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PHP

Posted by Arash Emadi
Arash Emadi
10,002 Points

How can I have a super global variable in CodeIgniter which is accessible in all my Controllers?

Hello. I've been developing a web app with CodeIgniter.

In my admin area, I want to know the Current User's info on every page and every controller.

How can I set this variable once and make all controllers know it and use it without actually writing the code inside every Controller? As of now, I have to introduce my $data['current_user'] variable inside all of my back-end variables. Example code below:

<?php
/**
* Admin Dashboard Class (INDEX)
*/
class Dashboard extends MY_Controller
{
    // INDEX METHOD
    public function index(){
    // If Logged In Get Current User (Add to All Controllers)
    $data['cuser'] = $this->User_model->get_user($this->session->userdata("user_id")->id);
    // View
    $data['main_content'] = 'admin/dashboard/index';
    $this->load->view('admin/layouts/main', $data);

    }
}
?>

1 Answer

miguelcastro2
miguelcastro2
Courses Plus Student 6,573 Points

Create a base controller that all of your other controllers extend from. If in your base controller you have a property that stores the user's info, then all of the controllers which extend from the base controller will inherit the properties.

Example:

<?php

// Base controller which sets application wide properties.

class BaseController extends MY_Controller
{

    protected $data = [];

    public function __construct()
     {
        // Ensure you run parent constructor
        parent::__construct();    
        $this->setUser();
     }

    public function setUser() 
   {
       $this->data['cuser'] = $this->User_model->get_user($this->session->userdata("user_id")->id);
    }

}


class Dashboard extends BaseController
{

    public function __construct()
     {
        // Ensure you run parent constructor
        parent::__construct();    
     }

    public function index() {     
       // Access the data property using $this
       $this->data['main_content'] = 'admin/dashboard/index';
       $this->load->view('admin/layouts/main', $this->data);
    }
}
?>

Now all of the controllers that extend BaseController will have the user info. This is very handy as you can also setup a lot of what you need throughout your application within your base controller and not repeat yourself in other controllers.