How to know if a model is already loaded?

[eluser]Unknown[/eluser]
Hi everyone!

I'm so sorry but I don't found anywhere what I'm looking for to solve my problem (..and sorry for my English.. I'm italian )

...that's my problem:
in the constructor of the controller I load a model that I use in the head of the index function:

Code:

function index() {
if ( $this->login_model->_is_logged() ) {
  //show logged in page
}
else {
  //show login form
}
}

and it works perfectly... if I don't reload the page shown

The "_is_logged()" function checks session and cookies, but these contain a encrypted part of the data passed via form.

When I refresh the "logged in" page, without resending data, it goes back, obviously, at the login form, because it reloads the model again and the saved datas are lost.


How can I know if a model is already loaded or not?


Thanks guys


edit: oh.. I've seen this is not the correct section for my question ..excuse me..