CodeIgniter4 - pre-condition for all methods from controller

Question

I'm using CodeIgniter 4.

I have 2 controllers:

<?php namespace App\Controllers;

class Dashboard extends BaseController{

    public function index(){
        
        //pre-condition - logged
        if(!$this->session->has("email")){

            //go to login
            return redirect()->route("login");

        }

        return view("dashboard");

    }

}

//---------------------

class Profile extends BaseController{...}

In those 2 controllers I have some methods which represent routes /dashboard, /profile, /profile/settings, etc.

In every method I have the same pre-codition if(...){ return redirect()->route("login"); }.

This pre-condition check if user is logged.

How I can set this pre-condition to be at all methods from controller, without rewriting in every method from Dashboard and Profile?

@MD.JubairMizan I don't know how. I'm relative new with CodeIgniter and PHP. — KunLun, Jul 26 '20 at 09:33
I am writting a answer try this after call your class it should work — MD. Jubair Mizan, Jul 26 '20 at 09:35
A better practice is to use Controller Filters. You should take a look at this answer : https://stackoverflow.com/questions/63048335/codeigniter-redirect-to-doesnt-work-in-construct/63049135#63049135 and the doc : https://codeigniter4.github.io/userguide/incoming/filters.html. They answer, by design, your question — ViLar, Jul 27 '20 at 08:23
@ViLar Really thank you. It is better/elegant than what I have done. — KunLun, Jul 27 '20 at 10:34

score 2 · Accepted Answer · answered Jul 26 '20 at 09:34

2

function __construct()
{
    parent::__construct();
    if ( ! $this->session->userdata('logged_in'))
    { 
        redirect('login');
    }
}

answered Jul 26 '20 at 09:34

MD. Jubair Mizan

1,539
1
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20

I get error: `Cannot call constructor` at `parent::__construct();` and in PhpStorm I have this warning `Potentially polymorphic call. The code may be inoperable depending on the actual class instance passed as the argument.` – KunLun Jul 26 '20 at 09:40
try to remove parent::__construct(); and Put this before your class "use CodeIgniter\Controller;" – MD. Jubair Mizan Jul 26 '20 at 09:45
I updated my question. I added the code of class `Dashboard`. Can you show me using the code I added? – KunLun Jul 26 '20 at 09:58
did you follow my previous comment structure it should work with this – MD. Jubair Mizan Jul 26 '20 at 10:05
I removed `parent::__construct();`, but I'm stuck at `Put this before your class "use CodeIgniter\Controller;"`. I'm not sure I know where do you mean. – KunLun Jul 26 '20 at 10:24
use CodeIgniter\Controller; put this after – MD. Jubair Mizan Jul 26 '20 at 10:26
I no longer get error, but the redirect not works. And the if-statement is true. – KunLun Jul 26 '20 at 10:33
as per CI 4 Use this "return redirect()->to('login');" – MD. Jubair Mizan Jul 26 '20 at 10:39
can you use echo "test" before redirect() this is for check you are under the condition – MD. Jubair Mizan Jul 26 '20 at 10:43
Yes, I have `echo` right before `redirect` and inside of the `if`. And it is printed on page, but no redirect. – KunLun Jul 26 '20 at 10:48
did you use route if you are using route then try it return redirect()->route('named_route'); – MD. Jubair Mizan Jul 26 '20 at 10:52
Try previous one if you are using route otherwise try this " return redirect()->to(base_url('public/login')); " – MD. Jubair Mizan Jul 26 '20 at 10:54
Nothing works. I just read that in CI4 can't redirect from `construct` – KunLun Jul 26 '20 at 10:57
header('Location: '.base_url().'login'); exit(); Try this instead of redirect() – MD. Jubair Mizan Jul 26 '20 at 10:59

score -1 · Answer 2 · answered Jul 26 '20 at 09:34

-1

You can run code in every method of a Controller by running it in the __construct() method:-

class Auth_Controller extends CI_Controller {
    function __construct()
    {
         parent::__construct();
    if ( ! $this->session->userdata('logged_in'))
    { 
        redirect('login');
    }
    }
}

answered Jul 26 '20 at 09:34

KUMAR

1,993
2
9
26

PhpStorm: `Undefined class 'CI_Controller' `. – KunLun Jul 26 '20 at 09:43
This is a CI3 answer. Question here is under CI4 – ViLar Jul 27 '20 at 08:20

CodeIgniter4 - pre-condition for all methods from controller

2 Answers2