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I'm trying to get the value of a text input Option and add it to the price. Price is for example $1. The customer input 5 on the text field. The price should now be $6. How can I accomplish this? Here's the code That I'm working on. https://stackoverflow.com/questions/18375713/add-value-of-option-text-input-to-price  

Update

I am beginner in opencart, realized adding two gift items to the cart, along with adding the first paid if (!$json) { $this->cart->add($this->request->post['product_id'], $quantity, $option, $recurring_id); $cart_contents = $this->cart->countProducts(); if ($cart_contents == 1) { $this->cart->add('656', '1'); $this->cart->add('657', '1'); } } Help to implement the removal of these two products along with the last paid from the cart. Here is my attempt (doesn't work) if (isset($this->request->post['key'])) { $this->cart->remove($this->request->post['key']); $cart_contents = $this->cart->countProducts(); if (isset($this->request->post['product_id'])) { if ($cart_contents == 3) { $this->cart->remove($this->request->post['product_id']); $this->cart->remove('656'); $this->cart->remove('657'); } }
 

for OC 2.x the file doesn't exist, kindly update

Hi! Will be adapted soon