Analysis on methods of CI framework extending system core classes-PHP Tutorial-php.cn

Home

Backend Development

PHP Tutorial

Analysis on methods of CI framework extending system core classes

Jun 14, 2018 pm 01:43 PM

ci framework Expand

This article mainly introduces the method of CI framework to extend system core classes, and analyzes the steps and related operating techniques of CI framework to extend system core classes in the form of examples. Friends in need can refer to this article

The example describes how the CI framework extends the core classes of the system. Share it with everyone for your reference. The details are as follows:

First of all, your system extension class is placed under application/core. Originally, the core class of the system is CI_Controller, so you cannot start with CI_. You need to open application /config/config.php Modify:

$config[&#39;subclass_prefix&#39;] = &#39;MY_&#39;;

Copy after login

is your prefix!

Some public modules can be uninstalled in their own core classes Got it!

I have read Dilicms (lightweight background architecture) these days. For example, his background extension class is like this:

&lt;?php if ( ! defined(&#39;BASEPATH&#39;)) exit(&#39;No direct script access allowed&#39;);
abstract class Admin_Controller extends CI_Controller
{
  /**
  * _admin
  * 保存当前登录用户的信息
  *
  * @var object
  * @access public
  **/
  public $_admin = NULL;
  /**
  * 构造函数
  *
  * @access public
  * @return void
  */
  public function __construct()
  {
    parent::__construct();
    $this-&gt;load-&gt;library(&#39;session&#39;);
    $this-&gt;settings-&gt;load(&#39;backend&#39;);
    $this-&gt;load-&gt;switch_theme(setting(&#39;backend_theme&#39;));
    $this-&gt;_check_login();
    $this-&gt;load-&gt;library(&#39;acl&#39;);
    $this-&gt;load-&gt;library(&#39;plugin_manager&#39;);
  }
 /**
  * 检查用户是否登录
  *
  * @access protected
  * @return void
  */
  protected function _check_login()
  {
    if ( ! $this-&gt;session-&gt;userdata(&#39;uid&#39;))
    { 
      redirect(setting(&#39;backend_access_point&#39;) . &#39;/login&#39;);
    }
    else
    {
      $this-&gt;_admin = $this-&gt;user_mdl-&gt;get_full_user_by_username($this-&gt;session-&gt;userdata(&#39;uid&#39;), &#39;uid&#39;);
      if ($this-&gt;_admin-&gt;status != 1)
      {
        $this-&gt;session-&gt;set_flashdata(&#39;error&#39;, &quot;此帐号已被冻结,请联系管理员!&quot;);
        redirect(setting(&#39;backend_access_point&#39;) . &#39;/login&#39;);
      }
    }
  }
 /**
  * 加载视图
  *
  * @access protected
  * @param string
  * @param array
  * @return void
  */
  protected function _template($template, $data = array())
  {
    $data[&#39;tpl&#39;] = $template;
    $this-&gt;load-&gt;view(&#39;sys_entry&#39;, $data);
  }
 /**
  * 检查权限
  *
  * @access protected
  * @param string
  * @return void
  */
  protected function _check_permit($action = &#39;&#39;, $folder = &#39;&#39;)
  {
    if ( ! $this-&gt;acl-&gt;permit($action, $folder))
    {
      $this-&gt;_message(&#39;对不起，你没有访问这里的权限！&#39;, &#39;&#39;, FALSE);
    }
  }
 /**
  * 信息提示
  *
  * @access public
  * @param string
  * @param string
  * @param bool
  * @param string
  * @return void
  */
  public function _message($msg, $goto = &#39;&#39;, $auto = TRUE, $fix = &#39;&#39;)
  {
    if($goto == &#39;&#39;)
    {
      $goto = isset($_SERVER[&#39;HTTP_REFERER&#39;]) ? $_SERVER[&#39;HTTP_REFERER&#39;] : site_url();
    }
    else
    {
      $goto = strpos($goto, &#39;http&#39;) !== false ? $goto : backend_url($goto);  
    }
    $goto .= $fix;
    $this-&gt;_template(&#39;sys_message&#39;, array(&#39;msg&#39; =&gt; $msg, &#39;goto&#39; =&gt; $goto, &#39;auto&#39; =&gt; $auto));
    echo $this-&gt;output-&gt;get_output();
    exit();
  }
}

Copy after login

It puts some public information into verification, login, and jump in Admin_Controller, so I did the same when writing the front desk and extended Font_Controller:

abstract class Font_Controller extends CI_Controller{
 public function __construct() {
  parent::__construct();
 }
 //前台加载视图方法
 public function _template($template, $data = array()){
  $data[&#39;nav&#39;] = $this-&gt;get_nav();
  $data[&#39;tpl&#39;] = $template;
  $this-&gt;load-&gt;view(&#39;default&#39;,$data);
 }
 //公共导航信息
 public function get_nav(){
 }
 //公共友情链接信息
 public function get_friendlink(){
 }
}

Copy after login

Tips, some frequently used tools and functions can be placed in helper!

The above is the entire content of this article. I hope it will be helpful to everyone's study. For more related content, please pay attention to the PHP Chinese website!

Related recommendations:

About the method of loading views in CI framework views

Simple analysis of MVC in CI framework

The above is the detailed content of Analysis on methods of CI framework extending system core classes. For more information, please follow other related articles on the PHP Chinese website!

Statement of this Website

The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn