do not mean how to define a global variable/constant in CodeIgniter. Let me explain: I have made a theme engine which is select-able from the current logged in user's control panel. This engine is not very complicated, but a simple folder. anyway, what I do across the application, is that I write one line of code to get the current theme selected by the user. I use a one line of code to get the name, and then store it in a variable:

$theme_name = $this->theme->get_theme_with_slash(false);

然后，我使用$ theme_name这样得到正确的视图：

And then, I user $theme_name like this to get the proper view:

$this->load->view($theme_name.'result', $data);

在所有加载视图的控制器中，我应该重复这个过程。我需要的是调用获取theme_name并存储在变量中的函数，然后在整个应用程序中使用变量/ session / function。

And in all of my controllers that loads view I should repeat this process. What I need, is to call the function which gets the theme_name and store in the variable and then use the variable/session/function across the application. My approach currently is the helper's function which is a little less convenient compared to session/variable.

推荐答案

创建一个核心控制器，因为您的过程需要逻辑运算，那么您需要一个方法。

Create A core controller, since your process requires logical operations then you need a method for that.

application / core / MY_Controller.php

class MY_Controller Extends CI_Controller
{

   protected $default_theme = 'theme';

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

   public function get_theme()
   {
         //your code for selecting the current theme selected from
         //the database
         $theme_from_db = '';

         return $theme_from_db == NULL ? $this->default_theme : $theme_from_db;
   }
}

您的控制器必须扩展MY_Controller

Your Controller must extend MY_Controller

application / controller / view.php

class view extends MY_Controller
{
   public function index()
   {
     $this->load->view($this->get_theme().'result', $data);
   }
}

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