OpenCart Community

Hello. Sorry if I ask the last time too many questions. If someone can help - I will be grateful.
I want to be when you click add to cart on the page caterogy.tpl (a href="<?php echo $products[$j]['add']; ?>">) - the goods are not added to the basket to the existing elements and do not add the quantity of the previously added item.

ie that the basket was always one (last added) goods.

it is possible?

So you always want 1 item only for each item?

1. EDIT: system/library/cart.php

2. FIND: 3. REPLACE WITH:

Thank you for trying to help, unfortunately this is not what I need
I want to delete function that when you add a product to the cart and there is already another product, then the new product is added to the old.

Instead, I need to make an old product is replaced by a new one. In other words, the buyer could buy for 1 time only one product (but in any quantity)

Please write at least where the code. which adds an item to Cart. But I really would grateful if someone writes a ready solution

So you want ONLY 1 type of product in the cart at one time and if another is added it deletes the existing products and replaces with the new one?

1. EDIT: system/library/cart.php

2a. FIND (1.4.x): 2b. FIND (1.5.x): 3. BEFORE, ADD:

Yes! This is what I wanted! I did not think so simple, but without your help I would not do!
Qphoria, Thank you very much!

Q your first answer helped me a lot. thx!

Now, would it be possible to have this function (only allow one item per product) for all products except products with certain Manufacturer ID's?

Qphoria, would you mind letting me know how to achieve this on Opencart 1.5.6? Would be much appreciated if you could, thanks.

I tried this in OpenCart 1.5.6 but it does not work
Can you please help us
Would be much appreciated
Thanks

Hi all , please help me , how can i used this on Opencart 2.3 ?