CodeIgniter链接到另一个页面/控制器

Question

I am a beginner in CodeIgniter framework and I have problem with links. I found a couple of pages in which is explained how to link pages, but from some reason I have problem to link two pages. I did this:

<a href="<?php echo site_url('controller_proffesor') ?>">Insert Labwork</a>

and that should call controller_proffesor method :

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

i try also this:

<a href="<?php echo site_url('controller_proffesor/index') ?>">Insert Labwork</a>

but when i click on that link this is what i get:

A PHP Error was encountered
Severity: Notice
Message: Undefined property: Controller_proffesor::$load
Filename: controllers/controller_proffesor.php
Line Number: 7
Backtrace:

i have also include this line in my autoload file :

$autoload['helper'] = array('url','form');

What am I doing wrong?

Answer 1

Within the constructor have you added:

parent::__construct();

Try adding it inside __construct(). It invokes the constructor of inherited parent class CI_Controller.

Your code should look like this..

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

        //followed by your helper, model load statements
    } 

NOTE: Refer this https://stackoverflow.com/a/21339891/5176188 for more details. This may be a duplicate question.