An uncaught Exception was encountered. Call to undefined method Admin_model - codeigniter

Question

Okay i've cloned a codeigniter code copy and use it to designed a app, recently i wanted to start a new app and did opened the downloaded copy again and started to program, but now i am getting the the above mentioned error, this code worked in my prevouis code but in this it isn't.
An uncaught Exception was encountered
Type: Error
Message: Call to undefined method Admin_model::get_stock_item()
Filename: C:\xampp\htdocs\francois\application\controllers\Admin.php
Line Number: 239
Here is my controller
///<?php
if (!defined('BASEPATH')) {
exit('No direct script access allowed');
}
class Admin extends CI_Controller {
public function __Construct() {
parent::__Construct();
if(!$this->session->userdata('logged_in')) {
redirect(base_url());
}
$this->load->model('Admin_model');
}
function stock_adjustment($id)
{
$data = array(
'formTitle' => 'Stock Management',
'title' => 'Stock Management'
);
$data["data"] = $this->Admin_model->get_stock_item('', '', $id);
$this->load->view('frame/header_view');
$this->load->view('frame/sidebar_nav_view');
$this->load->view('stock/update_price', $data);
$this->Admin_model->Update_asset($id);
redirect( base_url('stock/stock_view'));
}
}
Model
///function get_stock_item($limit, $start, $id=0)
{
///if(empty($id)){
///$this->db->limit($limit, $start);
///$query = $this->db->get('tbl_stock');
///if ($query->num_rows() > 0) {
foreach ($query->result() as $row) {
$data[] = $row;
}
///return $data;
}
/// return false;
///} else {
///$query = $this->db->get_where('tbl_stock', array('id' => $id));
///return $query->row_array();
}
}
Please as i said it worked in my othered app but not in this one code is exaclty the same.

Answer 1

The error message is quite clear: The class Admin_model does not have a method named get_stock_item(). Probably beause you have commented-out the definition of the method.
Change the line
///function get_stock_item($limit, $start, $id=0)
to
function get_stock_item($limit, $start, $id=0)
There's a lot of other code that is commented and, as it stands, I think you will get lots of other errors running that model method.