codeigniter pass data to nested view - php

Question

I have done very much research on this topic but I cannot find how i can do this. I am trying to add data to the $data parameter in a view that is being called from the controller of another view. However, any data i add to the subview via the subcontroller cannot be accessed by the subview. However, when I try to pass data to the subview via the client view, it works just fine. Most of the fixes on SO seem to reference just calling the $key in $data['key'] rather than $data so that doesn't seem really relevant here...
I have two classes:
welcome.php - a page
welcomemenu.php - a set of controls intended to
be loaded into welcome.php
Here is my Client Controller (the page that it's on, welcome.php), which stores the return val from subview $welcomemenu in its own $data array...:
<?php
class Welcome extends CI_Controller {
function __construct() {
parent::__construct();
}
function index() {
//echo 'this is the Welcome index function';
$data['clienttestdata'] = 'data from welcome.php!';
$data['welcomemenu'] = $this->load->view('welcome/welcomemenu', $data, true);
$this->load->helper('url');
$this->load->view('templates/header');
$this->load->view('pages/welcome', $data);
$this->load->view('templates/footer');
}
}
And here is the client view ("welcome_view.php" - seems simple enough. The $welcomemenu var is where I put the returns from my component class...):
<section id="allWelcomeContent" class="mainBody">
<header id="mainPageHdr" class=mainPageHdr>
<!-- other stuff from my header -->
</header>
<!-- this is where i want to put the welcome menu... -->
<section id="mainWelcomeContent" class="mainContent">
<div>
<?php echo $welcomemenu;?>
</div>
</section>
</section>
And here is the Controller for my sub-component welcomemenu.php:
<?php
class Welcomemenu extends CI_Controller {
public function __construct() {
parent::__construct();
}
public function index() {
$data['menu_items'] = array('About', 'Portfolio', 'Resume', 'Fun', 'Blog');
$data['testdata'] = 'data from welcomemenu.php!';
$this->load->view('welcome/welcomemenu', $data);
}
}
And lastly: Here is the sub-view that is supposed to get data from its own controller, but cannot, even though it can take data from a calling client (i.e., the $clienttestdata shows up fine but $testdata doesn't)!
<section>
<!-- TODO: make this element repeatable so content can load from controller and/or model. -->
<div id="divMenuItems">
<?php echo $clienttestdata;?>
<?php echo $testdata;?>
</div>
</section>
Still i couldn't find any proper solution. if anyone then please give me

Answer 1

When you're including the welcomemenu partial in your Welcome/index method, you have to remember that the view does not go through its own controller. Instead, its contents are returned as a string and stored as a parameter. It gets all of its own parameters through the ones you send to it via $data:
$data['welcomemenu'] = $this->load->view('welcome/welcomemenu', $data, true);
This view will thus have access to everything in $data so far - nothing extra is added through the Welcomemenu controller. So, in the above case, it will have:
array
(
'clienttestdata' => 'data from welcome.php!'
)
If you add the parameters you need to $data (as $data['testdata']), your sub-view will have what it needs.