Categories_model.php

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

class Categories_model extends MY_Model {

    protected $table        = 'categories';
    protected $key          = 'id';
    protected $soft_deletes = false;
    protected $date_format  = 'datetime';
    protected $set_created  = false;
    protected $set_modified = false;

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

    public function getAll(){
        return $this->db->select('*')
                    ->from('categories')
                    ->get()
                    ->result();
    }

}