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You're right, it's the product (entry) id that needs passing, my bad.

Can you var_dump($_REQUEST);die; just before the __trigger function is called in the load function of event.shopping_cart.php, and see if the id is in the output.

Sorry I've not understood what you are asking me to do. Do you mean to add 

var_dump($_REQUEST);die;

before the the __trigger function?

This is what my code would like if my interpretation is correct.

public function load()
        {
            if(isset($_REQUEST['cart-action']) && !empty($_REQUEST['cart-action'])){
                return $this->__trigger();
            }
        }

        var_dump($_REQUEST);die;

        protected function __trigger()
        {
            $xml = new XMLelement('shopping-cart');

            if($_GET['cart-action']){
                $action = $_GET['cart-action'];
            } else {
                list($action) = array_keys($_POST['cart-action']);
            }

            if(!method_exists($this, $action)) {
                $this->_error = true;
                $this->_msg = __('Unaccepted action');
            }

            if(!$this->_error) {
                $this->_s = &$_SESSION[__SYM_COOKIE_PREFIX_ . 'cart'];
                $this->$action();
            }

            $xml->setAttributeArray(array('action' => General::sanitize($action), 'result' => $this->_error == true ? 'error' : 'success'));
            $xml->appendChild(new XMLElement('msg', $this->_msg));
            return $xml;
        }

which would give me the following error

Parse error: syntax error, unexpected T_STRING, expecting T_FUNCTION in /Applications/XAMPP/xamppfiles/htdocs/amccandlish/extensions/shopping_cart/events/event.shopping_cart.php on line 92

    public function load()
    {
        if(isset($_REQUEST['cart-action']) && !empty($_REQUEST['cart-action'])){
            var_dump($_REQUEST);die;
            return $this->__trigger();
        }
    }

This is what it's giving me where 283 is the id of the product.

array(4) { ["symphony-page"]=> string(30) "categories/category/christmas/" ["id"]=> string(3) "283" ["cart-action"]=> array(1) { ["add"]=> string(13) "Add to Basket" } ["PHPSESSID"]=> string(32) "a69e50d76184a8268561476503872cf8" }

Ok, interesting.

Take the var_dump out and put inside the dataIsValid function after this line: $this->_id = $_REQUEST['id'];

Let's see if it is getting to this part.

Should the code look like this?

$this->_id = $_REQUEST['id'];
            dataIsValid;
            if($idOnly) return true;

Sorry. I misunderstood what you've asked me to do. Here is the result after putting the var_dump inside the dataIsValid function

array(4) { ["symphony-page"]=> string(30) "categories/category/christmas/" ["id"]=> string(3) "283" ["cart-action"]=> array(1) { ["add"]=> string(13) "Add to Basket" } ["PHPSESSID"]=> string(32) "a69e50d76184a8268561476503872cf8" }

So we now know that the entry ID is being correctly passed in to functions. The SQL generated with this ID should return another ID for the table.

Can you remove the var_dump now and under this line: $fieldID = Symphony::Database()->fetchVar('id', 0, $sql); add `var_dump($fieldID);die;

The result is NULL

Does your section have a price field i it? That's what the query is looking for

Yes it does.

I'm really sorry. I've noticed how silly I've been. I've created a text field called Price rather than include the special type field Price. It seems to work now. I'll check with the other functions, drop, update, calculate to see if they work as well.

Personally, I disagree with having the 'Price' field. It should not be hard coded to require the specific field-type.

It's an easy mistake to make dude, no worries.

Thank you for your time. I appreciate it a lot.

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