Invalid argument is supplied for foreach() CakePHP - cakephp

Question

So I have followed this example to an absolute tee: http://www.startutorial.com/articles/view/build-a-shopping-cart-with-cakephp-and-jquery-part-2
But yet it gives me an error:
Warning (2): Invalid argument supplied for foreach() [APP\Model\Cart.php, line 38]
Which relates to:
public function getCount() {
$allProducts = $this->read();
if (count($allProducts)<1) {
return 0;
}
$count = 0;
foreach ($allProducts as $product) {
debug($product);
$count=$count+$product;
}
return $count;
}
What makes it even more infuriating is that in the first place it was working properly. Then something happened, I do not know what. It now refuses to work. My database is correct, everything is correct.
I just don't understand I have been stuck on this for so hours upon hours
And also, it must be related, whenever I try to access my shopping car(CartsController)t it gives me:
Error: syntax error, unexpected 'class' (T_CLASS)
Here is a picture of everything, that line of errors abovwe is when i click on add to cart. And when I click on shopping cart, it gets me the snytax error about unexpected class
Cart.php
<?php
App::uses('AppModel', 'Model');
App::uses('CakeSession', 'Model/Datasource');
class Cart extends AppModel {
public $useTable = false;
/*
* add a product to cart
*/
public function add($productId) {
$allProducts = $this->read();
if (null!=$allProducts) {
if (array_key_exists($productId, $allProducts)) {
$allProducts[$productId]++;
} else {
$allProducts[$productId] = 1;
}
} else {
$allProducts[$productId] = 1;
}
$this->save($allProducts);
}
/*
* get total count of products
*/
public function getCount() {
$allProducts = $this->find('all');
if (count($allProducts)<1) {
return 0;
}
$count = 0;
foreach ($allProducts as $product) {
$count=$count+$product;
}
return $count;
}
/*
* save data to session
*/
public function save($data) {
return CakeSession::write('cart',$data);
}
/*
* read cart data from session
*/
public function read() {
return CakeSession::read('cart');
}
}

Answer 1

You seem to be mixing up model methods. The read() method is meant to read a single row from your data model (usually a database table) as it requires an id, either by setting it to the model:
$this->id = 2;
$this->read();
Or by setting it as second argument:
$this->read(null, 2);
But, by the look of it, you're trying to fetch a count of all your products, which can be obtained much simpler with the find('count') method. Your model method can be as skinny as this:
public function getCount() {
return $this->find('count');
}
Should give you the desired results.