model and controller error CI - codeigniter

Question

In my codeigniter controller user and user model currently I am trying to get the users from my database and have them as a table format on the view page.
I am getting two errors on my model though. I am trying to use sql. Database is auto loaded.
Not to sure what done wrong
Error 1
A PHP Error was encountered
Severity: Notice
Message: Undefined property: CI_DB_mysqli_result::$rows
Filename: user/user_model.php
Line Number: 46
Error 2
A PHP Error was encountered
Severity: Warning
Message: Invalid argument supplied for foreach()
Filename: user/user.php
Line Number: 75
My User Model
<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed');
class User_model extends CI_Model {
public function getTotalUsers() {
$query = $this->db->query("SELECT COUNT(*) AS total FROM `" . $this->db->dbprefix . "user`");
return $query->row('total');
}
public function getUsers($data = array()) {
$sql = "SELECT * FROM `" . $this->db->dbprefix . "user`";
$sort_data = array(
'username',
'status',
'date_added'
);
if (isset($data['sort']) && in_array($data['sort'], $sort_data)) {
$sql .= " ORDER BY " . $data['sort'];
} else {
$sql .= " ORDER BY username";
}
if (isset($data['order']) && ($data['order'] == 'DESC')) {
$sql .= " DESC";
} else {
$sql .= " ASC";
}
if (isset($data['start']) || isset($data['limit'])) {
if ($data['start'] < 0) {
$data['start'] = 0;
}
if ($data['limit'] < 1) {
$data['limit'] = 20;
}
$sql .= " LIMIT " . (int)$data['start'] . "," . (int)$data['limit'];
}
$query = $this->db->query($sql);
return $query->rows; // Line 46
}
}
User Controller
<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed');
class User extends MX_Controller {
public function __construct() {
parent::__construct();
$this->load->library('users');
$this->load->library('config_functions');
$this->load->model('user/user_model');
$this->load->model('user/User_group_model');
$this->lang->load('user/user', 'english');
$this->lang->load('english', 'english');
}
protected function getList() {
if (null !==($this->input->get('sort'))) {
$sort = $this->input->get('sort');
} else {
$sort = 'username';
}
if (null !==($this->input->get('order'))) {
$order = $this->input->get('order');
} else {
$order = 'ASC';
}
if (null !==($this->input->get('page'))) {
$page = $this->input->get('page');
} else {
$page = 1;
}
$url = '';
if (null !==($this->input->get('sort'))) {
$url .= '&sort=' . $this->input->get('sort');
}
if (null !==($this->input->get('order'))) {
$url .= '&order=' . $this->input->get('order');
}
if (null !==($this->input->get('page'))) {
$url .= '&page=' . $this->input->get('page');
}
$data['users'] = array();
$filter_data = array(
'sort' => $sort,
'order' => $order,
'start' => ($page - 1) * $this->config_functions->get('config_limit_admin'),
'limit' => $this->config_functions->get('config_limit_admin')
);
$user_total = $this->user_model->getTotalUsers();
$results = $this->user_model->getUsers($filter_data);
foreach ($results as $result) { // Line 75
$data['users'][] = array(
'user_id' => $result['user_id'],
'username' => $result['username'],
'status' => ($result['status'] ? $this->lang->line('text_enabled') : $this->lang->line('text_disabled')),
'date_added' => date($this->lang->line('date_format_short'), strtotime($result['date_added']))
);
}
$this->load->view('template/user/user_list', $data);
}
}

Answer 1

You may try this:
Change
return $query->rows; // Line 46
To
return $query->result_array();
$query->result() gives object notation, and $query->result_array() gives a array notation.
If you have used $query->result(), your foreach would be like:
foreach ($results as $result) { // Line 75
$data['users'][] = array(
'user_id' => $result->user_id, //the object type
...
);
}

Answer 2

"$query->rows()" does not exist in codeigniter active record class.
you will need to use $query->result() or $query->result_array() instead