检查OpenCart中是否为空

Question

Is there a global way to check in any .tpl file without making modifications to the controllers and views to see if the basket is empty. This does not always work:

$cartItems = $this->cart->countProducts();
if ($cartItems < 0) {
    print "Your cart is empty"
}

It appears that it works when logged in and sometimes as a guest?

Answer 1

Much better sollution is just to call

if ( ! $this->cart->hasProducts()) {
    print "Your cart is empty";
}

It is much quicker and refers directly to a product count within a cart.

The method $this->cart->countProducts() does not count the products within a cart, but calculates the total product pieces count within a cart. So it loads all the products in a cart and in a loop adds each product's quantity. Therefore it is slower - not much, You might even not register the difference - but yet it is a little slower (the more products in a cart the more slower it is because of the loop).