CI3框架初识-控制其使用注意-Call to a member function model() on null in

yuxianjun2012

于 2017-02-17 11:05:08 发布

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分类专栏： CI框架开发学习文章标签： CI CI3 CodeIgniter3 php 框架

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在尝试使用CI3框架的Model处理数据时遇到错误，报错信息为'Call to a member function model() on null'。问题源于控制器中未正确调用父类构造方法加载加载Loader类。解决方案是在控制器的构造方法中调用parent::__construct()确保Model的加载。

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入手ci3 在使用model处理数据的时候发现各种报错，结果是控制器中的构造方法需要加载父类构造方法

报错提示如下： Fatal error: Call to a member function model() on null in

报错例子如下：

A PHP Error was encountered

Severity: Notice

Message: Undefined property: Blog::$load

Filename: controllers/Blog.php

Line Number: 16

Backtrace:

File: D:\UPUPW_AP5.6\htdocs\ci3\application\controllers\Blog.php
Line: 16
Function: _error_handler

File: D:\UPUPW_AP5.6\htdocs\ci3\index.php
Line: 316
Function: require_once

( ! ) Fatal error: Call to a member function model() on null in D:\UPUPW_AP5.6\htdocs\ci3\application\controllers\Blog.php on line 16
Call Stack
# Time Memory FunctionLocation
1 0.0002 145256 {main}( )...\index.php:0
2 0.0026 147632 require_once( 'D:\UPUPW_AP5.6\htdocs\ci3\system\core\CodeIgniter.php' )...\index.php:316
3 0.0363 318920 Blog->__construct( )...\CodeIgniter.php:518
A PHP Error was encountered

Severity: Error

Message: Call to a member function model() on null

Filename: controllers/Blog.php

Line Number: 16

Backtrace: