CodeIgniter - Undefined Property Error - php

Question

I am trying to access all the bands in my table and print them out in a list, but when I run it I get this error:
Severity: Notice
Message: Undefined property: CI_Loader::$model_bands
Filename: views/band_view.php
Line Number: 16
band_view.php:
<h3>List of Bands:</h3>
<?php
$bands = $this->model_bands->getAllBands();
echo $bands;
?>
model_bands.php:
function getAllBands() {
$query = $this->db->query('SELECT band_name FROM bands');
return $query->result();
}
Could someone pleease tell me why it is doing this?

Answer 1

Why do you need to do this, the correct way is to use the model methods inside a controller, then passing it to the view:
public function controller_name()
{
$data = array();
$this->load->model('Model_bands'); // load the model
$bands = $this->model_bands->getAllBands(); // use the method
$data['bands'] = $bands; // put it inside a parent array
$this->load->view('view_name', $data); // load the gathered data into the view
}
And then use $bands (loop) in the view.
<h3>List of Bands:</h3>
<?php foreach($bands as $band): ?>
<p><?php echo $band->band_name; ?></p><br/>
<?php endforeach; ?>

Answer 2

Did you load your model in the Controller?
$this->load->model("model_bands");

Answer 3

You need to change your code like
Controller
public function AllBrands()
{
$data = array();
$this->load->model('model_bands'); // load the model
$bands = $this->model_bands->getAllBands(); // use the method
$data['bands'] = $bands; // put it inside a parent array
$this->load->view('band_view', $data); // load the gathered data into the view
}
Then View
<h3>List of Bands:</h3>
<?php foreach($bands as $band){ ?>
<p><?php echo $band->band_name; ?></p><br/>
<?php } ?>
Your Model is ok
function getAllBands() {
$query = $this->db->query('SELECT band_name FROM bands');
return $query->result();
}

Answer 4

You forgot to load the model on your controller:
//controller
function __construct()
{
$this->load->model('model_bands'); // load the model
}
BTW, why are you calling the model directly from your view? Should it be:
//model
$bands = $this->model_bands->getAllBands();
$this->load->view('band_view', array('bands' => $bands));
//view
<h3>List of Bands:</h3>
<?php echo $bands;?>