Smart architecture for controller / views (body / header / footer) in CodeIgniter 3

CodeIgniter 3 has a nice hidden gem that's great for this, see below code.

PHP Code:

public function getHeader()
{
    $data['header'] = $this->load->view('templates/javascript', '', TRUE)
            .$this->load->view('templates/css', '', TRUE)
            .$this->load->view('templates/title-description', $dataHeader, TRUE)
            .$this->load->view('templates/favicon', '', TRUE);

    // Loads it global to all views.
    $this->load->vars($data);
} 


Interesting, it's still not clear for me where the function should be placed.