Undefined property $db in method of CodeIgniter class extended from CI_Model

Question

I have a problem when fetching data from database. How can I fix this? My code:

class Disaster_model extends CI_Model
{

    public function __construct()
    {
        parent::__construct();
        $this->table = 'disasters';
    }

    public function lists()
    {
        $data = $this->db->get($this->table);
        return json_encode($data->result());
    }
}

The errors are:

Undefined property: Disaster::$db

and

Call to a member function get() on null

Put out your $this->table from constructor set as private $table = 'disasters then access it via $data = $this->db->get($this->table); — Hendra Nucleo
– Hendra Nucleo, Commented Dec 31, 2014 at 15:25
Thanks, but I already figured out the problem, I just need to autoload database in database.php. — user3569641
– user3569641, Commented Dec 31, 2014 at 15:26

mickmackusa · Accepted Answer · 2025-10-19 21:52:41Z

1

Oh, I forgot to autoload database on autoload.php.

I just added database in $autoload['libraries'] = array('database');

edited Oct 19 at 21:52

mickmackusa♦

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answered Dec 31, 2014 at 15:25

user3569641

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Comments

geggleto · Accepted Answer · 2014-12-31 15:14:03Z

0

You need to setup the database connection in your code igniter config.

This is basically saying the ->db variable is null.

Setup your DB in Code Igniter

answered Dec 31, 2014 at 15:14

geggleto

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