How to make a permanent item in an Opencart cart?

Question

opencart

Worth the plugin simple. I wanted to make an additional product in the cart, with the choice to add it to the order yes or no. Namely, for example, extended insurance or a guarantee with an amount, let's take, for example, 200 rubles. Is there any solution in this case?

Answer 1

In the Simple template, add something like:

<button onclick="cart.add(99)">Добавить расширенную страховку</button>

It is possible through the code or the HTML module.