Clear Cart before adding a product

Hi,

That plugin doesn't add the product to the cart.
It only changes the price of a product in the cart based on a custom item field value attached to that product.

The add to cart process is done, I suppose, by a redirect of your custom component to the add to cart URL of the product with the custom item field value, or with custom code in the custom component which directly adds the product to the cart and then redirects to the checkout. In both cases, the best is to add some code before all that in the custom component to clear the cart. It can be done easily with such code once HikaShop's helper is loaded:

		$cartClass = hikashop_get('class.cart');
		$cart_id = $cartClass->getCurrentCartId();
		if(!empty($cart_id))
			$cartClass->delete($cart_id);

Hi,

Yes, that's what I was saying in my previous message
You can do it like that:

if(!defined('DS'))
			define('DS', DIRECTORY_SEPARATOR);
		if(!include_once(rtrim(JPATH_ADMINISTRATOR,DS).DS.'components'.DS.'com_hikashop'.DS.'helpers'.DS.'helper.php'))
			return true;

Hi,

I doubt you have the same problem as the problem was linked to some customization.
Could you provide a link to the shop with the issue and instructions to reproduce your issue so that I can have a look at the situation and understand what's going on ?

Hi,

So I checked your page. From what I understand, you've configured your shop, probably with a limit, so that the customer cannot add several products of that page in the same cart.
After I add a product to the cart on your website, I'm getting automatically redirected to the checkout, without any notification box.
Normally in HikaShop you have a blue notification box which tells you that the product was successuflly add to the cart, or a red one which tells you that there is a problem.
The fact that you don't get it probably indicates that you've disabled the HikaShop cart notification plugin via the joomla plugins manager.
That's unfortunate because this leads to the system not displaying the error message when you add the second product to the cart.
If I manually access the add to cart URL of the second product, I get this:
i.imgur.com/rSt86K4.png
which tells me about the limit you must have configured.
So I would recommend to enable back this plugin. If you want HikaShop to redirect to the checkout after the add to cart, you can do it with that plugin activated, you just need to configure it accordingly. It will have the benefit of displaying an error message when there is a problem instead of directing you to the checkout without any indication of what's going on.

And regarding the limitation I can recommend several solutions:
- one would be to do like rodfarrell and develop a custom plugin to clear the cart before the add to cart process. Possible but it requires a developer to work on that for you.
- another would be to remove the limit, and add it instead as a shipping/payment method maximum quantity restriction. That way, the user would be able to add several products to the cart without problem, but he would be blocked on the checkout with an error message that can be customized to tell them that they have to remove from the cart some of the products to proceed. And you can configure the checkout workflow to display the cart view at this place so that they can easily do that.
- another solution would be to leave the limit like this, enable to cart notification plugin to get the error message when adding a second product and stay on the current page, and configure the HikaShop cart module, via the joomla plugins manager to display on that products listing so that the user can easily remove the product already in the cart.