global controller in codeigniter?

Question

Is there a way in codeigniter to define a global function that can be called in all controllers easily?

I have a application that will show all latest users who have registered on the app.

what im doing now is, i have autoloaded a model Latest_model with the below function

function new_users()
{
  $this->db->select('*');

  $this->db->from('users');
  $this->db->order_by('id', 'DESC'); 
  $this->db->limit('5');

  $query = $this->db->get();
  return $query->result_array();

}

and on all the controllers, at the beginning i call this model

$data['new'] = $this->Latest_model->new_users();

It works but, i need to repeat this in all the functions.

So what would be the best way to achieve this?

Any help will be appreciated

Suggestion: Create a base controller with that method and let your other controllers extend it. — M. Eriksson
– M. Eriksson, Commented Feb 19, 2017 at 19:07

Evgeny · Accepted Answer · 2017-02-19 20:00:35Z

4

You can always extend default controller with new functionality. Codeigniter's documentation is the good place to start.

In short you should create your base controller named MY_Controller under application/core/ folder. Then you can place inside this file some code like this:

<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed');

class MY_Controller extends CI_Controller {

    protected $data = [];

    function __construct() {
        parent::__construct();

        $this->data['new'] = $this->Latest_model->new_users();
    }
}

Then from all your controllers you can access the data array with $this->data.

answered Feb 19, 2017 at 20:00

Evgeny

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1 Comment

Tpojka Over a year ago

@LiveEn This is great answer, and also in addition you can check Avenirer's MY_Model that can help you to simplify interaction with various models you are using in application.

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