passing data in model trough controller in codeigniter - codeigniter

Question

I've heard about codeigniter couple of times so i was curious and thought why not. I took some tutorials and was very delighted to see how the framework worked.
Now i've the following problem i want to passing the data i've made in my model trough my controller and showing this in my view but i always run to the folowing error: Fatal error: Call to a member function query() on a non-object in C:\wamp\www\codeigniterTest\application\models\leden_model.php on line 9. The funny thing about this error is, when i google on this issue a lot of forum topics is about this issue but nowhere i get the right answer. my code looks like this.
codegniter version 2.03
class Leden extends CI_Controller {
function __construct(){
parent::__construct();
}
function index()
{
$this->load->model('leden_model');
$ledenModel = new Leden_model();
$data = $ledenModel->allLeden();
$this->load->view('leden_overzicht',$data);
}
}
<?php
class Leden_model extends CI_Model {
function __construct(){
parent::__construct();
}
function allLeden(){
$query = $this->db->query("SELECT * FROM leden");
foreach ($query->result_array() as $row)
{
echo $row['Naam'];
echo $row['Achternaam'];
echo $row['Email'];
}
return $query;
}
}
?>
When i'm doing the query in my controller then i'm getting the results i want, why not in my model?
my question is what am i doing wrong?

Answer 1

Leden_model.php
?php
class Leden_model extends CI_Model {
function __construct(){
parent::__construct();
}
function allLeden()
{
$data = array();
$this->db->select();
$query = $this->db->get('leden');
if ($query->num_rows() > 0)
{
foreach ($query->result_array() as $row)
{
$data[] = $row;
}
}
$query->free_result();
return $data;
}
Leden_controller.php
?php
class Leden extends CI_Controller {
function __construct()
{
parent::__construct();
$this->load->model('leden_model');
}
function index() {
$data['leden_data'] = $this->ledenModel->allLeden();
$this->load->view('leden_overzicht',$data); }
}
leden_overzicht.php
?php
if (count($leden_data))
{
foreach ($leden_data as $key => $list)
{
echo $list['Naam'] . " " . $list['Achternaam'] . " " . $list['Email'] . "";
} }
else {
echo "No data."; }

Answer 2

did you load database? example:
$this->load->database();