Get image url from model good practice?

Ok so I used your idea and merged to create custom objects on another projects, here is the code and please tell me if is ok:


hooks.php

PHP Code:

$hook['pre_system'][] = array(
    'class' => 'AppAutoLoadObjects',
    'function' => 'initialize',
    'filename' => 'AppAutoLoadObjects.php',
    'filepath' => 'hooks'
); 


AppAutoLoadObjects.php

PHP Code:

class AppAutoLoadObjects
{

    public function initialize()
    {
        spl_autoload_register(array($this,'autoloadCoreObjects'));
    }

    public function autoloadCoreObjects($class)
    {
        $path = array(
            'objects/',
        );

        $class = explode('_', $class);
        foreach($path as $dir) {
            if (file_exists(APPPATH.$dir.$class[0]."_Object".'.php'))
                require_once(APPPATH.$dir.$class[0]."_Object".'.php');
        }
    }

} 


Proprietati_model.php

PHP Code:

   function select_by_limit($start, $limit) {
        $this->db->from($this->_table.' a');
        $this->db->join('zone b', "a.id_zona = b.id_zona", 'left');
        $this->db->join('tip_proprietate c', "a.id_tip_proprietate = c.id_tip_proprietate");
        $this->db->limit($limit, $start);
        $query = $this->db->get_compiled_select();
        $result = $this->db->query($query);
        return $result->custom_result_object('Proprietati_Object');
    } 


and Proprietati_Object.php

PHP Code:

class Proprietati_Object
{

    private $resolution;

    public function __construct(){

        $this->_ci = get_instance();
    }

    public function get_block_caracteristics(){
        if($this->nume_tip_proprietate == 'apartament')
            $this->_ci->load->view('blocks/apartament', array('proprietate' => $this));
        elseif($this->nume_tip_proprietate == 'teren')
            $this->_ci->load->view('blocks/teren', $this);
    }
} 


Is this ok?