Architectural question

[eluser]MpaK69[/eluser]
[quote author="i_am_using_ci" date="1231795781"]I understand OOP and MVC logic,
pubic function __construct() {
if($this->session->userdata('logged_in') != true) {

redirect('admin/login_form');

}

}
[/quote]

show error

Code:

pubic function __construct() {
    if($this->session->userdata('logged_in') != true) {
        show_error('Access denied');
    }
}