Question

Using CI 2.1.1 and the native Cart library

If I insert an item (with same product id, same options) more than once, it replaces instead of increasing the qty.

Could this be a bug, am I missing something, or what would be the best way to add this functionality myself?

Answer 1

So this was my solution, a change to System/libraries/Cart.php on line no. 233 to 244

There may be better ways to do this but it does the trick. I don’t understand why the functionality isn’t there already

    // EDIT:    added check if idential rowid/item already in cart, then just increase qty
    //          without this addition, it would not increase qty but simply replace the item
    if (array_key_exists($rowid, $this->_cart_contents)) 
    {  
       $this->_cart_contents[$rowid]['qty'] += $items['qty'];    
    } 
    else 
    {
        // let's unset this first, just to make sure our index contains only the data from this submission
        unset($this->_cart_contents[$rowid]);     

        // Create a new index with our new row ID
        $this->_cart_contents[$rowid]['rowid'] = $rowid;

        // And add the new items to the cart array
        foreach ($items as $key => $val)
        {
            $this->_cart_contents[$rowid][$key] = $val;
        }                       
    }