+- CodeIgniter Forums (https://forum.codeigniter.com)
+-- Forum: CodeIgniter 4 (https://forum.codeigniter.com/forumdisplay.php?fid=28)
+--- Forum: CodeIgniter 4 Support (https://forum.codeigniter.com/forumdisplay.php?fid=30)
+--- Thread: Class not found error with events (/showthread.php?tid=84880)
Class not found error with events - objecttothis - 11-18-2022
I'm migrating a CI3 app to CI4, so naturally that means converting the hooks to events.
I have the following in app/Config/Events.php:
PHP Code:
Events::on('post_controller_constructor', ['Load_config', 'load_config']);
In app/Events/Load_config.php I have:
PHP Code:
<?php
namespace App\Events;
use app\Libraries\MY_Migration;
use app\Models\Appconfig;
use CodeIgniter\Session\Session;
use Config\Services;
/**
* @property my_migration migration;
* @property session session;
* @property appconfig appconfig;
* @property mixed $migration_config
* @property mixed $config
*/
class Load_config
{
/**
* Loads configuration from database into App CI config and then applies those settings
*/
public function load_config()
{
.
.
.
But when I load the application I'm greeted with "Error Class 'Load_config' not found". I'm assuming that this means that the event loader is not looking where I'm expecting it to look. A couple of questions come up:
- Where should classes formerly in the hooks folder be kept?
- Am I missing a reference in my event call that would cause the event loader to look in app/Events/ to find the class? I thought namespacing the class would take care of that, but perhaps I'm mistaken.
RE: Class not found error with events - kenjis - 11-18-2022
The classname is not Load_config but \App\Events\Load_config.
RE: Class not found error with events - objecttothis - 11-20-2022
(11-18-2022, 05:09 AM)kenjis Wrote: The classname is not Load_config but \App\Events\Load_config.
Hmmm. That seems counter-intuitive to me. What's the point of namespacing if I then have to put the namespace of the class into the event call?
Nonetheless, I did that and it resolved that problem.
RE: Class not found error with events - kenjis - 11-20-2022
It is PHP's specification.
When you use namespacing, the classname is \App\Events\Load_config.
When you specify the classname in a string, you can also write App\Events\Load_config.
If you write Load_config in a string, it means \Load_config and it is the different namespace.
If you use an IDE like PhpStorm and ::class constant, you can write it as \App\Events\Load_config::class,
and IDE can auto complete the classname.
Code:
Events::on('post_controller_constructor', [\App\Events\Load_config::class, 'load_config']);