code igniter question: problem with passing variable to a view - php

Question

I am a newbie with CodeIgniter (2.03), and I have the following problem:
Here is my main template (view):
<?php $this->load->view('backOffice/bo_header_in'); ?>
<?php $this->load->view($bo_main_content); ?>
<?php $this->load->view('backOffice/bo_footer_in'); ?>
Here is my model:
<?php
class Back_office_users extends CI_Model
{
public function getAllUsers ()
{
$query = $this->db->query("SELECT * FROM users");
if ($query->num_rows() > 0) {
foreach ($query->result() as $rows) {
$users[] = $rows;
}
return $users;
}
}
}
And here is my controler:
<?php
class Dashboard extends CI_Controller
{
public function __construct()
{
parent::__construct();
$this->is_logged_in();
}
public function index ()
{
$this->load->model('back_office_users');
$users['rows'] = $this->back_office_users->getAllUsers();
$data['bo_main_content'] = "backOffice/dashboard";
$this->load->view('backOffice/bo_template_in', $data, $users);
// if I pass the variable like this it works just fine...
//$this->load->view('backOffice/users', $users);
}
public function is_logged_in()
{
$is_logged_in = $this->session->userdata('is_logged_in');
if (!isset($is_logged_in) || ($is_logged_in != true)) {
$this->accessdenied();
}
}
public function accessdenied ()
{
$data['bo_main_content'] = 'backOffice/accessdenied';
$this->load->view('backOffice/bo_template', $data);
}
public function logout ()
{
$this->session->sess_destroy();
redirect('backOffice/index');
}
}
And the dashboard view is like this:
<?php
print_r($users);
?>
I am getting the following error:
A PHP Error was encountered
Severity: Notice
Message: Undefined variable: users
Filename: backOffice/dashboard.php
Line Number: 9
Can anyone shed some light how can I resolve this? I create another view without use of the template, and it print the array.

Answer 1

You're not passing the $users variable to the second (nested) view.
I'd suggest adding $users to the $data array, and then in the first view pass the $users array to the embedded view. So, in your controller:
public function index () {
/* stuff... */
$data['users']['rows'] = $this->back_office_users->getAllUsers();
$data['bo_main_content'] = "backOffice/dashboard";
/* stuff... */
$this->load->view('backOffice/bo_template_in', $data);
}
Then in the main view:
<?php $this->load->view($bo_main_content, $users); ?>
Then in the dashboard view:
<?php
print_r($rows);
?>
This is because in the main view, as you know, CodeIgniter transforms all elements of $data in to variables, so we'll end up with the $users variables. $users is an array containing rows, so when we pass $users to the second view, the second view transforms all elements of $users in to view variables, hence we now have access to $row.