how's models loaded should be in MVC pattern?

[eluser]metaltapimenye[/eluser]
soory for my english..

when i got latest version of CI (1.7.1), i realize there's something change with models load protocol even it might be happen long on older versions. when i do this in my model, some coding style meet its limitation..

Code:

//location:/application/models/one.php

//retrieve protocol:$this->one->get_something();

class one extends Model {
    function one()
    {
        parent::Model();
    #$this->load->model('two'); # if this line uncommented, everything works just fine
    }

    function get_something(){
        $this->load->model('two'); # <-- getting other models, will result 'two' object not identified. kind of bush in the throat uh?
    return $this->two->get_method_two(); #<-- generating error
    }
}

yes, & get_instance() stuff will make it work. but hey, it just models->models layer transaction, why should dig too deep?

for short term project it would not be a problem, but if we working a huge and long term project .. it might make some models wont work after upgrade, and yes, it could be a pain in the ass to fix it.

yesterday, i make some tryouts on CI 1.7.1
Controller:

Code:

class Blog extends Controller {

   function Blog(){
        parent::Controller();    
   }
   function index(){
        $this->load->view('view_page');
   }
}

View:

Code:

<!--html stuff-->
<?php
$this->load->model('blog_model','blog');

echo $this->blog->header();
echo $this->blog->content();
?>
<br>
&lt;?php    $this->load->view('other');
echo $this->blog->footer();

?&gt;

...

and work as a charm.

it would be a pleasure for an old cowboy like me to applying this coding style. But i reminded by the way loading model->model and i might pissed when i upgrade which is not allow me to do some stuff like this way.

in best practice, how's models loaded should be in MVC pattern?