Unable to connect model page from controller page in code igniter - codeigniter

Question

This is my database php page
$active_group = 'default';
$query_builder = TRUE;
$db['default'] = array(
'dsn' => '',
'hostname' => '192.168.1.200',
'username' => 'name',
'password' => 'password',
'database' => 'codeignter_tutorial',
'dbdriver' => 'mysqli',
'dbprefix' => '',
'pconnect' => FALSE,
'db_debug' => (ENVIRONMENT !== 'production'),
'cache_on' => FALSE,
'cachedir' => '',
'char_set' => 'utf8',
'dbcollat' => 'utf8_general_ci',
'swap_pre' => '',
'encrypt' => FALSE,
'compress' => FALSE,
'stricton' => FALSE,
'failover' => array(),
'save_queries' => TRUE
);
I am unable to load model page from the controller page.
This is the error am getting any help would be appreciated.
Fatal error: Call to undefined method CI_Loader::models() in /var/www/html/bcit-ci-CodeIgniter-3.1.11-0-gb73eb19/bcit-ci-CodeIgniter-b73eb19/application/controllers/Welcome.php on line 16
A PHP Error was encountered
Severity: Error
Message: Call to undefined method CI_Loader::models()
Filename: controllers/Welcome.php
Line Number: 16
Backtrace:
This is my controller page Welcome.php
<?php
defined('BASEPATH') OR exit('No direct script access allowed');
class Welcome extends CI_Controller {
public function index()
{
$this->load->view('dashboard');
}
public function __construct()
{
parent::__construct();
$this->load->helper(array("form","url"));
$this->load->models('models');
}
public function login()
{
$this->load->view('loginPage');
}
public function dashboard()
{
$data['name']=$this->input->post('name');
$data['age']=$this->input->post('age');
$this->models->dbdata($data);
}
}
?>
This is my model page called models.php
<?php
class models extends CI_model
{
public function dbdata($inserttodb)
{
$this->db->insert("registration",$inserttodb);
return $var->result_array();
}
}
?>

Answer 1

In model page model's 'm' should be capital
class **M**odels extends CI_model
in controll page
this->load->model('models');

Answer 2

This is how you load model from your controller:
public function __construct()
{
parent::__construct();
$this->load->model('models', 'your_model'); //use 'your_model' to reference your model
}
This is how you called your model:
$this->your_model->dbdata($data);
//'your_model' is from constructor, 'dbdata' is the name of your function in model
Then make sure the method accept the 'data':
public function dbdata($data)
{
//your code goes here
}