PHP CodeIgniter Error: Undefined Property: Model - php

Question

I was trying to use a inherited model, by creating a model in core/ folder, and create a newer model that extends the model in core/ folder, but then, when I try to log in, I get this error:
Severity: Notice
Message: Undefined property: CL_Login::$M_Login
Filename: controllers/CL_Login.php
Line Number: 47
The form is showed correctly, and posts to the following controller CL_Login/VerifyLogin.
I have created the following controller:
public function VerifyLogin()
{
$this->form_validation->set_rules('InputUsername', 'Username', 'required');
$this->form_validation->set_rules('InputPassword', 'Password', 'required|callback_CheckPassword');
if ($this->form_validation->run())
{
echo 'login sukses';
}
else
{
echo 'login gagal';
}
}
public function CheckPassword()
{
$output = $this->M_Login->get_login($this->input->post('InputUsername'),$this->input->post('InputPassword'));
print_r($output);
// if($output)
// {
// return true;
// }
// else
// {
// return false;
// }
}
And here's the model inside Model folder:
class M_Login extends MY_Model {
protected $table = 'ms_user';
protected $primary_key = 'user_id';
public function __construct()
{
parent::__construct();
}
public function get_login($query = NULL, $username, $password)
{
$query['where']['user_name'] = $username;
$query['where']['user_password'] = md5($password);
return $this->get($query);
}
}
And here's the model inside core folder:
<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed');
/**
* Master model of SimplaCMS
*
* #author Akbar Syarif
* #email aksa.uncp#gmail.com
* #package SimplaCMS
*/
class MY_Model extends CI_Model {
// table
protected $table;
// primary key
protected $primary_key;
// error status
protected $error = FALSE;
// error message
protected $error_message = array();
public function __construct()
{
parent::__construct();
}
/**
* Add custom data to table
*
* #param Array (data)
* #return boolen. true if data successfully save and false if error occured
*/
public function insert( $data = NULL )
{
// if data not set
if ( is_null($data) ) {
$this->error = TRUE;
throw new Exception("The first parameter cannot be empty");
}
// if data not array
if ( ! is_array($data) ) {
$this->error = TRUE;
throw new Exception("The first parameter must be an array");
}
if ( ! $this->error ) {
$this->db->insert($this->table, $data);
} else {
return FALSE;
}
}
public function insert_batch( $data = NULL )
{
// if data not set
if ( is_null($data) ) {
$this->error = TRUE;
throw new Exception("The first parameter cannot be empty");
}
// if data not array
if ( ! is_array($data) ) {
$this->error = TRUE;
throw new Exception("The first parameter must be an array");
}
if ( ! $this->error ) {
$this->db->insert_batch($this->table, $data);
} else {
return FALSE;
}
}
/**
* Get row
* #param Array (data)
* #return mixed. return false if nothing row found,
* return object if there's at least one row found
*/
private function _get( $query = NULL )
{
if(isset($query['select'])) $this->db->select($query['select']);
if(isset($query['where'])) $this->db->where($query['where']);
if(isset($query['where_no_escaped'])) $this->db->where($query['where_no_escaped'], NULL, FALSE);
if(isset($query['or_where'])) $this->db->or_where($query['or_where']);
if(isset($query['or_where_no_escaped'])) $this->db->or_where($query['or_where_no_escaped'], NULL, FALSE);
if(isset($query['like'])) $this->db->like($query['like']);
if(isset($query['order_by'])) $this->db->order_by($query['order_by']);
if(isset($query['limit'])) $this->db->limit($query['limit']);
if(isset($query['limit_offset'])) $this->db->limit($query['limit_offset'][0], $query['limit_offset'][1]);
// join table
if(isset($query['join'])) {
if ( ! is_array($query['join']) ) {
$this->error = TRUE;
throw new Exception("Join value must be an array");
} else {
foreach ($query['join'] as $key => $value) {
$this->db->join($value[0], $value[1], $value[2]);
}
}
}
// return result
if ( ! $this->error ) {
$result = $this->db->get($this->table);
} else {
$result = FALSE;
}
return $result;
}
public function get( $query = NULL )
{
$result = $this->_get($query)->result();
return $result;
}
public function row( $query = NULL )
{
$result = $this->_get($query)->row();
return $result;
}
public function count( $query = NULL )
{
$result = $this->_get($query)->num_rows();
return $result;
}
/**
* Delete row by primary key
* #param int. Primary Key
* #return boolean. return true if row successfully delete
*/
public function delete( $primary_key = NULL )
{
// if primary key not set
if ( is_null($primary_key) ) {
$this->error = TRUE;
throw new Exception("First parameter cannot be empty.");
}
// if nothing error
if ( ! $this->error ) {
$this->db
->where($this->primary_key, $primary_key)
->delete($this->table);
} else {
return FALSE;
}
}
/**
* Update row by primary key
* #param array. Custom data
* #param int. Primary Key
* #return boolen. return true if row successfully update
*/
public function update( $data, $primary_key )
{
// if first argument not set or not an array
if ( func_num_args() == 0 ) {
$this->error = TRUE;
throw new Exception("First parameter cannot be empty");
} else {
if ( ! is_array($data) ) {
$this->error = TRUE;
throw new Exception("First parameter must be an array");
}
}
// if second parameter not set
if ( func_num_args() == 0 ) {
$this->error = TRUE;
throw new Exception("First parameter cannot be empty");
}
// if nothing error
if ( ! $this->error ) {
$this->db
->set($data)
->where($this->primary_key, $primary_key)
->update($this->table);
} else {
return FALSE;
}
}
}
/* End of file MY_Model.php */
/* Location: ./application/models/MY_Model.php */
The controller receives the value from the textbox smoothly with no problem. However, I got the mentioned error above. What else should I check?

Answer 1

You have to ensure that you are loading the model which you can do in the your controllers constructor or in the method itself that is using it, by using $this->load->model('m_login');
And refer to it as ...
public function CheckPassword()
{
$output = $this->m_Login->get_login($this->input->post('InputUsername'),$this->input->post('InputPassword'));
print_r($output);
// More code here
}
See how that flies for you!